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Agasthyamalai Biosphere Reserve

An Article by Mohan Pai

Biodiversity

Agasthyamalai Biosphere Reserve

Abode of Sage Agasthya, one of the seven Rishis of the Hindu Mythology. Tamil language is considered as a boon from this sage.
 
The southernmost reaches of the Western Ghats, i.e. The Agasthyamalai Range extends from Mahendragiri near Kanyakumari in the extreme south to the Ariyankavu Pass near Shenkottai. The Agasthyamalai Range continues into Tamil Nadu, south of the Kerala border. This is the only part of the Western Ghats where some stretch of the western slopes are also in Tamil Nadu.Agasthyamalai Biosphere Reserve straddles the border of Kollam and Thiruvananthapuram Districts in Kerala and Tirunelveli and Kanyakumari Districts in Tamil Nadu, at the southern end of the Western Ghats. The Biosphere lies Between 8° 8′ to 9° 10′ North Latitude and 76° 52′ to 77° 34′ East Longitude. Central location is 8°39′N 77°13′E / 8.65, 77.217.It is composed of Neyyar, Peppara and Shendurney Wildlife Sanctuaries and their adjoining areas of Achencoil,Thenmala, Konni, Punalur, Thiruvananthapuram Divisions and Agasthyavanam Special Division in Kerala. Inclusion of adjoining areas of Kalakkad-Mundanthurai Tiger Reserve in Tamil Nadu has been approved. The reserve now covers parts of Tirunelveli and Kanyakumari Districts in Tamil Nadu and Thiruvananthapuram, Kollam and Pathanamthitta Districts in Kerala.The Reserve includes the Indian Ecoregions of South Western Ghats moist deciduous forests, South Western Ghats montane rain forests and Shola. It is the habitat for 2,000 varieties of medicinal plants, of which at least 50 are rare and endangered species. Rare animals include the tiger, Asian Elephant, and Nilgiri Tahr. Agastyamalai is also home to the Kanikaran, one of the oldest surviving ancient tribes in the world.
The total area of the Bio-sphere reserve is 3500.36 Sq. Km out of which 1828 Sq. Km. is in Kerala and 1672.36 Sq. Km. is in Tamil Nadu. The Bio-sphere Reserve now covers parts of Tirunelveli and Kanyakumari District in Tamil Nadu and Thiruvananthapuram, Kollam and Pathanamthitta District in Kerala.

The Biosphere reserve is split into three major zones viz. Core Zone, Buffer Zone and Transition Zone.
Kerala the break up for the above three zones are as follows:
Core Zone 352 Sq. Km
Buffer Zone 691 Sq. Km.
Transition Zone 1828 Sq. Km.
The sanctuaries covered are Neyyar, Peppara and Shenguruny sanctuaries.

In Tamil Nadu the break up for the above three zones are as follows:
Core Zone 691 Sq. Km
Buffer Zone 198.36 Sq. Km.
Transition Zone 1672.36 Sq. Km.
The sanctuaries covered are Kalakad Mundanthurai Tiger Reserve.

Thenmala Forests
This region, extending to nearly 3,500 sq. km., is considered the richest bio-geographic province in the Indian sub-continent. A sizable portion of the proposed biosphere reserve enjoys protected status at present. The biosphere concept recognises the need to involve the people subsisting on the resources of the region in the conservation efforts. The flow of funds under the programme targets the uplift of these people so that their dependence on the biological resources is brought to a sustainable level. The programme also lays stress on research and monitoring activities, documentation of the resources, environmental education and training and international interaction at a scientific level. The idea of setting up a biosphere reserve for this region was first mooted by Kerala in February, 1999. The Tamil Nadu Forest Department was all support for the suggestion and the two sides agreed to commission the Tropical Botanical Garden and Research Institute, Thiruvananthapuram, to prepare a detailed report on the proposal. The proposed biosphere reserve is a natural unit of mountain system at the southern end of the peninsula, cut off from the rest of the Western Ghats by a narrow pass known as the Aryankavu Pass or the Shencotta Pass. It has the largest tract of untouched rain forests in peninsular India. The core area falls within the protected areas of Neyyar, Peppara and Shenduruny wildlife sanctuaries of Kerala and Kalakkad-Mundanthurai Tiger Reserve of Tamil Nadu. It is fairly undisturbed and extends to nearly 1,000 sq. km. The buffer zone lies within the wildlife sanctuaries and the tiger reserve and occupies an area of approximately 1,500 sq. km. In both the States, diverse eco-development activities are currently in progress, especially on the fringe areas of the forest tracts where people depend on the forest resources for their living. The biosphere reserve also includes a transition zone, which covers an area of 1,000 sq. km. The Kerala portion of this zone is actually wedged between the northern Shenduruny sanctuary and the southern Neyyar and Peppara sanctuaries. In Tamil Nadu, the transition zone is situated, on the northern part, around Kuttalam where a lot of seasonal tourist activities are promoted. The proposed Agasthyamalai Biosphere Reserve is a pristine paleotropic region with a very high floral endemism and tremendously rich biodiversity, locked up in an area exhibiting an overall representation of the biota of the southern Western Ghats. The site represents the richest centre of endemic plants, abode of all vegetation types met within the peninsula, richest repository of medicinal plants, the southern-most haven of endangered animals including primates, amphibians, reptiles and fishes and a treasure house of wild relatives of domesticated crops.

Agasthya Malai (Agastyarkoodam) is a peak of 1868 m in the Western Ghats. This mountain falls in the Tirunelveli District and Kanyakumari District of Tamil Nadu and the Kollam and Thiruvananthapuram District of Kerala, south India.It is a pilgrim centre, where devotees come to worship sage Agasthyar. Agasthyar was a Dravidian sage, and is considered to be one of the seven Rishis (Saptarishi) of Hindu mythology. The Tamil language is considered to be a boon from Agasthyar. There is a full-sized statue of Agasthyar at the top of the peak and the devotees can render poojas themselves.

Europeans, particularly those from England, were the first to establish tea gardens around the base stations of Agasthyarkoodam at Brimore, Bonacaud and Ponmudi. It is the abode of rare flora and fauna and even wild animals. Shirodhara, one of the healing techniques of Ayurveda or ayurvedic medicine is a form of alternative medicine in use primarily in the Indian subcontinent.
 
Protected Areas
 
Kalkad-Mundanthurai Tiger reserve
Kalakkad-Mundanthurai Tiger Reserve (KMTR), situated in the Southern Western Ghats in Tirunelveli district, in the South Indian state of Tamil Nadu, is the second largest protected area in Tamil Nadu State. This reserve was created in 1988 by combining Kalakad Wildlife Sanctuary (251 kmē) and Mundanthurai Wildlife Sanctuary (567 kmē), both established in 1962. Notification of 77 kmē of parts of Veerapuli and Kilamalai Reserve Forests in adjacent Kanyakumari district, added to the reserve in April 1996, is pending. A 400 kmē (154.4 sq mi) core area of this reserve has been proposed as a National Park.
This Reserve is situated in the south Western Ghats of India about 45 km west of Tirunelveli town. It is bound by forests in west, north and south and by villages in the east. Agasthiarmalai (1681 mtrs) which falls within the core zone of the Reserve is the 3rd highest peak in South India. Part of Agasthyamalai hills in the core of the Reserve is considered one of the five centres of plant diversity and endemism in India (IUCN). The topography is undulating. This is the only area of Western Ghats which has longest raining period of about 8 months,and it is the only non-dipterocarp evergreen forest in the region. It is floristically very different from other sites.
The rich forests of the Reserve form the catchment area for 14 rivers and streams. Among them the Tambraparani, Ramanadi, Karayar, Servalar, Manimuthar, Pachayar, Kodaiyar, Kadnar, Kallar form the back-bone of the irrigation network and drinking water for people of Tirunelveli, Turicorin and part of Kanyakumari district. Sever major dams - Karaiyar, Lower Dam, Servalar, Manimuthar, Ramanadi, Kadnanadi and Kodaiyar - owe their existence to these rivers.
 
Neyyar Wildlife Sanctuary
Sprawling over an area of 128 sq km, the Neyyar Dam and Wildlife Sanctuary is one of the most frequented and beautiful wildlife sanctuaries of Kerala. Tucked away in the southeast region of the Western Ghats, this Kerala wildlife sanctuary has vegetation from tropical wet evergreen forests to grasslands. It was notified as a wildlife sanctuary in 1958. It is the catchment area for the Neyyar River, Mullayar and Kallar. The wooded forests and hills of the Neyyar Wildlife Sanctuary offer shelter to rich and diverse flora and fauna. The wildlife includes Elephants, Nilgiri Tahrs , Sambhars, Tigers, Gaur, Wild Boars, Jungle Cats, Indian Porcupines, Barking Dogs, Malabar Squirrels, Sloth Bears, Pythons, Cobras, Flying Snakes and many other mammals and reptiles.
Avifauna includes White-breasted Water Hen, King Fishers, Woodpeckers, Little Green Heron, Indian Cuckoos, Indian Hill Mynas, Mynas, Egrets, Little Cormorants, Gray Jungle Fowl, Darters and many more. There is also a Crocodile Farm, Lion Safari Park and Deer Farm.

The Neyyar Wildlife Sanctuary has varied vegetation from tropical evergreen forests to grasslands. Agasthyakoodam at 1890 meters above sea level is the highest elevation of this wildlife sanctuary.The sanctuary strectches from Neyyatinkara Taluk to the Mundanthurai Tiger Reserve in Tamil Nadu. It is the drainage basin of the Neyyar river and its tributaries — Mullayar and Kallar — which originate in Agasthyarkoodam, the second highest peak in Kerala. The nearest airport is at Thiruvananthapuram (32 km away) while the nearest railhead is also at Thiruvananthapuram.

Peppara Wildlife Sanctuary
Located at about 50 km northeast of Thiruvananthapuram, the capital city of Kerala, the Peppara Wildlife Sanctuary is one of the most beautiful wildlife sanctuaries of Kerala. Covering an area of over 53 sq km, the sanctuary is known for its verdant tropical forests and a wide variety of wildlife including birds. Known for its unique eco-diversity, the Peppara Wildlife Sanctuary was declared a sanctuary in 1983, in order to protect and preserve its rich and diverse flora and fauna. The Peppara Dam, a large water reservoir built on the Karamana River and covering an area over 5.82 sq km, is situated in the heart of the Peppara Wildlife Sanctuary. The sanctuary also houses 13 tribal settlements, which are known for their unique customs and traditions.The topography of Peppara chiefly comprises of highly undulating hills with elevations varying between 100 meters to 1,717 meters. There are three major forest belts in the sanctuary that include southern hilltop tropical evergreen forests found above elevation of 1,000 meters; West coast semi- evergreen forests found between elevation of 150 meters to 1,050 meters, Southern moist mixed deciduous forests occupying the lower slopes of the hills. The major wildlife in Peppara include Elephants, Indian Bison, Sambars, Barking Deer, Wild Boars, Tigers, Panthers, Wild Dogs, Lion-tailed Macaques, Nilgiri Langurs, Malabar Squirrels and Mouse Deer to name a few. Peppara Wildlife Sanctuary is also rich in its avifauna, especially water birds, including Darters, Little Cormorants, Pied King Fishers and Egrets. A variety of reptiles found here includes the King Cobras and Pythons. The Peppara Wildlife Sanctuary is also famous for its rich and diverse population of moths and butterflies.

The Following major forest types are recognised in the wildlife sanctuary.1 .Southern hilltop tropical evergreenThis type of forest is of stunted evergreen, found above 1000m elevation on the top of hills. They are exposed to heavy wind and less favourable soil and climatic conditions.

2 .West coast semi- evergreenA transitional zone between evergreen and moist deciduous, this type occurs mostly in hill slopes from 150 to 1050m. The riparian areas also contain them.3. Southern moist mixed deciduous forestsThis type of forest covers more than 60% of the tract along the lower slopes of hills.

Shendurney River

Shendurney Wildlife Sanctuary
The Sanctuary consists of catchment areas of tributaries of Kallada River upstream of the Parappar dam in Kerala. It extends over 100 square kilometres. The Sanctuary got its name from the majestic tree, Chenkurinji, which is mostly found in this area.
Besides, one of the major rivers that flows through the area is called Chenduruny (Chenthuruny). The river rises from the Alwarkurichi peak, the highest point in the Sanctuary (1550 metres), and much of its course is now covered by the reservoir.
You can visit the Sanctuary by boat from Thenmala. A battery powered van will take you to the boarding point from the information centre of Thenmala Ecotourism Project. Trekking is allowed in some parts of the buffer area.
This Sanctuary has animals such as the bonnet monkey, lion tailed monkey, Nilgiri langur, squirrels, Indian bison, sambar deer, barking deer, mouse deer, Indian elephant and wild boar. There are more than a hundred species of birds in the sanctuary. However, few could be seen during a boat trip.

ChenkurInji Tree

References: Wikipedia, Hindu Feature by Ignatius Pereira, Information & Public Relations Dept., Government of Kerala.

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Nilgiri Biosphere Reserve

Saturday, October 4, 2008

Nilgiri Biosphere Reserve

An Article by Mohan Pai



NILGIRI BIOSPHERE RESERVE


Biosphere Reserves in India

The concept of a biosphere reserve emerged from the "Man and Biosphere" programme sponsored by the UNESCO during the early seventies of the last century. Prior to this, conservation efforts had a tendency to focus on a few animals like the tiger, while ignoring the overall diversity of living organisms. They also did not successfully reconcile the need for development with conservation. The Biosphere Reserve is an attempt to rectify these lacunae and make conservation more meaningful given the socio-economic realities of the region.
"Biosphere Reserve" is an international designation term made by the UNESCO for representative parts of natural and cultural landscapes extending over large areas of terrestrial or coastal/marine ecosystems or a combination thereof.
The network includes significant examples of biomes throughout the world. The Biosphere Reserve finally aims at conserving and use of resources for the well-being of people locally, nationally and internationally. So far about 531 Biosphere Reserves have been established in about 105 countries.
In 1978, an advisory group of the Indian National "Man and Biosphere" programme identified 12 sites ranging from Nanda Devi in the Himalayas to the Gulf of Mannar in the Bay of Bengal, representing the diverse biogeographic provinces in the country. Of this the project proposal for the Nilgiri Biosphere Reserve was first prepared in 1980, but it took six years for the reserve to be officially established.

Biosphere reserves can spur efforts to mitigate and adapt to climate change as well as encourage increased use of renewable energy, according to a recent declaration adopted by a meeting backed by the UNESCO

The Indian government has established 14 Biosphere Reserves of India, (categories roughly corresponding to IUCN Category V Protected areas), which protect larger areas of natural habitat (than a National Park or Animal Sanctuary), and often include one or more National Parks and/or preserves, along buffer zones that are open to some economic uses. Protection is granted not only to the flora and fauna of the protected region, but also to the human communities who inhabit these regions, and their ways of life.Four of the fourteen biosphere reserves are a part of the World Network of Biosphere Reserves, based on the UNESCO Man and the Biosphere (MAB) Programme list: 0 Nilgiri Biosphere Reserve 0 Nanda Devi Biosphere Reserve 0 Sundarbans Biosphere Reserve 0 Gulf of Mannar Biosphere Reserve.

Nilgiri Biosphere Reserve

Covering an area of 5,500 sq. km in the states of Karnataka, Kerala and Tamil Nadu, the Nilgiri Biosphere reserve has been designed to encompass extremities of habitat.


From 100m above MSL in the Nilambur plains, it goes up the vertical slopes of New Amarambalam to the rugged heights of Mukurthi peak (2,554 m) and drops in the east to 250 m in the Coimbatore plains. The western slopes get over 5,000 mm of precipitation annually while the sheltered eastern valleys receive less than 500 mm. Corresponding to their altitudinal and climatic gradients, the natural vegetation changes from tropical wet evergreen forest along the western slopes to montane stunted Shola forest amidst the grassy down on the upper plateau and on the east, progressively drier deciduous forests ending in thorny scrub. This setting is home for a variety of animals - the Lion-tailed macaque in the evergreen forests, the Nilgiri tahr in the grassy downs, the black buck in the dry scrub and the tiger and the elephant throughout the region.
To the north, the Biosphere Reserve begins in the Nagarhole National Park of Karnataka and the adjoining Wayanad sanctuary of Kerala. The moist deciduous forests and teak plantations of Nagarhole harbours abundant population of gaur, spotted deer, sambar and wild pig which support a sizeable number of carnivores such as tiger and leopard. Nagarhole is perhaps the best place in south India for sighting these large cats. The forest cover along the Kabini river has been reduced due to the construction of an irrigation dam. It was along the banks of this river that elephants were regularly captured for nearly a century by the 'Khedda' method until 1971. Even today an evening ride on coracle along the riverbanks during the dry months may be rewarded with the sight of over a hundred elephants.

The Biosphere reserve is split into four major zones viz. Core Zone, Manipulation forestry Zone, Tourism Zone and Restoration Zone.

The break up for the above four zones is as follows:

Core Zone 1240.3 sq. km. (22.5%)

Manipulation Forestry Zone 3238.7 sq. km (58.6%)

Tourism Zone 335.0 sq. km. (6.1%)

Restoration Zone 706.4 sq. km. (12.8%)

South of the Kabini, the dry deciduous forests of the Bandipur National Park were declared as a Project Tiger area in 1973. Contiguous with Bandipur lie Madumalai sanctuary of Tamil Nadu and portion of the Wayanad sanctuary in Kerala. The natural vegetation of this tract is moist deciduous forest. The fauna is similar to that of Nagarhole with elephants in large numbers.

Mullu Kurmbas

East of Madumalai, the vegetation over the Sigur plateau and the Moyar river valley lying in the rain shadow of the Nilgiri massif, becomes drier. Thorny plants such as Acacia dominate. In addition to the fauna of the deciduous forests, striped hyena, jackal and four-horned antelope are seen here. The black buck has disappeared from the Sigur plateau but a viable population of 300 to 500 is still found in the Moyar valley. They can be easily seen in the evening along the foreshore of the Bhavani reservoir.The Moyar valley is the junction of two great hill chains of the peninsular India - The Eastern Ghats and the Western Ghats. A portion of Talamalai-Satyamangalam plateau has been included in the Nilgiri Biosphere Reserve as representative of the Eastern Ghats.
Over the eastern slopes of the Nilgiris, the forest cover extends southwards as a narrow belt into Balampatty and Siruvani hills. The Siruvani reservoir on the Kerala side provides water to Coimbatore city. A good stretch of evergreen vegetation covers the higher reaches of Siruvani hills. Adjoining these hills to the north-west, the Attappady valley is mostly under cultivation. The large tribal population here has been practising shifting cultivation for a long time. As a result, the forest covers over the surrounding hills have largely degraded. A well preserved stretch of evergreen forest with Dipterocarpus, Mesua and Palaquium is seen west of the Attappady Reserve, extending into the Silent Valley, New Amarambalam and through a narrow corridor into Nilambur. The endangered Lion-tailed macaque of the Silent Valley fame is highly adapted to such evergreen habitats. The controversy regarding the proposed dam across Kanthipuzha in the Silent Valley was laid to rest with the entire area being declared as a National Park in 1986. But the Government of Kerala has proposed Pathrakkadavu Hydro Electric Project in the Kunthi river, once again threatening the Silent Valley.

Perhaps the largest pristine evergreen forest in peninsular India is the New Amarambalam Reserve, which has escaped the axe simply because its steep terrain is inaccessible. This is home to Chalamekans, the only genuine hunter-gatherers in the peninsula. The upper Nilgiri plateau has been altered by human activities into one vast stretch of cultivated land and settlements around Udhagamandalam (Ooty).
Both slopes and valleys here grow tea, coffee, cinchona, fruits and vegetables such as potato. Extensive plantation of Blue gum (Eucalyptus), Wattle (Acacia) and Pine have also been raised. These have resulted in enormous loss of top soil. To tap the potential for generating hydro-electric power, a series of dams have been constructed across the Bhavani river and its tributaries.
A major portion of the upper plateau has been excluded from the Biospere Reserve. Only the western and the southern ridges, which retain some natural Shola and grass land vegetation along with monoculture plantations have been included. A sanctuary has been declared to protect the Nilgiri tahr.

Location

The reserve encompasses 5,520 kmē in the states of Karnataka (1527.4 kmē), Kerala (1455.4 kmē), and Tamil Nadu (2537.6 kmē). The Biosphere lies Between 11o 36′ to 12o 00′ N Latitude and 76o 00′ to 77o 15′ E Longitude. Central location: 11°30′00?N, 76°37′30?E

Protected Areas

Mudumalai WL Sanctuary and National Park (321.1 kmē), Wayanad Wildlife Sanctuary( 344kmē), Bandipur National Park(874kmē), Nagarhole National Park (643 kmē), Nugu WLS, Mukurthi National Park (78 kmē) and Silent Valley National Park (89.52kmē) are protected areas within this reserve. The Biosphere Reserve also includes zones of the Nilgiris open to forestry and tourism including: Nilgiris District (North (448.3 kmē) and Nilgiris District South (198.8 kmē)), Erode District (Sathyamangalam forest (745.9kmē) and Erode(49.3 kmē)) and Coimbatore District (696.2 kmē) in Tamil Nadu.The reserve extends from the tropical moist forests of the windward western slopes of the Ghats to the tropical dry forests on the leeward east slopes. Rainfall ranges from 500 mm to 7000 mm per year. The reserve encompasses three ecoregions, the South Western Ghats moist deciduous forests, South Western Ghats montane rain forests, and South Deccan Plateau dry deciduous forests. The habitat types include montane rain forest, semi-evergreen moist forest, thorn forest and scrub, montane grassland, and high-elevation Shola forests.

Fauna

Fauna includes over 100 species of mammals, 350 species of birds, 80 species of reptiles; about 39 species of fish, 31 amphibians, 60 species of reptiles 316 species of butterflies and innumerable invertebrates. Rare animals include the tiger and the Nilgiri Tahr.

Flora

The reserve has very rich plant diversity. Of 3300 species, 1232 are endemic.

Diversity of Forests

The Nilgiri Biosphere Reserve includes all the important forest types that are to be found in South India as well as some that are just peculiar to the belt such as Tropical Thorn Forest, Tropical Dry Deciduous Forests, Tropical Moist Deciduous Forests, Tropical Semi Evergreen Forests, Sub Tropical Broad Leaved Forests, Tropical Wet Evergreen Forests, Southern Montane Wet Temperate Forests, Southern Montane Wet Grasslands and Subtropical Hill Savannas.Forest Divisions The NBR is spread over a large area within three states and varied climatic zones. The forest divisions are as follows: Coimbatore Division, Nilgiri South Division, Erode Division, Satyamangalam Division, Nilambur Division,Mudumalai Sanctuary, Wyanad Division,Palghat Division Chamrajnagar Division,Project Tiger Bandipur Mysore Division, Hunsur Division.

Protected Areas

The large contiguous extent of forest has the highest density of protected areas in the entire nation for so small an area.

Forest Types

The forests of NBR are spread over a vast area and cover various ecotypes. The following pages explain the difference in forest types and its relevance to the culture and ecology of the Nilgiri Biosphere Reserve.The overall classification of the different forest types are as follows:

Evergreen, Semi Evergreen ,Moist Deciduous, Shola, Dry Deciduous Dry Scrub Woodland, Grasslands

Rhododendrons

Evergreen Forest

These forests form a major portion of the western part of the reserve and are characterized by giant trees, multilayered species variation and luxuriant vegetation. The giant lofty trees can go upto a height of 150 feet or more and are often supported by huge buttresses. These trees offer refuge to a multitude of life forms including mosses, ferns, epiphytes, orchids, birds and often small animals. The annual rainfall is more than 200 mm with a maximum of 4 -5 dry months, and the mean temperature higher than 150 C throughout the year. The soil is loamy laterite. The main NTFPs are wild nutmeg(Myristica spp.), cinnamom (Cinnamonum spp.), cane (Calamus spp.), Piper longum, honey and other herbs. These forest are located in Silent Valley, Attapadi Reserve Forest, New Amarambalam, Nilambur Special Division and small pockets of Coimbatore Division in Tamil Nadu.

Semi Evergreen

forests are moist and occur as a transition zone between the Evergreen Forests and the Moist Deciduous Forests. The trees are slightly lower in height as compared to Evergreen Forests. They are usually found in the lower or more accessible regions of the Evergreen Forests. Buttressed trees are quite common, lianas are also abundant. There are 2 possible transition zones for these forests - either the secondary forests moving towards the evergreen climax or they are the degraded forms of the Evergreen Forests. In some degraded areas around habitations, bamboo (Bambusa arundinacea) and sandalwood (Santanalis spp.) are also found. Lagerstroemia lanceolata is the predominant deciduous species. These forests are restricted to parts of Nilambur valley and even here they have been mostly converted to teak plantations. Wyanad plateau, the south western part of Nagarhole National Park, and western part of Mudumalai Wildlife Sanctuary also contain remnants of this type. Rainfall is around 3000-4000 mm with a dry season of 3-4 months. The soil is generally red lateritic loam. They are also classified as moist deciduous teak type. The undergrowth includes many evergreen shrubs and small trees. The trees reach a height of 25-30 m. Buttresses, lianas and dense undergrowth are common. Some species are common to the dry deciduous forest type also.

Shola Montane

Sholas are found intensively in the Nilgiri South Division and adjacent areas of Kerala in the upper reaches of Silent Valley, Attapadi and New Amarambalam. They are also highly concentrated in the Western catchment area, forming part of the Mukurthi National Park. They are accompanied by grasslands and are frequently the origin of most of the rivers of the zone. The trees are short to medium height (7-20 m), have small dense leaves and make a thick canopy. There is a thick concentration of mosses and ferns. They have a high water retention capacity. They are also classified as the Shola Montane forest type due to their slow growth, high susceptibility and confined geographical area - they are referred to as `Living Fossils’. The average rainfall is around 1000-1200 m with a maximum dry season of not more than one month.

Problems Areas

The Nilgiri Biosphere Reserve has been enduring human interference for a very long time through development projects such as hydroelectric power projects, agriculture, horticulture, etc., which have brought about substantial change in the ecology of the area. Many environmental problems are noticed in different parts of the Nilgiri Biosphere Reserve.

Intensive felling

The increase in influx of population from the surrounding areas has led to deforestation and consequent habitat destruction. Between 1990 ' 96 there has been a decrease in the dense forest area. 28.96 sq. km. of dense forests have become open forest and 22.67 sq. km. of dense forests have changed into non-forest areas. Intensive felling has led to multiple problems like destruction, depletion and degradation of the environmental and its natural resources. Indiscriminate clearing of forestst is destroying the habitat of the several species of animals and birds of the Nilgiris. Some of them like the Nilgiri wood pigeon, Nilgiri pipet and Nilgiri langur that are endemic to this region have hence become highly endangered. Animals like the elephant, tiger and leopard are moving closer to human settlements owing to the shrinking of forest areas.

Plantations (monoculture)

The Nilgiris, which support a variety of tree species, are threatened by monoculture. The sholas are being destroyed for plantations. Monoculture of eucalyptus, wattle, blue gum, cash crops like tea, coffee, cardamom and food crops like potato have degraded the soil quality along with excessive use of fertilizers. The tea bushes require frequent appli cation of fertilizer, which has made the soil porous. During heavy rain, these slopes are easily washed away resulting in a landslide

Grazing.

The sholas were used for grazing cattle. The livestock population inside the Nilgiri Biosphere Reserve is very low but the population in the periphery is very high. Destruction of the sholas has led to disappearance of perennial streams, causing soil erosion and micro climatic changes. Overgrazing has led to degradation of low and high level grasslands, which harbour a large number of endemic species.

Forest fires

Forest fires are more common in the sholas and dry deciduous forests. They are both accidental as well as deliberate. The annual fire set off during the summer months for a better pasture in the ensuing monsoon is another manmade threat to the biological diversity.

Development and construction activity

Due to developmental activities large areas of forests have been cleared in and around the Nilgiri Biosphere Reserve. More human habitation has resulted in largescale road laying that connects even remote forest areas to the nearest urban centre. Construction activities like road building have unleashed widespread landslides and slope destabilization. Construction of the Kabini reservoir has submerged the valley between Nagarhole and Bandipur.

Horticultural and agricultural practices

Extension of agriculture, and use of lands unsuited for agriculture have accelerated soil erosion. Human settlements on the uplands have destroyed the sholas. Soil erosion is severe in the east and southwest areas of the Nilgiris where the monsoons are heavy. In the Mysore plateau region, the extension of irrigation canals from reservoirs has led to a largescale shift in land practices.

Tourism

The Nilgiris are an important tourist centre in South India, and attract a large number of tourists. A large number of hotels, clubs, resorts, gardens and roads have emerged rapidly,degrading the natural vegetation. Extensive pollution and water scarcity are the result affecting the entire ecology Nilgiri Biosphere Reserve. The Ooty Lake has been ruined accumulating garbage and disposal of sewage into it.
Conservation and management of the Nilgiri Biosphere Reserve

Conservation and management of the Nilgiri Biosphere Reserve depends on the coordination between government agencies and the local people. For effective management, the Nilgiri Biosphere Reserve has been zonalised as

core zone (1240 sq.km)

buffer zone (4280 sq.km).

The buffer zone is further divided into manipulation zones like forestry, tourism and recreation zones. These zones are located in all the three states of Tamilnadu, Karnataka and Kerala into which the Nilgiri Biosphere Reserve extends. Most of the plantations are seen only in the manipulation zone.Being one of the hotspots of biodiversity, the Nilgiri Biosphere Reserve has some national parks and wildlife sanctuaries within its boundaries. Conservation of wildlife is the main objective of these national parks and wildlife sanctuaries. Some of these areas have been designated by the government as Project Tiger and Project Elephant areas.

People

The Biosphere has a large number of indigenous communities, most of them forest dwellers and hunter gatherers. These distinct ethnic groups have small populations and live in geographical concentrations. It forms home to several adivasi communities, including the only surviving hunter gatherers of the Indian Sub-continent - the Cholanaikans in the New Amarambalam area.

Toda dwelling

Apart from the Todas - a well known pastoral group in the upper Nilgiris, other groups include the Paniyas, Irulas, Kurumbas, Kuruchiyans, Mullukurumbas, Adiyans and Alyars. Its richness in terms of people is incomparable - history goes back a long way. Their unique cultural and social characteristics sets them apart.

Cholanaickens, Allar,Malayan, etc., are native to the reserve. Except for Cholanaickens who live exclusively on food gathering, hunting and fishing, all the other tribal groups are involved in their traditional occupation of agriculture.

Betta Kurumbas

The Betta Kurumbas live in northern parts of Gudalur, extending into the Mysore district in the north. These people live in large settlements of 60-80 households. Most have no land and depend on wage labour and NTFP collection for a large part of the year. With the rapid change to tea cultivation in Gudalur area, these adivasis have become daily wage workers. Many of them have found employment with the Forest Department as watchers and elephant mahouts. Some of them are skilled bamboo workers. Today, the Betta Kurumbas have access to government schemes and help from other agencies. During the season, they go into the forest to mainly collect shikakai (Acacia concinna), kodampuli (Garcinia gummigutta) and some medicinal plants. They are not good honey collectors and like the Irulas, cover a wide area and collect small volumes; the more specialized/skilled collection of herbs and honey is left for the Kattunaikans.

Todas

Though very few in number, approximately 1500 people, this community is well known for their distinct features and traditions. They are scattered over 40 settlements in the Nilgiris. They are pastoralists, breeding buffaloes for both custom and livelihood.

Toda Women

Their traditional huts, like igloos, are made of different products from the forest. Due to the nature of their activities, they traditionally commanded large stretches of land for grazing. These were mainly in the upper areas of the Nilgiris, with grasslands and shola vegetation. After the advent of the British and the introduction of exotic plantations of acacia and eucalyptus, their pastures are lost and many of their traditional landmarks become meaningless.

Malasars

The Malasars are found both in the district of Coimbatore and in the adjoining parts of Kerala. These people are a forest community, living on marginal cultivation (slash & burn), and collection of NTFPs. A large part of their diet also consists of wild yam. The Malasars live in low elevations and almost down to the plains. Some of the villages have good access and infrastructure facilities. Most of the younger generation is getting educated and some are working on regular jobs. A vast difference is found in the economic status of the adivasis in different settlements. Some of the Malasars practice settled agriculture, whereas most earn their livelihood through daily wage jobs.

Cholanaickens

The Cholanaickans live in the Karulai Forest Range of Nilambur in Kerala, forming part of the western NBR.

Cholanaickan Hut

They are the most primitive indigenous community, still in the pre-agricultural level of development. The people live in temporary shelters alongside rivers and shift to caves in the monsoons. Their lives are closely linked to the semi evergreen and moist deciduous forests around that area. They collect NTFPs and sell them to the Co-operative Society of Nilambur. They collect honey, black dammer, mosses, nutmeg, shikakai from the forest and take back rice, tobacco, salt, oil and other necessities from the Society. Now, they number approximately 426 and continue their lifestyle, though slowly being drawn into modern market economies. Very few development programmes address this community and since they are so few in number, they also marry into other communities, especially the Padinaickens.

Irulas

Anthropologists do not consider them original inhabitants of hills. They have moved up to the mountains either for wage labour or while doing slash and burn agriculture.

Irula Woman

Usually, the Irulas have very little link to the other adivasis in the region, except with the Kurumbas. They have a more plains-ward movement and associate with agricultural and trading communities in the adjacent plains around the hills. Hunting, food gathering and agriculture form a distinctive way of making a living, which they now carry out, mainly for commerce.

They usually go in groups into the forest and collect items for sale to traders. Till now, the hunting for small game and eating of roots from the forest is common. They collect honey from the Roch Bee from trees and from the combs of the smaller bee - Apis cerana. They have a more widespread foraging strategy, collecting more volume for trade by covering vast areas. They too have knowledge of various medicinal plants, which they use. However, they hold the Kurumbas in awe for their skill in sorcery and medicine.Jenu KurumbaLiving in the northern part of the reserve, they are named such due to their skill in honey collection - jenu means honey. These communities are concentrated in the Mysore and Kodagu districts in the Karnataka part of the NBR. Cultivable land has been given to these communities, though they are traditionally hunter-gatherers. Some of the people undertake seasonal agriculture or else depend on wage labour. They collect forest produce, mainly honey, during the season and travel sometimes across the forest to Kerala to sell it. They are socially organized into groups and sangams in different zones. There are approximately 40,000 Jenu Kurumbas in the NBR.

Mullu Kurumbas

The Mullu Kurumbas are concentrated in the Wyanad region, including parts of Gudalur. Known more for their hunting and bird catching traditions, they now practise agriculture in the vyals of Wyanad. The women engage in fishing traditionally. Today, most people are educated and hold jobs. They take advantage of government schemes and their special status. A lot of the culture is now borrowed from the Nayars of Kerala, though they have an animistic form of worship.

Nagarhole National Park

Nagarhole National Park, also known as ‘Rajiv Gandhi National Park,’ is located 94 km from Mysore. It is spread between Kodagu and Mysore districts. Located to the northwest of Bandipur National Park, Kabini reservoir separates the two. The exclusive hunting reserve of the former rulers of Mysore, the park has rich forest cover, small streams, valleys, and waterfalls. In 1975 its area stretched to 575 kmē.The place derives its name from Kannada, Naga meaning snake and hole referring to streams. Set up in 1955, it is one of the best-managed parks in the country, with the office of the Deputy Conservator of Forests situated in Hunsur, about 47 km away from Nagarhole. The climate is tropical; summer is hot and winter is pleasant.

Tiger

The park boasts a healthy tiger-predator ratio, and tiger, bison, and elephant are much more populous here than in Bandipur.The park is part of the Nilgiri Biosphere Reserve. The Western Ghats, Nilgiri Sub-Cluster (6,000+ kmē), including all of Nagarhole National Park, is under consideration by the UNESCO World Heritage Committee for selection as a World Heritage Site.


Map of Nagarhole Reserve

Terrain

With the backdrop of misty Brahmagiri hill ranges and it's thickly forested and gently undulating terrai, criss-crossed with many rivers and streams, Nagarhole is naturalists dreamland. Masal Betta (959 m) located on the south-west fringes of the park is the highest point, and Kabini River is the lowest point at 701 m above sea level. Mostly moist mixed deciduous forest in the southern parts, dry tropical forest towards the east, and Sub mountain hill valley swamp forest

Mammals:

Elephant, Jackal ,Tiger, Panther, Gaur, Muntjac, Sambar, Spotted deer, Mongoose, Civet cat, Hyena, Dhole, Wild Boar, Striped Hyena, Sloth Bear, Leopard Cat, Jungle Cat, Mongoose, Muntjac, Mouse Dear, Slender Loris, Malabar Giant Sqiurrel, Porcupine, Pangolin,Reptiles: Marsh Crocodile, King Cobra, Krait, Python, Viper, Tortoise, Monitor Lizard ,Toads etc.The main trees found are Rosewood, Teak, Sandalwood and Silver oak.

Bandipur National Park

Bandipur National Park is one of India’s best known sanctuaries, and is an important Project Tiger reserve. It is located in the Chamarajanagar district of southern Karnataka in south India, and is contiguous with the Mudumalai National Park in the neighbouring state of Tamil Nadu, the Wynad Wildlife Sanctuary in Kerala, and the Nagarhole National Park to the northwest. It is home to around seventy tigers and over three thousand Asian elephants (as per the 1997 census ), along with leopards, dholes, gaur and sloth bears. Bandipur is part of the Nilgiri Biosphere Reserve.The Western Ghats, Nilgiri Sub-Cluster (6,000+ kmē), including all of Bandipur National Park, is under consideration by the UNESCO World Heritage Committee for selection as a World Heritage Site.

History

A sanctuary of 90 kmē was created at this site in the Bandipur Reserve Forest in 1931.

Gaur

As it was realised that this was too small for effective wildlife conservation, leading to the instituting of the Venugopala Wildlife Park at this site, extending over 800 kmē. The Bandipur Tiger Reserve was constituted in 1973 by carving out 880 kmē from the Wildlife Park. Recognised under Project Tiger in 1973 this park has boasted constant rise in Tiger population. Also famous for Sandalwood trees and rare species of Flora.
The main species are:Tiger, Four horned Antelope, Gaur, Elephant, Panther, Sloth Bear, Crocodiles, Mouse deer, Python, Osprey,Birds: Grey Junglefowl, Pompadour Green Pigeon, Honey Buzzard, Red-headed Vulture, Grey-headed Fish Eagle, Brown Hawk Owl,

Chital herd

Bay Owl, Malabar Trogon, Nilgiri Flycatcher, Malabar Pied Hornbill, Little Spiderhunter, Plain Flowerpecker.Reptiles: King Cobra, Common Cobra, Python, Adder, Viper, Rat Snake, Water Snake, Marsh Crocodile, Lizard, Chameleon, Monitor Lizard, Frog, Tree frog, Toad and Tortoise.

Geography

Bandipur National Park’s altitude between 680-1454 metres and is situated south of the Kabini river at the foothills of the Western Ghats. The rivers of Kabini, Nagur and Moyar flow through the reserve.

Gopalswami Temple, Gopalswami Betta

Climate - Winter minimum 10, Summer maximum 28 degrees, Monsoon from June to September and best time to visit is open throughout the year but preferably in monsoon when wildlife is plenty and forest is green. Greenery is quite lean when viewed from road but gets thicker as we proceed into the forest.

Mudumalai National Park

The Mudumalai National Park lies on the northwestern side of the Nilgiri Hills (Blue Mountains), in Nilgiri District, about 80 km north-west of Coimbatore in the westernmost part of Tamil Nadu, on the interstate boundaries with Karnataka and Kerala states in South India.

Mudumalai forests


Conservation history

The park was created in 1940 to become the first wildlife sanctuary in southern India. Originally 60 square kilometres, the sanctuary was enlarged to 295 kmē in 1956 and subsequently to its present size of 321 kmē. The sanctuary is contiguous with Bandipur National Park (874 kmē), Wynad Wildlife Sanctuary (344 kmē), Sigur and Singara reserve forests. The park is part of the Nilgiri Biosphere Reserve. The Western Ghats, Nilgiri Sub-Cluster (6,000+ kmē), including all of Mudumalai National Park, is under consideration by the UNESCO World Heritage Committee for selection as a World Heritage Site.

Flora and fauna

There are three main types of forest: tropical moist deciduous, tropical dry deciduous and southern tropical thorn. In certain places mixed vegetation types are present. Tropical moist deciduous forest occurs in the western Benne Block, where rainfall is higher than in the other blocks.

Primates found include the Gray langur (Semnopithecus priam) and the Bonnet Macaque (Macaca radiata). There are as many as 37 Tigers (Panthera tigris) (E) in mudumalai forest area, whereas the Leopard (P. pardus) (T) is most often seen in the Kargudi area. Other carnivores include the Dhole (Cuon alpinus) (V), the Striped Hyena (Hyaena hyaena), the Golden Jackal (Canis aureus) and the Sloth Bear (Melursus ursinus) (I). The Asian Elephant (Elephas maximus) (E) population totals several hundred animals.

Elephant herd

Ungulates include the Gaur (Bos gaurus) (V), the Sambar Deer (Cervus unicolor), the Chital (Axis axis), Indian Muntjac (Muntiacus muntjak), the Indian Spotted Chevrotain (Moschiola meminna), and the Wild Boar (Sus scrofa). Rodents include the Indian Giant Squirrel (Ratufa indica maxima) and the Red Giant Flying Squirrel (Petaurista petaurista).Bird life is rich. Regional endemics include Malabar trogon Harpactes fasciatus and Malabar grey hornbill Tockus griseus. Predatory birds include crested hawk-eagle Spizaetus cirrhatus and crested serpent eagle Spilornis cheela. It also holds the isolated southern population of the Striped Tit-babbler Macronous gularis. Of the reptiles, monitor lizard Varanus bengalensis is the most regularly observed species.

The nearest airport is at Coimbatore (84km) and the closest railhead at Udhagamandalam (64km). However, in terms of travel practicality, the closest railhead is Mysore (90km),which sits on a major broad gauge line and is served by trains from across the country. The park is most conveniently accessible by road from Mysore on the Mysore-Ooty highway.Other Places to visit in this region Include:

The Elephant Feeding Camp - A place where you can interact with Elephants and also see how they are fed.

Museum - Near the Elephant feeding camp there is a museum where dead animals are preserved. These preserved animals once lived in the Mudumalai Jungle.

Moyar River - See how the Moyar river runs through the dense forest. Spotting animals while they come to drink water in the river is fun.

Elephant Safari and Van Safari Conducted by Tamilnadu forest department.

Kallatty falls - Located 30Km from Mudumalai forest department . A beautiful falls with breathtaking view.

Pykara Lake - Located 40 Km from Mudumalai Safari office. It is a clean and scenic lake between the hills. It is an isolated lake free from pollution and crowds. Boating is conducted here.

Mukurthi National Park

Mukurthi National Park is a 78.46 kmē protected area located in the south-eastern corner of the Nilgiris Plateau west of Ootacamund hill station in the northwest corner of Tamil Nadu state in the Western Ghats mountain range of South India. The park is a part of Nilgiri Biosphere Reserve, India’s first International Biosphere ReserveThe Western Ghats, Nilgiri Sub-Cluster (6,000+ kmē), including all of Mukurthi National Park, is under consideration by the UNESCO World Heritage Committee for selection as a World Heritage Site.The park is characterized by Montane grasslands and shrublands interspersed with sholas in a high altitude area of high rainfall, subfreezing temperatures and high winds. It is home to an array of endangered wildlife, including Royal Bengal Tiger and Asian Elephant, but its main mammal attraction is the Nilgiri Tahr. The park was previously known as Nilgiri Tahr National Park.

Mukurthi Peak

History

Native hill tribe communities including the Toda people have harvested firewood from the sholas and grazed their animals including the Hill Buffalo for centuries. Indiscriminate felling of the sholas started with the establishment of British settlements in Ootacamund, Coonoor and Wellington in the early 1800s. Beginning in 1841 authorities issued contracts to bidders to fell wood from specific sholas in a ‘timber conservancy program. In 1868 James Breeds, Commissioner of the Hills, wrote: “…unless conservancy is taken in hand and organized under some efficient system under the control of an experienced officer, the destruction of the sholas is but a question of time.”

Between 1840 and 1856 plantations of several non-native tree species were introduced to the area to satisfy the fuel-wood demand. These included 4 Wattle species (Black Wattle, Silver Wattle, Green Wattle and Blackwood), Eucalyptus, Cyprus, Indian Long leaf Pine and Thorny Gorse. Eucalyptus became the preferred plantation tree.Unlike the others, the wattles spread by root suckers to quickly cover large areas of native grasslands, including the Mukurthi Hills, and was declared a pest “useful for covering wastelands.” Some Black Wattle plantations were maintained for the leather industry, as their bark yielded tannin.Mukurthi was declared a Wildlife Sanctuary in 1986 and a National Park in 2001, in order to protect the Nilgiri Tahr.

Geography

Mukurthi National Park has an elongated crescent shape facing to the west between 11°10′ to 11°22′ N and 76°22′ to 76°35′ E.. It is bordered on the west by Nilambur South Forest Division in Kerala, to the northwest by Gudalur Forest Division, to the northeast, east and southeast by South Forest Division and to the south by Mannarghat Forest Division, Kerala. At its southwest tip the peaks of this park straddle the northeast corner of Silent Valley National Park of Kerala.On the Nilgiri Plateau, the Kundah range of the Nilgiri hills is a ridge on the south-western side of Mukurthi National Park bordering Kerala. The Tamil Nadu/Kerala border here is 39 km long. The park generally slopes towards the east and south receiving water from the Billithadahalla, Pykara and Kundah rivers, and the Upper Bhavani and Mukurthi reservoirs which flow through the park. Also several perennial streams originate in the park, most of which drain into the Bhavani Puzha.Mukurthi Peak elevation: 2554 m.(8,379 ft.) Park elevation varies from 1,500 m (4,921 ft) to 2,629 m (8,625 ft), with Kollaribetta 2,629 m (8,625 ft), Mukurthi 2,554 m (8,379 ft), and Nilgiri 2,476 m (8,123 ft) being the highest peaks. With elevations greater than the general level of the plateau, the range possesses some peaks close to the height of Doddabetta, just east of Ooty. Avalanche hill of this range has twin-peaks of the Kudikkadu (height: 2,590 metres (8,497 ft)) and the Kolaribetta. Derbetta (or Bear Hill) (height: 2,531 metres (8,304 ft)) and Kolibetta (height: 2,494 metres (8,182 ft)), south of the Ouchterlony valley, are a continuation of the Kundah range.

These 3 hills of the Wayanad district are generally low in relation to other heights of the district; but are distinguished in relation to the generally uniform level of this area. Important peaks in the southwest Sispara/Bangitipal part of the park are Sispara (height: 2,206 metres (7,238 ft)) Anginda(height: 2,383 metres (7,818 ft)), Nadugani (height: 0 metres (0 ft)) and Gulkal (height: 2,468 metres (8,097 ft)). The park has a harsh environment with annual rainfall varying from 2010 mm to 6330 mm (79'249 inches), night temperature usually below freezing in the winter and wind speeds ranging up to 120 km/h (75 mph).

Fauna

Several threatened mammal species live here including Nilgiri Tahr, Indian elephant, Bengal Tiger, Nilgiri Marten, Nilgiri langur and Bonhote’s Mouse. Mukurthi is near the northern end of the range of the Nilgiri Tahr. A 3 day census in March 2007 estimated 200 Tahrs in the park including 60 young ones sighted. There are also Leopard, Bonnet macaque, Sambar deer, Barking deer, Mouse Deer, Otter, Jungle cat, Small Indian Civet, Wild dog, Jackal, Black-naped Hare, Common Rat, Shrew, Malabar Spiny Dormouse and Soft-furred Rat.Avifauna consists mostly of hill birds including the threatened Laughing thrush, Whistling Thrush, Woodcock, Wood Pigeon, Black-and-orange Flycatcher, Nilgiri Flycatcher, Grey Headed Flycatcher Black Bulbul, White-eye, Nilgiri Pipit. The predatory Black-winged Kite, Kestrel and Black Eagle may be seen in the grasslands.The area is home to many species of reptiles such as the Geckos Dwarf Gecko spp. and Nilgiri Salea Salea horsfieldii, the snakes Horseshoe Pit Viper, Olivaceaous Keelback, Oligodon taeniolatus, Oligodon venustus, Bronze-headed Vine Snake and several Shieldtails of which Perrotet’s Shieldtail is most common. Some amphibians here are the Common Indian Toad (Duttaphrynus melanostictus), Bufo beddomii, Bufo microtympanum and many species of Tree Frogs including Micrixalus opisthorhodus and Rana limnocharisButterflies with Himalayan affinity like the Blue Admiral, Indian Red Admiral, Indian Fritillary, Indian Cabbage white and Hedge blues are seen here. Some streams had been stocked with exotic Rainbow Trout in the past.

Flora

The area is home to numerous endemic plants particularly of the scapigerous annual Impatiens plants. Alchemilla indica and Hedyotis verticillaris are found only within or on the fringes of this park. Rhododendrons, Rhododendron arboreum the national flower of Nepal or Rhododendron nilagiricum, are seen throughout the grasslands and very large specimens are conspicuous around many sholas. The natural habitats of the park have been much disturbed by previously easy motor vehicle access through four different entry points and extensive commercial planting and natural spreading of non-native eucalyptus and wattle (Acacia dealbata, Acacia mearnsii and other species). In addition there is one large, and several smaller hydro-electric impoundments in the area. The nearest airport is Coimbatore ' 140 km. The nearest Railway station is Udhagamandalam ' 45 km. The best seasons are February to May and September to November.

Wayanad Wildlife Sanctuary

Wynad Wildlife Sanctuary is located in in Wayanad district, Kerala, south India. It is on the way from Mysore to Sultan Battery. Wild animals such as Indian Bison, elephant, deer and tiger has been spotted. There are also quite a few wild birds in the sanctuary.Peacocks and Peafowl tend to be very common in the area.It is spread over 344 kmē and is about 16 km east of Sultan Battery, the nearest large town.The sanctuary is part of the Nilgiri Biosphere Reserve. The Western Ghats, Nilgiri Sub-Cluster (6,000+ kmē), including all of the sanctuary, is under consideration by the UNESCO World Heritage Committee for selection as a World Heritage Site.

Water hole at Muthanga

The flora of Wayanad are characteristic of the Western Ghats and the plantation crops grown in the cool climate. A major portion of the district is covered by coffee. Trees of the wild type like rose-wood, anjili (Artocarpus), mullumurikku (Erthrina), several species of caussia and many other non-descript varieties are still preserved here and there, to give shade to the coffee plants. These trees give a semblance of wilderness to the landscape of Wayanad. In a majority of coffee plantations, the age-old species are replaced by the silver-oak which is suited to the cold climate. This tree grows quickly and its cultivation is widespread among coffee plantations for shade and for giving support to pepper. It is used for the plywood industry and thus is economical to the farmers. Eucalyptus grandis, a shorter variety of eucalyptus, whose fragrant smell suffuses the very air around it, is cultivated on a large scale in centain parts of the district. Eucalyptus oil is extracted on commercial basis from its leaves. Of the 20,864 hectares of reserve forest, the major portion is teak plantation. Arecanut palms and jack trees are also grown here. Tea is grown as an industry in large estates. With the clearing of forests, the diverse and buzzling animal life, characteristic of the forests of Western Ghats, has vanished from Wayanad. One can still see the bonnet monkeys, loris, mongooses, jungle cats, squirrels, jackals, hares, etc. in the limited forest areas. Elephant, bear and other wild animals from the neighbouring wildlife sanctuaries of Karnataka and Tamil Nadu, stray into the Begur forest range and the forests around Muthanga, which is 20 kilometres away from the town of Sulthan Bathery.

Silent Valley National Park

Silent Valley National Park (Core zone: 89.52 square kilometres (35 sq mi)) is located in the Nilgiri Hills, Palakkad district, Kerala, in South India. The area under this national park was historically explored in 1847 by the botanist Robert Wight, and is associated with Hindu legend.The park is one of the last undisturbed tracts of South Western Ghats montane rain forests and tropical moist evergreen forest in India. Contiguous with the proposed Karimpuzha National Park (225 kmē) to the north and Mukurthi National Park (78.46 kmē) to the north-east, it is the core of the Nilgiri International Biosphere Reserve (1,455.4 kmē), and is part of The Western Ghats World Heritage Site, Nilgiri Sub-Cluster (6,000+ kmē) under consideration by UNESCO.Plans for a hydroelectric project that threatened the park’s high diversity of wildlife stimulated an environmentalist Social Movement in the 1970s called Save Silent Valley which resulted in cancellation of the project and creation of the park in 1980. The visitors’ centre for the park is at Sairandhri.

Lion-tailed macaque

There is a perceived absence of noisy Cicadas and hence the name ‘Silent Valley’. Another story attributes the name to the anglicisation of Sairandhri. A third story, refers to the presence there of many Lion-Tailed Macaques Macaca silenus. In 1914 the forest of the Silent Valley area was declared a Reserve Forest, however, from 1927 to 1976 portions of the Silent Valley forest area were subjected to forestry operations

Lion-tailed Macaque

Silent Valley is home to the largest population of Lion-tailed Macaque. Public controversy over their habitat led to establishment of Silent Valley National Park. In 1973 the valley became the focal point of “Save Silent Valley”, India’s fiercest environmental debate of the decade, when the Kerala State Electricity Board decided to implement the Silent Valley Hydro-Electric Project (SVHEP) centered on a dam across the Kunthipuzha River. The resulting reservoir would flood 8.3 kmē of virgin rainforest and threaten the endangered Lion-tailed macaque. In 1976 the Kerala State Electricity Board announced plans to begin dam construction and the issue was brought to public attention.In 1983 the Hon. Prime Minister of India decided to abandon the Project and on November 15 the Silent Valley forests were declared as a National Park. On September 7, 1985 the Silent Valley National Park was formally inaugurated. On September 1, 1986 Silent Valley National Park was designated as the core area of the Nilgiri Biosphere Reserve. Since then, a long-term conservation effort has been undertaken to preserve the Silent Valley ecosystem.

In 2001 a new hydro project was proposed and the “Man vs. Monkey debate” was revived. The proposed site of the dam (64.5 m high and 275 m long) is just 3.5 km downstream of the old dam site at Sairandhiri, 500 m outside the National Park boundary.

Geography

Silent Valley is rectangular, 7 km (east-west) X 12 km (north-south). Located between 11o03' to 11o13' N latitude and 76o21' to 76o35' E longitude it is separated from the eastern and northern high altitude plateaus of the (Nilgiris Mountains) by high continuous ridges including Sispara Peak (2,206 m) at the north end of the park. The park gradually slopes southward down to the Palakkad plains and to the west it is bounded by irregular ridges. The altitude of the park ranges from 658 m to 2328 m at Anginda Peak, but most of the park lies within the altitude range of 880 m to 1200 m. Soils are blackish and slightly acidic in evergreen forests where there is good accumulation of organic matter. The underlying rock in the area is granite with schists and gneiss, which give rise to the loamy laterite soils on slopes.

Attappady Tribal Chief

Tribes

There is no record the valley has ever been settled, but the Mudugar and Irula tribal people are indigenous to the area and do live in the adjacent valley of Attappady Reserved Forest. Also, the Kurumbar people occupy the highest range outside the park bordering on the Nilgiris.
FloraValley areas of the park are in a Tropical and subtropical moist broadleaf forests Ecoregion. Hilly areas above 1,000 m are in a South Western Ghats montane rain forests region. Above 1,500 m, the evergreen forests begin to give way to stunted forests, called sholas, interspersed with open grassland. Both are very important to naturalists, biologists and other researchers because the rich biodiversity here has never been disturbed by human settlements. Several threatened species are endemic here. New plant and animal species are often discovered here.

Birds

Birdlife International lists 16 bird species in Silent Valley as threatened or restricted: Nilgiri Wood-pigeon, Malabar Parakeet, Malabar Grey Hornbill, White-bellied Treepie, Grey-headed Bulbul, Broad-tailed Grassbird, Rufous Babbler, Wynaad Laughing Thrush, Nilgiri Laughing Thrush, White-bellied Shortwing, Black-and-rufous Flycatcher, Nilgiri Flycatcher, White-bellied Blue-flycatcher, Crimson-backed Sunbird and Nilgiri pipit.Rare bird species found here include Ceylon Frogmouth and Great Indian Hornbill. The 2006 winter bird survey discovered Long-legged Buzzard, a new species of raptor at Sispara, the park’s highest peak. The survey found 10 endangered species recorded in the IUCN Red List including the Red winged crested cuckoo, Malabar Pied Hornbill, Pale harrier. The area is home to 15 endemic species including the Black-and-orange Flycatcher. It recorded 138 species of birds including 17 species that were newly observed in the Silent Valley area. The most abundant bird was the Black bulbul.

Mammals

There are at least 34 species of mammals at Silent Valley including the threatened Lion-tailed Macaque, Niligiri Langur, Malabar Giant Squirrel, Nilgiri Tahr, Peshwa's Bat (Myotis peshwa) and Hairy-winged Bat. There are nine species of bats, rats and mice.The Silent Valley forest remains one of the most undisturbed viable habitats left for the endemic and endangered primates lion-tailed macaque and Nilgiri langur.The tiger, leopard (panther), leopard cat, jungle cat, fishing cat, Common Palm Civet, Small Indian Civet, Brown Palm Civet, Ruddy Mongoose, Stripe-necked Mongoose, Dhole, clawless otter, sloth bear, small Travancore flying squirrel, Indian pangolin (scaly anteater), porcupine, wild boar, sambar, spotted deer, barking deer, mouse deer and gaur also live here.

Posted in Nilgiris.

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A Primer of Ecology

Tuesday, October 21, 2008

A Primer of Ecology

Thursday, July 3, 2008

A Primer of Ecology
An article by Mohan Pai (From my book “The Western Ghats” published in 2005)


"There is nothing in nature to prove that it cares more for our human species than daffodils. We may one day vanish as quickly and as radically as thousands of other breeds before us. Mother nature has no mama's darlings…when the balance of nature is threatened, it always finds a way to restore that balance, at whatever cost. If endangered by us, nature will strike back and show no more concern for Michaelangelo, Shakespeare or Mozart than for daffodils. We are dealing here with an overwhelming force, that of life itself and we know next to nothing about it. The only thing we know is — nature has no favourite among species.
"Romain Grey - Vanishing Species”

How to destroy a fragile ecosystem

10 Easy Steps

Ecosystems such as the Western Ghats which have global significance, are classified as HOT SPOTS. Globally, about 18 hot spots have been identified. These spots are extremely rich in species, have high endemism, and are under constant threat. Hotspot areas are particularly rich in floral wealth and endemism, not only in flowering plants but also in reptiles, amphibians, swallow-tailed butterflies, and some mammals. These are extremely fragile biosystems and need to be nurtured and protected for the sake of the environmental well-being of the people. However, we are witnessing a mindless destruction of these systems.

The 10 EASY steps adopted for the destruction process are as follows:

1. Destroy as much as natural forest as possible by clear felling. Plant monoculture (teak, eucalyptus, acacia, etc.) in the name of afforestation.
2. Build dams for irrigation and power. In the process, destroy thousands and thousands hectares of natural forest. Allow the area to be submerged and displace the tribals and local populat ion. Promise resettlement - over the years keep promising - make trauma of displacement more painful. In the process, also kill a vast number of endemic species in the area, so that they are lost forever. Also decimate wild life of the area by submersion or fragmentation of their habitat. Blasting of rocks, the
rumble of machinery, the incursions by human help greatly in reducing the fauna in the Ghats.
3. Allow encroachment in the forest area and then legalise it through legislation.
4. Start large-scale mining operations within the forests. Apart from destroying the habitat complex of highly threatened flora and fauna, it will result in high degree of pollution of the rivers and land surrounding water course. The forests will be replaced with heaps of mined waste. It will also effectively kill and re duce the aquatic fauna. There will be a decline in agricultural productivity due to deposition of mine tailing.
5. Establish large-scale paper mills and plywood units by clearing large tracts of prime forest land and allow them a free hand with the forest timber.
6. Install an Atomic Power Plant right in the midst of the forest again by destroying an immense amount of prime forests. Ignore the hazards it entails for the area.7. Build Railways through the thick forest and cause as much damage as possible through clearing the prime forests and
tunnelling.
8. Clear large tracts of natural forests for cash crops like coffee, cardamom, tea, spices, etc.
9. Protect poachers and smugglers - offer them political patronage so that they can kill with impunity thousands of tuskers for Ivory and other endangered animals for their skins; smuggle out millions of tonnes of valuable timber.
10. Pass on this knowledge to your children so that whatever green patches may be left could be effectively eliminated in the end.

A Primer of Ecology

What is ECOLOGY ?All life on the earth is interrelated and interconnected in someway or the other. Living organisms are dependent upon their physical environment - the land, water, air.The study of the interrelationship between plants, animals, and the environment is called ECOLOGY.One of the fundamental aspects in ecology that helps us understand the interrelationship between plants and animals, animals and animals and plants, animals and human beings, is their requirement of food.Food chains & food-web.Green plants are the primary producers of food. They make simple carbohydrates during the process of photosynthesis, with the help of carbon dioxide and water by utilisation of the energy received from the Sun. When herbivore animals eat plants, they get energy through this food. When they are eaten by carnivore, the latter get the energy required for their life activities. For example: grass —> grass hopper —-> frog. This is a simple food chain. Now, if a frog is eaten by a snake, and the snake by an eagle, it becomes a complex food chain. Several such food chains exists in nature. An interconnected network of different food chain that occurs among inhabitants of a particular natural habitat is called food-web. The food-web is a delicate network of interrelationship between the species involved, representing a balanced and self-contained living system. Destruction of any one link in this food-web will have an adverse impact on the other or the entire system itself. For example if the carnivores like tigers and leopards are exterminated, the population of the deer will increase unchecked and this in turn would destroy the vegetation more rapidly, giving no time for plants to regenerate.

Interrelationships in nature take many forms - plants and vegetation provide home for animals; insects and birds pollinate flowers; animals help the dispersal of seeds of plants; parasites infest plants or animals. Some are beneficial associations between organisms (symbiosis) and others are not. There are also nature's cleanup crew - the crow, the eagle, the hyena, and others who act as scavengers and bacteria aiding in decomposing the dead which play an important role in returning organic and inorganic components of dead animals and plants back to nature, to be used and reused by subsequent living organisms.

Nature provides a very complex, yet balanced, interrelationship between plants and animals. Together with the biogeochemical cycles such as water cycle, carbon cycle, nitrogen cycle, mineral cycle, etc., recycling essential elements between living organisms and the environment; all life on the earth is interconnected. It is necessary to understand these ecological relationships to appreciate the importance of conservation of animals and plants and the non-living resources that nature has provided on our planet earth.

Biosphere & Biomes

Life on the earth may have begun to evolve some 3,500 million years ago. Today there are over half-a-million variety of plants and a million different kind of animals.

All life is confined to a thin layer of the earth called BIOSPHERE. The Biosphere of the earth can be divided into a number of BIOMES or natural habitats with specific climatic and geographical characteristics that help sustain a variety of plants and animals adapted to survive in a particular region.A biome is made up of biological communities that interact with each other in a particular life zone. A tropical rainforest, for example, is a biome which is the home for a wide variety of plants and animals suitably adapted to live in the habitat that constitutes the forest. The higher canopy of tree branches sustain arboreal animals, such as monkeys, flying squirrels and birds; the dense forest floor sustains tigers, deer, snakes, insects, millipedes, etc.The rainforest is characterised by warm and moist climate with plenty of rainfall. Similarly oceans, lakes, grasslands, wetlands,coniferous forests, deciduous forests, deserts and coastal regions constitute different biomes or self contained environments with typical plants and animals suitable to survive in these habitats.Thus nature provides an extremely complex and intricate network of living things delicately balanced and adapted to inhabit the diverse climatic and geographical regions on our planet. This is our natural heritage; a heritage in which we ourselves are one of the many species of animals, depending upon the entire system for our sustenance and survival.

What is biodiversity ?

The term Biodiversity encompasses the variety of all life on the earth. It is identified as the variability among living organisms and the ecological complexes which they are part, including diversity within and between species and ecosystems. Biodiversity manifests at three levels:
a) Species diversity which refers to the numbers and kinds of living organisms.
b) Genetic diversity which refers to genetic variation within a population of species.
c) Ecosystem diversity which is the variety of habitats, biological communities and ecological processes that occur in the biosphere.Biological diversity affects us all. It has direct consumptive value in food, agriculture, medicine, industry. It also has aesthetic and recreational value. Biodiversity maintains ecological balance and continues evolutionary process. The indirect ecosystem services provided through biodiversity are photosynthesis, pollination, chemical cycling, nutrient cycling, soil maintenance, climate regulation, air, water system management, waste treatment and pest control.Biodiversity is not evenly distributed among the world's more than 170 countries. A very small number of countries lying wholly or partly within the tropics, contain a high percentage of the world's species. These countries are known as Megabiodiversity countries. Twelve countries have been identified as megabiodiversity countries: India, Brazil, Colombia, Ecuador, Peru, Mexico, Madagascar, Zaire, Australia, China, Indonesia and Malaysia. Together these countries contain as much as 60 to 70 per cent of the world's species. India is one of the 12 megabiodiversity centres in the world.India is divided into 10 biogeographic regions:Trans-Himalayan, Himalayan, Indian desert, Semi-arid zone, Western Ghats, Deccan Peninsula, Gangetic Plains, North-East India, Islands and Coasts.

Ecosystems

An ecosystem is a place where nature has created a unique mixture of air, water, soil and a variety of living organisms to interact and support each other. It is a living community of plants and animals of any area together with the non-living components of the environment such as soil air and water. The living and non-living interact with each other in such a manner that it results in the flow of energy between them. In a particular ecosystem the biotic community consists of the birds, reptiles, mammals, insects and other invertebrates, bacteria, plants and other living organisms.An ecosystem includes not only the species inhabiting an area but also features of the physical environment. Energy cannot be produced without the consumption of matter; the pyramid of life therefore has a wide base of vegetation, the smaller herbivores that feed on plants, and a much smaller number of carnivores. Eco-system ecologists are interested in the exchange of energy, gases, water and minerals amongst the biotic (living) and the abiotic (non-living) components of a particular system; therefore they tend to study confined areas that are easier to control or monitor. Small and relatively self-contained ecosystems are called microsystems because they represent miniature systems in which most of the ecological processes characteristic of larger ecosystems operate but on a smaller scale. A small pond is an example of a little ecosystem. On the other hand, the largest and the only really complete ecosystem is the biosphere. An ecosystem can exist in any place where there are varied forms of life. Even the park near your home or a village pond can be an ecosystem as there are different forms of life here and they coexist.
One of the most productive ecosystems is at the point where sea water meets freshwater.Conservationists have now realised that in order to save the natural world, ecosystems as a whole have to be saved. Unless the entire ecosystem is preserved, the individual species will not be able to survive for long.Human activities clearly demonstrate the interdependence of all ecosystems - acid rain that falls on forests is carried to pristine lakes far from the source of pollution.

Deforestation and the burning of fossil fuels change the composition of the atmosphere and perhaps contributes to the alteration of the earth's climate. The most important lesson to be learned about life on earth is that most things on the earth are interdependent and interconnected - actions taken have a much larger impact than one can think of.

Genetic Biodiversity

All forms of life on earth, whether microbes, plants, or human beings, contain genes. Genetic diversity is the sum of genetic information contained in the genes of individual plants, animals and micro-organisms. Each species is the storehouse of an immense amount of genetic information in the form of traits, characteristics, etc. The number of genes ranges from about 1000 in bacteria to more than 400,000 in many flowering plants, each species consists of many organisms and virtually no two members of the same species are genetically identical.An important conservation consequence of this is that even if an endangered species is saved from extinction it has probably lost some of its internal diversity. Consequently when populations expand again, they become more genetically uniform than their ancestors. There are mathematical formulas to express a genetically effective population size that explain the genetic effects on populations that have gone through a bottleneck before expanding again such as the African Cheetah or the North American Bison.Subsequent inbreeding in small populations may result in A) reduced fertility and B) increased susceptibility to disease. Genetic differentiation within species occurs as a result of sexual reproduction, in which genetic differences between individuals are combined in their offspring to produce new combinations of genes or from mutations causing changes in the DNA.Genetic diversity is usually mentioned with reference to agriculture and maintaining food security. This is because genetic erosion of several crops has already occurred leading to the world's dependence for food on just a few species. Currently, a mere 100 odd species account for 90% of the supply of food crops and three crops - rice, maize and wheat - account for 69% of the calories and 56% of the proteins that people derive from plants.

Species

Species is a group of class of animals and plants having certain common and permanent characteristics that clearly distinguish it from other groups or species (Concise Oxford Dictionary). They are populations in which gene flow occur under natural conditions. By definition, members of one species do not breed with those of other species. Unfortunately, this definition does not work in species where hybridization, self fertilization, or parthenogenesis (reproduction of offspring without fertilization by sexual union) occurs. New species may be established in several ways. The most common method is a geographical speciation (formation of new biological species), the process by which the populations that are isolated diverge through evolution by being subjected to different environmental conditions. Biodiversity is most commonly used and measured by species diversity. There are two major reasons for this: Species are still the most identifiable collective unit of biological organization and the loss of species seems the most irreversible and final of all forms of diversity. Species diversity can be expressed in terms of richness, that is the number of species in an area - for example you can count the number of plant species in your garden which will give you the species richness in your garden. Thus, if you have one neem tree and one mango tree, the tree species in your garden will be two. Ecologists have come up with various diversity indices, which focus not only on the number of species present but also on the number of individuals of a particular species.Diversity indices are of more value to ecologists, since they give an idea of the composition of the communities existing in an area, and help identify species that dominate the community in terms of their abundance, biomass or cover. Species diversity is not uniform throughout the world, some areas are very species rich while others are species poor. Again while one area may have hundreds of plant species another may have an incredible insect diversity. A striking pattern is the increase in diversity from poles to the equator, thus while the tropical areas team with life, temperate areas which are closer to the poles have fewer kind of plants and animals, while the polar regions are stark and barren. Tropical forests are amazingly diverse, a single hectare may contain 40 to 100 different kinds of trees. In contrast in a coniferous or a deciduous forest only about 10 to 30 species can be found.Latitudinal variations are not the only emerging pattern. Diversity is also closely linked to altitude or elevation. The plains of India have a varied species of plants but as you go up, the decrease in the moisture contents in the atmosphere reduces the number of species. The desert area has the least number of species. There are certain species that are endemic to a region that is, they are found in only a particular area and are very special to that area. They have evolved to adapt to that area only and if their habitat is destroyed (e.g. by deforestation) they can easily become extinct. Some plants and shrubs are endemic to only a particular type of forest, such as some found in the evergreen forest will not be found in any other type of forest area. Take the Western Ghats as an example - animals endemic to this area include the Rusty Spotted cat, Nilgiri marten, the Lion-tailed macaque, and the Nilgiri langur.

Forests

The forest is a complex ecosystem consisting mainly of trees that have formed a buffer for the earth to protect life-forms. The trees which make up the main area of the forest create a specialenvironment which, in turn, affects the kinds of animals and plants that can exist in the forest.The FAO (Food and Agricultural Organization) has defined forest as land with crown cover (or equivalent stocking level) of more than 10% and area of more than 0.5 hectare. The trees should be able to reach a minimum height of 5 m at maturity in situ. In the tropical and subtropical region, forests are further subdivided into plantations and natural forests. Natural forests are forests composed of indigenous trees, not deliberately planted. Plantations are forest stands established by planting or/and seeding in the process of afforestation or reforestation. There are about 16 major types of forests in India from the tropical type to the dry type.Forests can develop wherever there is an average temperature greater then about 10 Centigrade in the warmest month and an annual rainfall in excess of about 200 mm annually. In any area having conditions above this range there exists an infinite variety of tree species grouped into a number of stable forest types that are determined by the specific conditions of the environment here. Forests can be broadly classified into many types some of which are the Taiga type (consisting of pines, spruce, etc.). The mixed temperate forests with both coniferous and deciduous trees, the temperate forests, the sub tropical forests, the tropical forests, and the equatorial rainforests.In India it is believed that organized exploitation of forest wealth began with an increase in hunting. Ashoka the Great is said to have set up the first sanctuary to protect the forest and all life in it. The Mughal rulers were avid hunters and spent a great deal of time in the forests.
It was during the British rule that the first practical move towards conservation in modern times took place. They established 'reserved forest' blocks with hunting by permit only. Though there were other motives behind their move, it at least served the purpose of classification of and control over the forests.
Soon after independence, rapid development and progress saw large forest tracts fragmented by roads, canals, and townships. There was an increase in the exploitation of forest wealth. It was only in 1970s that the importance of conservation of forests was realised and the preservation of India's remaining forests and wildlife was given a front seat.

The Wetlands

Wetlands are areas lying along the banks of rivers and lakes and the coastal regions. They are life supporting systems providing fish, forest products, water, flood control, erosion buffering, a plant gene pool, wildlife, recreation and tourism areas. Though they are endowed with a rich biodiversity, yet of late they are being greatly exploited. Many Wetland species have become threatened and endangered because of their dependence on a particular type of wetland eco-system, which has become seriously degraded or destroyed. Such is the case with swampy grasslands and the flood plain wetlands of the Ganges and Brahmaputra river valleys. Large areas have been converted to agricultural land or there has been widespread over-grazing. Removal of sand, gravel and other material from the beds of rivers and lakes has not only caused destruction of wetlands but has led to sedimentation, which has affected other areas. The introduction of exotic plants has had an adverse effect on these areas. The water hyacinth, a native of South America, is now a major pest in many areas forming a vast floating shield over the surface of the water and clogging up rivers and canals. A number of factors have been responsible for the depletion of wetland areas, mainly the mangrove forests, along the coasts of India. Intensive aquacultural development, deforestation, pollution from tankers, domestic waste, agricultural runoff and industrial effluents are some of the factors. Most of the surviving mangroves are now confined to West Bengal and the islands in the Bay of Bengal.In 1981, Chilka Lake, India's largest brackish water lagoon, was designated a Ramsar Wetland of International importance. But its fragile ecosystem has of late come under threat due to both anthropogenic and natural factors. It provides refuge to thousands of migratory birds and the balance in ecosystem has to be maintained to ensure safe habitat for the birds.

Exotic Species

As opposed to native species, which are indigenous and found naturally in an environment, animals and plant species introduced from other countries and which are not otherwise found locally are termed exotic. These introduced or exotic species can adversely affect the ecosystem.In India large variety of exotic animal and plant species, have been introduced from other parts of the world through the ages. Some exotic plants have turned into weeds, multiplying fast and causing harm to the ecosystem, e.g. Water hyacinth and lantana. Exotics are invariably introduced without their natural enemies that control and balance their spread in their native land, and hence grow and flourish without any hindrance and cause harm to the environment. Therefore, when planting saplings, remember to choose only those that form a part of the natural ecosystem of an area. In a stable ecosystem, all species - animals, plants and microbes - are in healthy coexistence. Any disturbance in one gives rise to imbalance in others and this is what happens when an exotic species is introduced.Introduced species can often negatively affect native species. While they are selected specifically for their adaptability and in the long run often out number native species and compete with them for the resources. This results in the expansion of the introduced species and the decline of native species. Plants from all over the world have been brought to India and grown here. Some have proved beneficial while others have not. Vegetables such as chillies and onion have been brought from South America and Persia (modern day Iran) respectively. Coffee, Cashew, eucalyptus and many more species have come from abroad. Some quick growing plant species were brought from Australia for afforestation programmes such as the acacia and eucalyptus. The demand for wood in different industries led to a growth of forest area under these species. These trees shed the leaves on the ground and do not allow other plants to grow nor do they decompose easily. During the rains there is heavy erosion and poor percolation in these areas. Thus the introduction of these species has caused more harm than good to the forests and the soil in general. Some weeds have not been intentionally introduced but have come accidentally as for instance the Mexican weed came along with American wheat that came as PL 480 aid from the USA in the 1960s when quarantine rules were not so strict. In fact all plants and seeds that come from another country should be quarantined to ensure that no other foreign material has come with it.
Source : Edugreen - Teri, New Delhi

Posted in Ecology.

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Biological Rythms in Nature

Tuesday, October 21, 2008



Biological Rhythms in Nature



Sunday, July 6, 2008

An Article by Mohan Pai

BIOLOGICAL RHYTHMS IN NATURE

“God does not play dice with the Universe”- Albert Einstein

Biological Rhythms refers to periodic biological fluctuation in an organism that corresponds to, and is in response to, periodic environmental change. Examples of such change include cyclical variations in the relative position of the Earth to the Sun and to the Moon and in the immediate effects of such variations, e.g., day alternating with night, high tide alternating with low tide..The internal mechanism by which such a rhythmic phenomenon occurs and is maintained even in the absence of the apparent environmental stimulus is termed a biological clock. When an animal that functions according to such a clock is rapidly translocated to a geographic point where the environmental cycle is no longer synchronous with the animal’s cycle, the clock continues for a time to function synchronously with the original environmental cycle.

Humans similarly transported over great distances often experience fatigue and lowered efficiency for several days, a phenomenon known as "jet lag," or jet syndrome.A rhythm with a 24-hour cycle is called a circadian (from Latin circa, "about"; di, "day"?i.e., "about a day"), solar day, diel, daily, diurnal, or nychthemeral rhythm. A lunar tidal rhythm?the regular ebb and flow of oceans and very large inland bodies of water?subjects seashore plants and animals to a rhythmic change; typically two high and two low tides occur each day (about 24.8 hours). Many species of shorebirds exhibit this rhythm by seeking food only when beaches are exposed at low tide.

Monthly rhythms, averaging approximately 29.5 days, are reflected in reproductive cycles of many marine plants and in those of many animals. Annual rhythms are reflected in the reproduction and growth of most terrestrial plants and animals in the temperate zones.Animal behaviourPeriodic change with the time of day, month and year is a most spectacular feature of the environment of the earth. The three major periods thus prevalent are those of the solar day (24 hours), lunar month (29 days) and the calendar year (365 days). Most living creatures have adapted themselves in many ways to this temporal order of their environment, giving rise to a variety of biological rhythms. Theses rhythms enable the plants and animals to carry out their various bodily functions at the most advantageous time of the day, month or year.The cold-blooded lizards must raise their body temperature that necessarily falls during the night by sunning themselves in the morning. The most appropriate time for hunting for prey for them is therefore late morning, when they can be warm and active. Crabs on the seashore must adapt their feeding times in accordance with tides which depend on the rotation of moon. Insectivorous birds must adjust their breeding seasons to correspond with the yearly period of maximum abundance of insects to satisfy the requirements of their fast-growing chicks, and so on.

Animals fall into two broad categories of day-active and night-active, depending on the time during which they actively seek food. On land insects have large membership in both these categories. Cold-blooded reptiles are constrained to be day active, and the primarily visual birds are also day-active. Amongst the ground dwelling mammals, both habits are quite common. While the flying mammals bats, are all active at night, taking advantage of the paucity of night active birds.Even within these categories, however, not all animals are equally active throughout the day or night. Their activity patterns vary, depending both on changes in the physical environment, as well as in response to the activity pattern of other animals in their habitat.

Dawn and dusk are periods of the most rapid change in light intensities, and most animal use these as cues to initiate or terminate their period of rest. Thus birds become active and bats go to rest at dawn, and the reverse occurs at dusk. If we look further, the Jungle Crow becomes active at lower light intensities than the Indian Myna, and the pipistrelle bats at higher light intensities than the Flying Foxes. Dawn and dusk are also the times at which the air is least turbulent, permitting sound to be carried farthest. That is why birds indulge in their most intense vocalization at these times, giving rise to dawn and dusk choruses; as do monkeys like the Hanuman Langur.Animals also adjust their periods of activity to minimize competition with other species. Thus various species of bees have peaks of flower-visiting activity at different times of the day, and different species of mosquitoes have peak blood-sucking at different times at night.

Such rhythms have greatly fascinated physiologists who have attempted to study them under experimental conditions. It has been shown that the rhythms are not merely imposed from outside, but persist even under totally unchanging conditions. Under these conditions, however, the period of rhythm is not precisely 24-hours, but nearly so, hence these rhythms are known as circadians (circa, about, dies, day). They are adjusted to the diurnal rhythm of light, temperature, etc. Through the external cues. It is now known that animals use social cues provided by other animals as well in adjusting their rhythms. Thus bats confined to deep part of the cave with no environmental cues of light or temperature can still synchronize their activity with the day-night regime by picking up their cues from the vocalization of the other bats in the cave.
Marine animals too exhibit a number of biological rhythms. The zooplankters migrate towards the surface at night and move down deeper during daytime. The animals on the shore adjust their periods of activity in relation to the tides. Furthermore, the tides change not only once or twice a day, but vary in their magnitude with the phase of the moon and the time of the year. Certain marine animals such as the famous Palolo worm of Fiji seem to synchronize their breeding with these tides. Thus the palolo worm swarms to reproduce every year 7 to 9 days after the full moon in November.At the other end from the palolo worm, the entire population of which breeds on just one day in the whole year, is an animal such as our Asiatic elephant which seems to breed, and also to come to musth, at any time of the year. The Chital has an extended breeding season, its rutting coinciding with the monsoon and the season of the birth of calves peaking from January to March, although some calves are born in every month of the year. This coincidence of birth of calves with the most difficult season of the year in terms of food availability is truly puzzling. In Karnataka, the major predator of Chital, the Wild Dog, breeds from January to March, presumably because its food is most plentiful at the time of fawning by chital. Among our birds, the small insectivores such as Warblers breed during the monsoon, apparently because this is the time of maximum abundance of insects to feed their chicks. The birds of prey, on the other hand, breed mostly during December-March, again apparently because this is the time of maximum abundance of their rodent prey which multiplies following the seeding of grasses and cereal crops towards the end of the monsoon.The breeding of herons, storks and other colonially breeding water-birds coincides with the monsoon. Thus at Bharatpur in Rajasthan or Ranganathittu at Shrirangapatna they breed from July to October, the southwest monsoon bringing most of the rains in these parts. On the other hand, at Vedanthangal near Chennai they breed from January to March, this part receiving most of its rainfall during the northeast monsoon. However, this rule is not without exception. Night Herons breed at Ranganathittu from April to August, but near Bangalore, hardly 120 km away, they breed from January to March; similarly Little Cormorants breed at Ranganthittu from July to October, but hardly 80 km away they breed from January to March.

The migratory birds show a remarkable annual rhythm of long distance movements. Many of our ducks, teals and waders breed in Siberia in summer, from April to September. In autumn they migrate south to India, staying here from October to March, moving north again in the spring. The migratory impulses of these birds is known to be controlled by changing day-length. They migrate southwards after breeding in response to decreasing day-length and north after wintering in response to increasing day-length.

Finally, a most spectacular example of biological rhythm is furnished by some species of tropical bamboos. Our commonest species Bambusa arundinacea, flowers and seeds only once in its lifetime at an age of 45-48 years, after which it invariably dies. Moreover, the flowering is synchronized for a whole population so that all the bamboo species flower and die over a region of several thousands of hectares within the space of three to four years. The significance of this seems to lie in the fact that when seeds are very occasionally produced in such large quantities, predators on the seeds such as rodents can only devour a small fraction of them. If on the other hand a much smaller seed crop was produced every year, a much greater fraction of the seed could be destroyed by the predators. Hence, it is likely that massive seeding in a few years has been favoured by natural selection.Animals not only respond to natural cues, but as the persistence of their rhythms under constant conditions shows, they also have endogenous rhythms - Circadian as well as circannual, and perhaps of much longer duration as well as in the case of bamboos. The precise nature of these biological clocks is yet unknown. Animals also use these clocks for purposes other than adjusting behavioural rhythms. Thus honey-bees, as also some fish and birds, are known to use the sun for navigation. However the position of the sun varies with the time of the day. These animals make fine adjustments for such movements of the sun by using biological clock.

Reference: Encyclopedia of Indian Natural History - Edited by R. E. Hawkins for Bombay Natural History Society.

Posted in Biological Rhythms.

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Of Insects & Men

Wednesday, October 22, 2008

Thursday, July 3, 2008

Of Insects & Men
An Article by Mohan Pai


"Go to the ant, thou sluggard - consider her ways and be wise …."
- King Solomon


Insects have evolved from their wormlike ancestors some 350 million years ago and have been around for a much, much longer period than other forms of life like the reptiles and the mammals and the late comer Homo sapiens (only 2-3 million-year old). Cockroaches (Blattodea), for instance have been around since the upper Carboniferous (300 million years). There are only a few terrestrial habitats and niches that have not been occupied by some group of insects, and a few climatic conditions to which none have become adapted. Even the arctic zones have a sizeable insect fauna (especially flies) even though activity and reproduction in theses extremes is limited to a few months only.
Insects (Class Insecta) are a major group of arthropods and the most diverse group of animals on the Earth, with over a million described species?more than half of all known living organisms?with estimates of undescribed species as high as 30 million, thus potentially representing over 90% of the differing life forms on the planet. Insects may be found in nearly all environments on the planet, although only a small number of species occur in the oceans, a habitat dominated by the other arthropod group of crustaceans.
Bottle-fly
There are approximately 5,000 dragonfly species, 2,000 praying mantis, 20,000 grasshopper, 170,000 butterfly and moth, 120,000 fly, 82,000 true bug, 360,000 beetle, and 110,000 bee, wasp and ant species described to date. Estimates of the total number of current species, including those not yet known to science, range from two million to fifty million, with newer studies favouring a lower figure of about six to ten million. Adult modern insects range in size from a 0.139 mm (0.00547 in) fairyfly (Dicopomorpha echmepterygis) to a 55.5 cm (21.9 in) long stick insect (Phobaeticus serratipes). The heaviest documented insect was a Giant Weta of 70 g (2― oz), but other possible candidates include the regius and Goliath beetles Goliathus goliatus, Goliathus Cerambycid beetles such as Titanus giganteus, though no one is certain which is truly the heaviestThe study of insects (from Latin insectus, meaning “cut into sections”) is called entomology, from the Greek e?t?ĩ??, also meaning “cut into sections"

The overwhelming success of insects is due to at least six major assets that they developed in the endless quest for survival: an external skeleton, small size, flight, metamorphosis, specialized system of reproduction and adaptability, Insects are a living example of the validity of what man now appears to have grasped as truism - "Small is Beautiful". Unlike ourselves, the demands of insects from our environment (with mostly non-renewable resources) are meagre. The fact that insects were the first animals to develop wings for flight, and that most have still retained, if not perfected them, is a great asset to their overwhelming success. Flight has enabled them to escape from enemies in a jiffy, to traverse large distances to find food and to search efficiently for their mates, besides other obvious advantages.The development of metamorphosis has enabled insects to divide their life stages into four distinct phases and structural adaptations. This kind of pattern has allowed insects to adopt two completely different life-styles - a sort of 'Dr. Jekyll and Mr. Hyde' character, so to speak; the larval and adult stages being able to exploit entirely different food sources and life-styles, to distinct advantage. Unlike humans, who spend only a fifth of our life-span as "immatures", insects spend almost all their time as inconspicuous and admirably adapted larvae or nymphs; the adult period, efficiently being used only for males and females to find each other, mate and reproduce, ensuring the next generation, which is all that life is really about. On this critical requirement for a generally bisexual living entity, insects have achieved wonders that man still is fumbling for. Winged adults are able to delay fertilization of the egg, even after mating has occurred (by storing the male's sperm cells in a little sac called spermatheca until the female is able to find proper environmental conditions and food for her young).

Termite mound made by cathedral ants

Social insects (termites, bees, ants, wasps) have even developed ways and means to produce 'boys or girls' and even different 'castes' to suit, not their fancy, but their genuine requirements !Plants provide food for a great host of insect groups. Leaves are a common plant part that insects consume and some species are remarkable defolators of whole trees. Many other insects live on or inside bark or timber of trees and many species of insects specialize in being 'undertakers' which feed on dead plant matter. Most plant that flower have come to depend on special kind of insects to help them in pollination and hence in their regeneration.

Insectivorous plants, on the other hand entice and feed on insects.Insects also have associated themselves with vertebrate animals, either as their food or as their hosts. Some insects have developed into blood-feeders (Mosquitoes & Biting flies) and these cause irritation by their bites in addition to loss of blood. More importantly, insects also assume the role of dangerous vectors of a variety of animal and human diseases.

Predation is widespread among insects and it takes several forms according to the insect group in which it occurs and the prey they attack. Mantids, for instance, wait inconspicuously and motionless for their prey to come within reach of their prehensile forelegs. Dragonflies are master predators of the air, consuming their prey while in flight. Many insects have become parasitic, especially on other insects which they help to keep in tolerable population limits. Much of the parasitism is of special type, which results in the host being completely consumed and in its death. The other is where the host is allowed to survive by the parasite which is in its favour.Most courses in Entomology deal with insects as enemies of man. We have studied insects in the field, classroom, laboratory mainly with the objective of finding ways and means of dealing with the pestiferous species that have hounded us from time immemorial.

To quote American entomologist, S. A. Forbes:

"The struggle between man and insects began long before the dawn of civilization, has continued without cessation to the present time, and will continue, without doubt, as long as the human race endures. It is due to the fact that both men and certain insect species constantly want the same things at the same time. Its intensity is owing to the vital importance to both, of the things they struggle for, and its long continuance is due to the fact that the contestants are so equally matched. We commonly think of ourselves as the lords and conquerors of nature, but insects had thoroughly mastered the world and taken full possession of it long before man began the attempt. They had, consequently, all the advantage of a possession of the field when the contest began, and they have disputed every step of our invasion of their original domain os persistently and so successfully that we can even yet scarcely flatter ourselves that we have gained any important advantage over them. Here and there a truce has been declared, a treaty made, and even partnership established advantageous to both parties of the contract - as with bees and silkworms, for example; but wherever their interests and ours are diametrically opposed, the war still goes on and neither side can claim a final victory. If they want our crops, they still help themselves to them. If they wish the blood of our domestic animals, they pump it out of the veins of our cattle and our horses at their leisure and under our very eyes. If they choose to take up their abode with us, we cannot wholly keep them out of the house we live in. We cannot even protect our very persons from their annoying and pestiferous attacks, and since the world began, we have never yet exterminated - we probably never shall exterminate - so much as a single insect species. They have, in fact, inflicted upon us for ages the most serious evils without our even knowing it".

Reality in nature (of which man is an integral part) teaches us the fact that while insects do not need man for their survival, man would face certain extinction if insects were to be removed from his ecosystem .Insects belong to pestiferous species (mosquitoes, bedbugs, biting flies, fleas, animal lice) and beneficial species (honeybees, silkworms, lac insect, mealybug, etc.)

Grass hopper

The beneficial species do a great deal for man.

0 Pollination, not only of man's commercial plants, but also of many wild plants that make up the local flora which are important components of the ecosystem, is perhaps the most beneficial act that insects perform in man's favour. Insects are responsible for many, if not most, of our fruit, vegetable, ornamental and field crops setting fruit after they pollinate the flowers.

0 The next important task through which insects do us a great amount of good, is by fighting among themselves. The poisonous chemicals that man is compelled to employ (even though they are hazardous to him and his environment), are insignificant tools compared to the multitudinous hordes of insect friends that kill and feed upon his enemies as a daily chore !This predation is the greatest single factor that prevents plant feeding insects from out-competing and overwhelming the rest of the living world is that they attacked and fed upon by other insects. As a hypothetical example, if just one pair of house-flies were able to produce normally, resist disease and combat their natural enemies, they would, in just five or six months, cover the entire planet Earth 50 feet high with their progeny ! But the balance that exists in nature never allows this to happen.

0 Insects are useful to man in their value as food, direct or indirect.

Owing to their huge numbers, though of small size, insects probably exceed all other animal matter (biomass on earth in weight on land. The birds alone probably depend on insects for two-thirds of their food requirements. Many of our commercial fish species subsist largely on aquatic insects. Many animals, especially those like pigs (meat) and fur animals, eat white grub and other insects .Man has survived on insect food in his early evolutionary history, and even now some of our primitive and tribal races delight their palate by eating insects such as termites, grasshoppers, crickets, beetles, caterpillars, ants, etc.

0 Some varieties of insect feed on and destroy plants (weeds) that are harmful to man's interest.

0 Millions of individuals of subterranean species of insects that live below ground (as immatures or adults, or both) help to improve physical condition of the soil and promote its fertility. Insects help to break up rock particles and expose them to the action of water and other weathering influences by bringing them up to the soil surface. The numerous underground tunnels made by insects facilitate the circulation of much-needed air into soil that is essential for good health of plants. They also add valuable organic matter and humus to soil. Even their dead carcasses accumulating on the soil surface are a great source of fertilizers to plants. Their excreta, in chemical content and in mere volume, far exceeds anything that man or any of the larger animals, in unison, can incorporate into soil.

0 Some of the most helpful insects are those that dutifully perform their role as scavengers of 'nature's waste. First, they remove from the surface of the earth the dead and decomposing bodies of plants and animals, converting them into simpler and more assimilable compounds, removing what otherwise would be a health menace. Secondly, they convert they convert dead plants and animals into simpler substances that could then be reused by growing plants as food. Man may find these scavenging animals repulsive, but without them the world would be a cesspool.

0 In medieval ages, almost every insect was supposed to be of medicinal value. Most of these beliefs have now found to be based on superstition. However, some of Insects also produce useful substances such as honey, wax, lacquer and silk. Honey bees have been cultured by humans for thousands of years for honey, although contracting for crop pollination is becoming more significant for beekeepers.

The silkworm has greatly affected human history, as silk-driven trade established relationships between China and the rest of the world. Adult insects such as crickets, and insect larvae of various kinds are also commonly used as fishing bait..Insects have taught man a great many things and have helped him to solve some of the most puzzling problems in natural phenomena. They have also led the way to some of man's remarkable inventions. The ease of handling them, their rapidity of multiplication, great variability, and low cost of maintenance and rearing, have made insects the ideal experimental animals for the study of physiology, biochemistry and ecology.

The foundation of modern genetics have been derived from studies of the lesser fruit-fly of the genus Drosophila. Studies of variation in populations of single species, geographical distribution, and the relation of colour and pattern to ecological habitat or other surroundings have been greatly advanced through the study of insects, as has the geological history of the earth (continental drift) and a better picture of the planet's living inhabitant's evolution. Principles of polyembryony and parthenogenesis have also been discovered by the study of insects.

The behaviour and psychology of higher animals (including man) have been illuminated by a study of the reaction of insects such as the honeybee, and valuable lessons in sociobiology for us have been deduced from a study of the economy of social insects. Insects are also used as an index for stream pollution and such important factors in conservation of our natural resources.

Sources: Encyclopedia Of Indian Natural History by R. E. Hawkins, Wikipedia.

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Charles Darwin - A Tribute

Thursday, February 5, 2009

Charles Darwin - A tribute

An Article by Mohan Pai

Darwin Day

February 12th, 2009 will mark the 200th birthday of Charles Darwin who holds a rightful place along with Galileo, Copernicus, Newton and Einstein.

(12 February, 1809-19 April,1882)

Darwin's Evolution Theory Survives, Thrives and Reshapes the World.

When the 22-year-old Charles Darwin sailed into the South Seas in 1831 onboard the HMS Beagle, a survey ship being sent out by the British Admiralty, little did he realise that he had embarked on a path-breaking voyage that would connect up his ideas and revolutionise the nascent field of genetics and then, at an ever quickening pace, with molecular biology, ecology and embryology. Today, 150 years after Origin of Species, Darwin's legacy is a larger, richer, more diverse set of theories than he could have imagined.

Beagle returned to England in October of 1936 and the young, self-taught naturalist's treasure trove of the journey was immense: a collection of 368 pages of zoology notes, 1,383 pages of geological notes, a 770-page diary, in addition to 1,529 species in bottles of alcohol and 3,907 dried specimens, not to mention live tortoises caught in the Galapagos.
Milestones along the way included experiencing the great diversity of species in tropical Brazil and discovery of fossils, including a giant sloth 400 miles south of Buenos Aires, which caused him to ponder how these creatures became extinct. Account by gauchos

1831: Darwin leaves on a five-year around-the world journey on HMS Beagle

on the Argentine pampas of their killing of indigenous peoples taught him about the primal, territorial impulses of the human animal. And of course, there was a relatively brief, five-week stay in the "frying hot" Galapagos, where he was able to contemplate how closely related species of turtles and mocking birds inhabited neighbouring islands, implying a common ancestry for both groups.

In this anniversary year, Darwin's greatest bequest can be found in the enormous body of research and theorising that extends directly from his writings. It also serves to underline how evolution itself has undergone radical alteration in the past 150 years, a merger of the original theory with science of the gene, which Darwin had as little understanding of as the ancients did.

Charles Robert Darwin. At the age of 51, Charles Darwin had just published On the Origin of Species.

Darwin is the first of the evolutionary biologists, the originator of the concept of natural selection. His principal works, The Origin of Species by Means of Natural Selection (1859) and The Descent of Man (1871) marked a new epoch. His works were violently attacked and energetically defended, then; and, it seems, yet today. Charles Robert Darwin was born at Shrewsbury. His father was a doctor and his mother was the daughter of Josiah Wedgwood. Darwin first studied medicine at Edinburgh. Will as they might, it soon became clear to the family, and particularly to young Charles, that he was not cut out for a medical career; he was transferred to Cambridge (Christ’s Church, 1828), there to train for the ministry. While at Cambridge, Darwin befriended a biology professor (John Stevens Henslow, 1796-1861) and his interest in zoology and geography grew. Eventually, Darwin came under the eye of a geology professor, Adam Sedgwick (1785-1873). Just after a field trip to Wales with Sedgwick during which Darwin was to learn much from “Sedgewick’s on-the-spot tutorials” and was to develop “intellectual muscle as he burnt off the flab” — he was to learn, that, through the efforts of Professor Henslow, that he had secured an invitation to go aboard the Beagle, which, apparently, was being outfitted by the admiralty for an extended voyage to the south seas. In a letter, Henslow was to advise that “you are the very man they are in search of.” Desmond and Moore were to write: “The admirals were scouting out someone to accompany Capt. Robert FitzRoy on his two-year survey of coastal South America. FitzRoy, only twenty-six himself, wanted a young companion, a well-bred ‘gentlemen’ who could relieve the isolation of command, someone to share the captain’s table. Better still if he were a naturalist, for there would be unprecedented opportunities. The ship was equipped for ’scientific purposes’ and a ‘man of zeal & spirit’ could do wonders, Henslow enthused. Charles might not be a ‘finished naturalist,’ but ‘taking plenty of Books’ would help, and he was the obvious choice.”Needless to say, though there was some anxious moments, Darwin was accepted by those responsible for the voyage. The plans for the cruise of the Beagle were extended, in that it was to take place over the best part of five years (1831-36) and was to take in the southern islands, the South American coast and Australia. While aboard the vessel, Darwin served as a geologist, botanist, zoologist, and general man of science. It was rare to have aboard a sailing vessel of the early 19th century a person who could read and write, let alone one, such as Darwin, who could appreciate the necessity of applying scientific principles to the business of gathering data and carrying out research on it. Darwin gained an experience which would prove to be a substantial foundation for his life’s work; the almost immediate result was the publication of his findings in 1840, Zoology of the Beagle.

The Voyage of the Beagle

“When on board H.M.S. Beagle as naturalist, I was much struck with certain facts in the distribution of the organic beings inhabiting South America, and in the geological relations of the present to the past inhabitants of that continent. These facts, as will be seen in the latter chapters of this volume, seemed to throw some light on the origin of species- that mystery of mysteries, as it has been called by one of our greatest philosophers. On my return home, it occurred to me, in 1837, that something might perhaps be made out on this question by patiently accumulating and reflecting on all sorts of facts which could possibly have any bearing on it. After five years’ work I allowed myself to speculate on the subject, and drew up some short notes; these I enlarged in 1844 into a sketch of the conclusions, which then seemed to me probable: from that period to the present day I have steadily pursued the same object. I hope that I may be excused for entering on these personal details, as I give them to show that I have not been hasty in coming to a decision.” (Darwin’s opening paragraph to The Origin of Species, 1859.)

As “Darwinism” became widely accepted in the 1870s, amusing caricatures of him with an ape or monkey body symbolised evolution.

It was likely Darwin’s reading of Adam Smith which led Darwin to his decisive breakthrough. (”Adam Smith was the last of the moralists and the first of the economists, so Darwin was the last of the economists and the first of the biologists.”) Darwin read not only about those “laws” that govern the accumulation of wealth, but also those “laws” which lead to being poor. In regards to these poor “laws,” Darwin read Malthus’ Essay on Population: “In October 1838, that is fifteen months after I had begun my systematic enquiry, I happened to read for amusement Malthus’ Population, and being well prepared to appreciate the struggle for existence [a phrase used by Malthus] which everywhere goes on from long-continued observation of animals and plants, it at once struck me that under these circumstances favourable variations would tend to be preserved and unfavourable ones to be destroyed. The result of this would be a new species. Here then I had at last got hold of a theory by which to work.” Personally speaking, Darwin, directly on account of his early adventures (with his evidence and his conclusions: zoological, botanical, geological and paleontological), could no longer subscribe to the teachings of Genesis, viz., that every species had been created whole and have come through the ages unchanged. All the evidence supports (and none exists that disproves) the proposition that life on earth has evolved; life started out slow and small, and our current state of existence is as a result of some process working upon natural materials throughout a period that consists of millions and millions of years. The question for Darwin is what is this process, a question which, for twenty years, Darwin worked on. He considered his own personal experiences which were considerable and the data that he had gathered. He read and read widely; he abstracted the learned journals; he talked to breeders of domesticated animals. And only after years of work did Darwin feel himself ready to express himself. More years were to pass, during which he gathered more and more evidence, when, in 1859, Darwin came out with his scholarly presentation, The Origin of Species.


Darwin’s shattering work, The Origin of Species, came out (”a sell out in one day”); it is now recognized as a leading work in natural philosophy and in the history of mankind. Simply stated, Darwin’s theory is that things, and, in particular, life, evolves by a process which Darwin called “natural selection.” “Currently we accept the general idea that biological development can be explained by mutations in combination with natural selection. In its essential parts, therefore, Darwin’s theory of development has been accepted. In Darwin’s time mutations were not known about; their discovery has led to extensive modifications of his theory, but it has also eliminated the most important objections to it. …We are beginning to see that the awesome wonder of the evolution from amoeba to man - for it is without a doubt an awesome wonder - was not the result of a mighty word from a creator, but of a combination of small, apparently insignificant processes. The structural change occurring in a molecule within a chromosome, the result of a struggle over food between two animals, the reproduction and feeding of young - such are the simple elements that together, in the course of millions of years, created the great wonder. This is nothing separate from ordinary life. The wonder is in our everyday world, if only we have the ability to see it.” (Alfvén’s Atom, Man, and the Universe.) Darwin’s “evolutionary and comprehensive vision” is a monistic one, it shows that our universe is a “unitary and continuous process,” there does not exist a “dualistic split,” and that all phenomena are natural. Darwin’s idea, it is written, “is the most powerful and the most comprehensive idea that has ever arisen on earth. It helps us understand our origins … We are part of a total process, made of the same matter and operating by the same energy as the rest of the cosmos, maintaining and reproducing by the same type of mechanism as the rest of life …” (Sir Julian Huxley.) The theory of evolution is no longer just a theory; an overwhelming amount of evidence has accumulated since Darwin. Darwin’s theory has never been successfully refuted. Darwin discovered a law just as surely as Copernicus, Galileo and Newton discovered laws: natural laws. Just as the earth is in orbit and has come to be and is depended on the force of gravity, a natural law; so life has come into being and exists and is depended on the force of natural selection. One need not necessarily understand the why or the how of it, but a natural law such as gravitation or selection nonetheless exists, whether a particular puny human being, or group of them believe it or not. The theory as presented in Darwin’s The Origin of Species, I should say, was not new to the world and it cannot be attributed to Darwin. The theory, contrary to popular belief has been around since Aristotle and Lucretius. Darwin’s contribution is that he gathered indisputable evidence, and he set forth a theory on how evolution works, the theory of natural selection. Darwin: “It may be said that natural selection is daily and hourly scrutinising, throughout the world, every variation, even the slightest; rejecting that which is bad, preserving and adding up all that is good; silently and insensibly working, whenever and wherever opportunity offers, at the improvement of each organic being in relation to its organic and inorganic conditions of life. We see nothing of these slow changes in progress, until the hand of time has marked the long lapses of ages, and then so imperfect is our view into long past geological ages, that we only see that the forms of life are now different from what they formerly were."

Darwin's book The Descent of Man was published in 1871 in which he tied the human lineage to primate ancestors, provoking outrage in some quarters and the caricaturing of his image. Darwin had avoided discussion of human evolution in Origin of Species, but his The Descent of Man, and Selection in Relation to Sex attributed human beginnings to Old World monkeys, an assertion that also offended many.

We will let Julian Huxley sum up Darwin’s place in the history of science: “Darwin’s work … put the world of life into the domain of natural law. It was no longer necessary or possible to imagine that every kind of animal or plant had been specially created, nor that the beautiful and ingenious devices by which they get their food or escape their enemies have been thought out by some supernatural power, or that there is any conscious purpose behind the evolutionary process. If the idea of natural selection holds good, then animals and plants and man himself have become what they are by natural causes, as blind and automatic as those which go to mould the shape of a mountain, or make the earth and the other planets move in ellipses round the sun. The fact that evolution occurs became accepted by the scientific community and much of the general public in his lifetime, while his theory of natural selection came to be widely seen as the primary explanation of the process of evolution in the 1930s, and now forms the basis of modern evolutionary theory. In modified form, Darwin's scientific discovery remains the foundation of biology, as it provides a unifying logical explanation for the diversity of life.”

References: Scientific American (January, 2009), Wikipedia, The Complete Works of Charles Darwin Online, Peter Landry in Biographies.

The Complete Works of Charles Darwin Online can be accessed at:http://darwin-online.org.uk/

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Global Warming & India

An article by Mohan Pai
(This article was written by me for a publisher in Goa more then two years ago. It’s still very relevant and I thought I will reproduce it here for my blog readers.)

The Earth is heating up - and fast.

Cause for alarm ?

INTRODUCTION
Global Warming issue is now really hotting up. The 'Catastrophe' that the world and humanity now faced with is of such mammoth proportions and unprecedented that humanity's very survival is in question. Sceptics thought that it was a case of "crying wolf". But the wolf now seems to be at our very doorstep.
11 of the last 12 years have been warmest on record.Intergovernmental Panel on Climate Change issued the summary of its fourth report in Paris on May 2 of this year. It is quite categorical about the fact that global warming is mainly due to anthropological (human-made) causes. Mainly the emission of greenhouse gases into the atmosphere due to human influence. For decades, this has been a topic of conjecture but no more. All the signs are now clearly there - the melting ice of the glaciers, increase in the number of heat waves, increased intensity of tropical storms, changing weather patterns and rising sea levels.
Worldwide, very little is being done to control or reduce the emissions of greenhouse gases. U.S.A. which is the largest emitter (25%) of greenhouse gases is not even a signatory to Kyoto protocol that is formed to control the greenhouse gases emissions. Deforestation, a major contributor to greenhouse gases emission, continues unabated in Brazil and Indonesia releasing billions of tons of Co2 into the earth's atmosphere.
For India, the reality lies in some stark occurrences like farmer suicides or disappearance of two islands in the Sunderbans due to rising water displacing 6,000 people. Also the fact that the Himalayan glaciers are melting fast and some very clear signs of rise in sea levels.
For Goa, implications of global warming will be truly horrendous. Some predictions give the year 2020 when India's shorelines will be inundated with one-metre rise in sea level. The entire West Coast will be devastated and Goa will go. One estimate puts the loss of property and assets in Goa at Rs. 5,000 billion. The three metros - Mumbai, Chennai and Kolkota are also expected to be submerged along with most of the coastal settlements of India.
It could happen by 2030 0r 2070 but, the probability is very high. The issue is of a global-scale and requires global-scale action. About time everybody woke up.
Are we going to shut the barn door after the horse has bolted ?
Mohan Pai
Bangalore
December 10. 2006


WHAT IS GLOBAL WARMING ?

The earth's average temperature is on the rise. For decades this has been a subject of conjecture, but no more. The climate change is with us. According to Climatologists, 2005 was the warmest year in a century, with 1998, 2002, 2003 and 2004 next in line. The visible effects can now be felt in the form of melting glaciers in Greenland, Alaska, the Alps, the Himalayas and the polar regions of the Arctic and the Antarctic. Permafrost (permanently frozen soil) in Canada, Alaska and Siberia is melting at an alarming rate. Sea levels are rising. Hurricanes are becoming more numerous and more intense. According to some, humanity is sitting on a volatile time bomb - one that could send the entire planet into a tailspin of epic destruction, with detonation not far in the future. But is this a realistic scenario ?
This diagram predicts the global temperatures for the period 2070-2100 vs 1960-1990 average temperatures.
One of the most hotly debated topics on the earth today is the subject of climate change. The term 'global warming' which in common usage refers to recent warming and implies a human influence. According to the National Academy of Sciences, the average surface temperature of the earth went up by one degree Fahrenheit during the past hundred years, with accelerated warming occurring within the past 20 years and the decade of 1995-2005 being the warmest during the last hundred years
It is such an intricate and complex subject that even today's super computers have been inadequate for correct predictions. Since 1950 there have been indications of rise in global average temperatures and in the seventies and the eighties of the last century the phenomena started becoming more prominent. Considering the seriousness of the threat, the United Nations set up the Intergovernmental Panel on the Climate Change (IPCC) in the year 1988. With hundreds of scientists and specialists working on the project, the Panel has built a massive data base and so far issued four reports. The fourth report was issued in the month of February, 2007 in which the IPCC has sounded the bleakest warning on Climate Change that human activity is the main driver, "very likely" causing most of the rise in global temperatures since 1950. The following graph indicates the probability of the phenomenon and the warning signs that are becoming apparent.

WARNING SIGNS
*Eleven of the last 12 years are among the warmest on record
*Oceans have warmed down to 3,000 metres
*Mountain glaciers and snow cover have declined
*Satellites have seen an acceleration in sea level rise
*More intense and longer droughts have been observed
*Arctic ice cover is shrinking in depth and in extent

KEY FINDINGS
It is very likely that human activities are causing global warming.
Possible temperature rise by the end of the century ranges between 1.1C and 6.4C (2-11.5F)
Sea levels are likely to rise by 28-43cm
Arctic summer sea ice is likely to disappear in second half of century
It is very likely that parts of the world will see an increase in the number of heat waves
Climate change is likely to lead to increased intensity of tropical storms
75-250 million people across Africa could face water shortages by 2020
Crop yields could increase by 20% in East and Southeast Asia, but decrease by up to 30% in Central and South Asia Agriculture fed by rainfall could drop by 50% in some African countries by 2020
20-30% of all plant and animal species at increased risk of extinction if temperatures rise between 1.5-2.5C
Glaciers and snow cover expected to decline, reducing water availability in countries supplied by melt water
Big questions remain about the speed and extent of some impending changes, both because of uncertainty about future population and pollution trends and the complex relationships of the emission of the greenhouse gases, clouds, dusty kinds of pollution, the oceans and the earth's veneer of life, which both emits and soaks up carbon dioxide and other such gases.
The world’s primary international agreement on combating global warming is the Kyoto Protocol, an amendment to the United Nations Framework Convention on Climate Change (UNFCCC), negotiated in 1997. The Protocol now covers more than 160 countries globally and over 55% of global greenhouse gas emissions. The United States, the world’s largest greenhouse gas emitter (25% of the total world emission); Australia; and Kazakhstan have refused to ratify the treaty. China and India, two other large emitters, have ratified the treaty but, as developing countries, are exempt from its provisions. This treaty expires in 2012, and international talks began in May 2007 on a future treaty to succeed the current one.

These graphs show actual data and 2001 Ipcc predictions for carbon dioxide concentrations in the atmoshere in parts per million (top graph): changes in temperature relative to 1990 temperatures (middle graph) and changes in sea-levels relative to 1990 levels (bottom graph).

GREENHOUSE EFFECT
The earth's climate and weather is driven by energy from the sun. The greenhouse effect is the rise in temperatures that the earth experiences because certain gases in the atmosphere (water vapour, carbon dioxide, nitrous oxide, methane and ozone, for example) trap energy from the sun. The energy heats the earth, which in turn radiates that heat back into space. But, much of this heat is retained by the greenhouse gases in the earth's atmosphere. Without these gases, heat would escape back into space and the earth's average temperature would be about 60 degrees Fahrenheit colder and obviously, this would not be an environment conducive for life and the earth would be inhabitable.

But the problem arises when the quantum of greenhouse gases increases to a higher level and the greenhouse effect becomes stronger increasing the heat in the atmosphere and making the earth warmer than usual. Even a little extra warming may give rise to serious problems for life on earth - humans, plants and animals.

The greenhouse effect was discovered by Joseph Fourier in 1824 and was first investigated by Svante Arrhenius in 1896. On earth, the major greenhouse gases are water vapour, which causes about 36-70% of the greenhouse effect (not including the clouds), carbon dioxide (Co2), which causes 9-26%, methane (Ch4) which causes 4-9% and ozone, which causes 3-7%. The atmospheric concentrations of Co2 and Ch4 have increased by 31% and 149% respectively above pre-industrial level since 1750. These levels are considerably higher than at any time during the last 6,50,000 years, the period for which reliable data has been extracted from ice cores.
About three-quarters of the anthropogenic (man-made) emissions of Co2 to the atmosphere during the past twenty years are due to fossil fuel (petrol, diesel, coal, etc.) burning. The rest of the anthropogenic emissions are predominantly due to land-use change, especially deforestation.

If current trends continue, we will raise atmospheric Co2 concentrations to double pre-industrial levels during this century. That will probably be enough to raise global temperatures by around 2 to 5 degrees Centigrade. Some warming is certain, but the degree will be determined by feedbacks involving melting ice, the oceans, water vapour, clouds and changes in vegetation.
The main causes for the increased greenhouse effect are the burning of the Fossil Fuels and Deforestation

Fossil Fuels and the Global Carbon Cycle
Huge amounts of carbon have been captured by plants and buried in the ground in the form of coal, oil, natural gas called fossil fuels. These fuels have accumulated over the course of millions of years. With the advent of Industrial Revolution, mankind began extracting and burning earth's vast reserves of these fuels. This released millions of tons of carbon, in the form of Co2 in the atmosphere, thus increasing the levels of greenhouse gases that are now affecting the earth's temperature. Since then, atmospheric concentrations of Co2 have increased nearly 30%, methane concentrations have more than doubled, and nitrous oxide have risen about 15%. These increases have enhanced the heat trapping capability of the earth's atmosphere, and will continue to do so for years to come.
As per the IPCC report : “Annual fossil fuel carbon dioxide emissions increased from an average of 6.4 GtC (billion tonnes of carbon) in the 1990s to 7.2 GtC in 2000-2005.”

Deforestation and the Global Carbon Cycle

Carbon dioxide ( CO2) is the major gas involved in the greenhouse effect, which causes global warming. All the things that produce CO2 (like car burning gas) and the things that consume Co2 (growing plants) are involved in the "global carbon cycle".
Tropical forests hold an immense amount of carbon, which joins with oxygen to form CO2. The plants and soil of tropical forests hold 460-575 billion metric tons of carbon worldwide. Each acre of tropical forest stores about 180 metric tons of carbon.
Deforestation increases the amount of CO2 and other trace gases in the atmosphere. When a forest is cut and replaced by cropland and pastures, the carbon that was stored in the tree trunks (wood is about 50% carbon) joins with oxygen and is released into the atmosphere as CO2.
The loss of forests has a great effect on the global carbon cycle. From 1850 to 1990, deforestation worldwide (including that in the United States) released 122 billion metric tons of carbon into the atmosphere, with the current rate being 1.6 billion metric tons per year. In comparison all the fossil fuels (coal, oil and gas) burned during a year release about 6 billion tons per year.
Releasing CO2 into the atmosphere increases the greenhouse effect, and may raise global temperature. The role of fossil fuels burned by cars and industry is well known, but tropical deforestation releases about 25% of the amount released by fossil fuel burning. Tropical deforestation, therefore, contributes a significant part of the increasing CO2 in the atmosphere.

GLOBAL TEMPERATURE PROJECTIONS

The Intergovernmental Panel on Climate Change predicts that temperatures are most likely to rise by 1.8 C - 4C by 2001. But the possible range is much greater; 1.1C - 6.4C. The maps above show how a range of three different scenarios will affect different parts of the world.
The emissions scenarios,B1, A1B, A2 used to create the maps above, are based on a range of detailed economic and technological data. These versions of the future consider different population increases, fossil and alternative fuel use, and consequent Co2 increases.
Carbon dioxide is the main greenhouse gas, its rise since the industrial revolution is clear. Burning coal, using oil and deforestation all place Co2 into atmosphere.
The other two main greenhouse gases are methane and nitrous oxide. Both gases have a much smaller presence in the atmosphere than Co2 but are much stronger greenhouse gases; methane has over 20 times the effect of Co2, whileNitrous oxide is nearly 300 times stronger.

What is the evidence of warming?

Temperature records go back to the late 19th Century and show that the global average temperature increased by about 0.6C in the 20th Century. Sea levels have risen 10-20cm - thought to be caused mainly by the expansion of warming oceans. Most glaciers in temperate regions of the world and along the Antarctic Peninsula are in retreat; and records show Arctic sea-ice has thinned by 40% in recent decades in summer and autumn. There are anomalies however - parts of the Antarctic appear to be getting colder, and there are discrepancies between trends in surface temperatures and those in the troposphere (the lower portion of the atmosphere).
How much will temperatures rise?
If nothing is done to reduce emissions, current climate models predict a global temperature increase of 1.1-6.4C by 2100. Even if we cut greenhouse gas emissions dramatically now, scientists say the effects would continue because parts of the climate system, particularly large bodies of water and ice, can take hundreds of years to respond to changes in temperature. It also takes greenhouse gases in the atmosphere decades to break down. It is possible that we have already irrevocably committed the Greenland ice sheet to melting, which would cause an estimated 7m rise in sea level. There are also indications that the west Antarctic ice sheet may have begun to melt, though scientists caution further research is necessary.

How Will the Weather Change ?

Globally, we can expect more extreme weather events, with heat waves becoming hotter and more frequent. Scientists predict more rainfall overall, but say the risk of drought in inland areas during hot summers will increase. More flooding is expected from storms and rising sea levels. There are, however, likely to be very strong regional variations in these patterns, and these are difficult to predict.

What will the effects be?

The potential impact is huge, with predicted freshwater shortages, sweeping changes in food production conditions, and increases in deaths from floods, storms, heat waves and droughts. Poorer countries, which are least equipped to deal with rapid change, will suffer most.
Plant and animal extinctions are predicted as habitats change faster than species can adapt, and the World Health Organization has warned that the health of millions could be threatened by increases in malaria, water-borne disease and malnutrition. The precise relationship between concentrations of carbon dioxide (and other greenhouse gases) and temperature rise is not known, which is one reason why there is such uncertainty in projections of temperature increase. Global warming will cause some changes which will speed up further warming, such as the release of large quantities of the greenhouse gas methane as permafrost melts. Other factors may mitigate warming; it is possible that plants may take more CO2 from the atmosphere as their growth speeds up in warmer conditions, though this remains in doubt. Scientists are not sure how the complex balance between these positive and negative feedback effects will play out.
What don’t we know?

We don’t know exactly what proportion of the observed warming is caused by human activities or what the knock-on effects of the warming will be.

What about the sceptics?

Global warming “sceptics” fall into three broad camps: those who maintain temperatures are not rising those who accept the climate is changing but suspect it is largely down to natural variation those who accept the theory of human-induced warming but say it is not worth tackling as other global problems are more pressing.Nevertheless, there is a growing scientific consensus that, even on top of the natural variability of the climate, something out of the ordinary is happening and humans are to blame.
THE GREAT MELTDOWN

The Arctic, one of the most forbidding environments in the world, is home to the polar bear. During the summer, these animals roam this region on large chunks of floating ice, drifting for hundreds of miles. This is how they find mates and hunt for seals, fattening themselves to prepare for the severe winter. If these palettes of ice did not exist, the polar bear would not survive.


Within the past three decades, more than one million square miles of sea ice?an area the size of Norway, Denmark and Sweden combined - has vanished. Presently, ice at the southern Arctic region of the polar bear's range is melting about three weeks sooner than has previously been the case. This affords the bears less time to hunt, eat and store fat. Due to this early melting, the Hudson Bay polar bear population has declined by 14% during the past ten years.Some climate models predict that 50 to 60% of this vital summer sea ice will disappear by the end of this century; others predict that by just 2070, the Arctic will be completely ice-free in the summer. If this does indeed occur, the world's largest bear could become extinct.
Meanwhile, glaciers in Greenland are receding at alarming rates. Within the last five years, those along the eastern and western coasts have receded about 300 miles each. Although a total meltdown is highly unlikely, with more than one-fifth of the population living less than two feet above sea level, not much melting is required to cause significant damage.Permafrost in the Arctic region is diminishing as well. According to a report in the Geophysical Research Letters, it could shrink by 60 to 90% by 2100. A National Oceanic and Atmospheric Administration climate scientist states that this will increase freshwater runoff into the Arctic Ocean by 28%, lead to the release of large quantities of greenhouse gases from the soil, and upset ecosystems within a wide area.

THE ANTARCTIC

Huge, pristine, dramatic, unforgiving; the Antarctic is where the biggest of all global changes could begin. There is so much ice here that if it all melted, sea levels globally would rise hugely - perhaps as much as 80m. Say goodbye to London, New York, Sydney, Bangkok, Rio… in fact, the majority of the world’s major cities. But will it happen? Scientists divide the Antarctic into three zones: the east and west Antarctic ice sheets; and the Peninsula, the tongue of land which points up towards the southern tip of South America.

. “Everybody thinks that the Antarctic is shrinking due to climate change, but the reality is much more complex,” says David Vaughan, a principal investigator at the British Antarctic Survey in Cambridge, UK. “Parts of it appear to be thickening as a result of snowfall increases. But the peninsula is thinning at an alarming rate due to warming. “The West Antarctic sheet is also thinning, and we’re not sure of the reason why.” Temperatures in the Peninsula appear to be increasing at around twice the global average - about 2C over the last 50 years. Those figures are based on measurements made by instruments at scientific stations. Earlier this year, David Vaughan’s group published research showing that the vast majority of glaciers along the Peninsula - 87% of the 244 studied - are in retreat. A little under 70% of the world’s Fresh water is locked up in ice
The ice dumped into the ocean as the glaciers retreat should not make much difference to global sea levels - perhaps a few cm. More worrying, potentially, are the vast ice sheets covering the rest of Antarctica. Making temperature measurements for the continent as a whole is difficult; it is a vast place - more than 2,000km across - there are few research stations, and temperatures vary naturally by 2-3C from year to year. But measurements indicate that in the west, melting is underway. “About one-third of the West Antarctic ice sheet is thinning,” says Dr Vaughan, “on average by about 10cm per year, but in the worst places by 3-4m per year.” The rock on which the West Antarctic ice rests is below sea level - and British Antarctic Survey researchers believe the thinning could be due to the ice sheet melting on its underside. “It may be that the ocean is warming and that’s causing the ice to melt, but there may be other reasons as well; for example, there’s lots of volcanism in that area and so that could change how much heat is delivered to the underside of the ice sheet.”

THE TEMPERATE ZONES

Glaciers snake over many of the world’s high regions - the Himalayas, the Andes, the Alps, Alaska. The recent signs are that these, like the Arctic, are feeling the impact of rising temperatures. Over the last five years, various teams have reported glaciers shrinking in Peru, Kazakhstan, Nepal and Alaska. “There is a global pattern of melting in most of the world’s mountain glaciers,” says Michael Hambrey, director of the Centre for Glaciology at Britain’s University of Aberystwyth. “There are exceptions - some glaciers are advancing - but overall the state of mountain glaciers is a dramatic shrinking since the 1970s. “Some have disappeared completely, and most could be gone by the end of this century.”
Hurricanes Increasing?
The year 2005 was a record-breaking one for Atlantic hurricanes, with the most named storms, the most hurricanes and the most Category-five hurricanes occurring?with New Orleans and the Mississippi Gulf Coast being nearly destroyed by Hurricane Katrina. In terms of barometric pressure, the Atlantic Basin also experienced its most intense hurricane ever that year, Hurricane Wilma. Some studies reveal that tropical storms around the world are intensifying, with computer models suggesting a shift toward extreme intensity. A big question on many minds is, "Does the warming of the earth have a direct effect on the strength of hurricanes?" Opinions are varied.Scientists caution that one must consider questions of climate change over decades, even centuries. A particularly rough hurricane season or two cannot be blamed on global warming.Preliminary evidence suggests that, once hurricanes form, they will be stronger if the oceans are warmer. However, much uncertainty exists about whether hurricanes and other storms will become more frequent.According to the Geophysical Fluid Dynamics Laboratory, which assesses natural climate variability, "The strongest hurricanes in the present climate may be upstaged by even more intense hurricanes over the next century as the earth's climate is warmed by increasing levels of greenhouse gases in the atmosphere. Although we cannot say at present whether more or fewer hurricanes will occur in the future with global warming, the hurricanes that do occur near the end of the 21st century are expected to be stronger and have significantly more intense rainfall than under present day climate conditions." This is based upon an anticipated increase of energy from higher sea surface temperatures.

PRECIPITATION
An increase in global temperature can cause changes in the amount os precipitation. Overall, land prcipitation has increased by 2% since 1900, however, precipitation changes have been spatially variable over the last century. While there is a general increase of about 0.5-1.0%/decade over land in northern mid-high latitudes, there is a decrease pf about 0.3%/decade in precipitation in sub-tropical latitudes during the 20th century. But, the tropics appear to be getting drier.

SEA LEVEL RISE
Rises in sea levels are going to be one of the most devastating consequences of Global Warming.Rises in sea levels are predicted by the new report, threatening low-lying areas of land around the world. As the oceans warm, their waters expand, while rising temperatures also increase the melting of the ice sheets that cover Greenland and Antarctica .Both these factors contribute to rises in sea levels. In 2001, the IPCC predicted that sea levels would rise by between 9 and 88 centimetres by 2100, relative to 1990 levels. The new report says rises could range from 18 cm to 59 cm. But predictions of sea level rise are one of the most contentious areas of the report - very recent research has suggested that rises of up to 140 cm are possible. The problem is that the understanding of how warming affects Greenland and Antarctic ice sheets remains limited, and they are predicted to be the most important contributors to change. Estimates of the straightforward melting of ice are incorporated in the IPCC report. But warming may also accelerate the movement of ice in glaciers into the ocean, perhaps by meltwater lubricating the undersides of ice streams.Susan Solomon, one of the report’s lead authors, said there was no published research that quantified this effect, and so it was not included. But she added: "If temperatures exceed 1.9°C to 4.6°C above pre-industrial temperatures, and were to be sustained for thousands of years, eventually we would expect the Greenland ice sheet to melt. That would raise sea level by 7 metres."
IMPACT OF GLOBAL WARMING ON INDIA
Warming is an environmental catastrophe that is staring in the world's face. India needs to take a serious view of this impending danger which will bring about disastrous consequences for India.
The amount of greenhouse gases in the atmosphere will be doubled by 2040 and more than treble by the end of the century. Most of this century is going to witness soaring temperature, erratic weather patterns with more intense monsoons, increased cyclonic activities, severe droughts and floods, melting glaciers and rise in sea levels.
The oceanic region adjoining the Indian subcontinent is likely to warm at its surface by about 1.5-2.0 Celsius by the middle of this century and by about 2.3-3.5 Celsius by the end of the century.
Red areas indicate the shoreline andareas likely to be innudated as a resultof sea level rise.
This indication is derived from modern simulation studies. In a discussion on this issue in the Indian parliament, Minister of State in the Ministry of Environment and Forests, Shri Namo Narain Meena said that the past observations on the mean sea level along the Indian coast show a long-term rising trend of about 1.0 mm/year. The recent data suggests a rising trend of 2.5 mm/year in the sea-level along Indian coastline.
The corresponding thermal expansion, related sea-level rise is expected to be between 15 cm and 38 cm by the middle of this century and between 46 cm and 59 cm by the end of the century.
According to a study conducted by the Ministry of Environment & Forests on the impacts of climate change on various sectors including coastal zones, in the event of one meter sea-level rise, 5764 Km2 of land in coastal areas of India is projected to lose, displacing approximately 7.1 million people along with 4200 Kms of roads by the end of the 21st century. Further the coastal areas are also vulnerable to projected increase in frequency and intensity of extreme weather events like storm surges and cyclones. In the eastern coast, the vulnerable districts include Jagatsinghpur and Kendrapara in Orissa and Nellore in Andhra Pradesh and Nagapattinam in Tamil Nadu.

Himalayan glaciers ‘melting fast’
Melting glaciers in the Himalayas could lead to water shortages for hundreds of millions of people in India, Nepal and China according to the conservation group of WWF
In a report, the WWF says India, China and Nepal could experience floods followed by droughts in coming decades. The Himalayas contain the largest store of water outside the polar ice caps, and feed seven great Asian rivers. The group says immediate action against climate change could slow the rate of melting, which is increasing annually. "Yangtze and Yellow rivers are believed to be retreating at a rate of about 10-15m (33-49ft) each year.
Himalayan glaciers ‘melting fast’
"The rapid melting of Himalayan glaciers will first increase the volume of water in rivers, causing widespread flooding,” said Jennifer Morgan, director of the WWF’s Global Climate Change Programme. “But in a few decades this situation will change and the water level in rivers will decline, meaning massive eco and environmental problems for people in western China, Nepal and northern India.”
‘Catastrophe’
The glaciers, which regulate the water supply to the Ganges, Indus, Brahmaputra, Mekong, Thanlwin, Yangtze and Yellow rivers are believed to be retreating at a rate of about 10-15m (33-49ft) each year.
Hundreds of millions of people throughout China and the Indian subcontinent - most of whom live far from the Himalayas - rely on water supplied from these rivers. Many live on flood plains highly vulnerable to raised water levels. And vast numbers of farmers rely on regular irrigation to grow their crops successfully.
A study commissioned for the WWF indicated that the temperature of the Earth could rise by two degrees Celsius above pre-industrial levels in a little over 20 years.
Allowing global temperatures to rise that far would be “truly dangerous”.Nepal, China and India are already showing signs of climate change, the WWF report claims.
Nepal’s annual average temperature has risen by 0.06 degrees Celsius, and three snow-fed rivers have shown signs of reduced flows. Water level in China’s Qinghai Plateau wetlands has affected lakes, rivers and swamps, while India’s Gangotri glacier is receding by 23m (75ft) each year.
The Gangotri glaciers, which form the major chunk of Ganga water, has been retreating at the rate of 34 metre every year. It is now quite apparent that the melting glaciers are threatening the volumetric flow rate of Ganga, Brahmaputra and Yamuna which will ultimately affect the crop yield and drinking water supply.
While the sea level rise is going to affect the entire shoreline of India, a very large area of the Ganges delta will be totally submerged affecting millions. There are indication of sea level rise. Two islands in the Sunderbans area have already vanished from the map. 6,000 people had to be relocated here because there land is under water.
As the waters rise, it is expected that the entire delta region, home to the legendary Bengal tiger, will be submerged.
Scientists have already warned that global warming will reduce crop yields, spread diseases and cause loss of biodiversity and will also pose economic risks to water supplies, food production, electricity, road and rail infrastructure and coastal livelihood.
India's agriculture depends largely on the monsoons and with rainfall pattern changing, western and central areas of India could have up to 15 more dry days annually while the Northeast is predicted to have 5 to 10 more days of rain each year. Which means that the areas which are dry will become drier and wet will become wetter. There will be longer droughts in some areas which will reduce wheat and rice yield.
Farmers Suicides - Is the changing climate responsible ?
A World Bank study has claimed that climate change and farmer suicides in India are corelated. The report says that poor farmers were unable to adapt to changing climates, which forced them fall into debts. Richer farmers were not affected because they had the resources to shift to other crops that suit the changed climate pattern. According to the study, in Pennar basin of Andhra Pradesh, decrease in yield is directly related to increase in temperature.
Hydropower projects & greenhouse gas emission
Latest scientific estimates show that large dams in India ar responsible for about a fifth of India's total global warming impact. The study titled, "Methane emission from Indian Large Dams" estimates the total generation of methane from India's reservoirs could be around 45.8 million ton, more than the share of any other country in the world. These gases are produced by the rotting of the vegetation and soils flooded by reservoirs, and of the organic matter (plants, plankton, algae, etc. Large dams have been known to be emitters of greenhouse gases like methane, carbon dioxide and nitrous oxide for over a decade now.
Indian hydropower projects are already known for their serious social and environmental impact on the communities and the environment. The fact that these projects also emit global warming gases in such significant proportion should further destroy the myth.
Mumbai, Chennai risk floods: UN
Many of the world's largest cities like Mumbai and Chennai on the sea coasts and at the mouths of the great rivers face a considerable danger of being flooded due to extreme climatic events as a result of global warming, says a report.
Coastal cities are increasingly at risk from seaward hazards such as sea level rise and stronger storms induced by climate change, says a recent report released by United Nations Population Fund (UNFPA).Sea level rise, especially if combined with extreme climatic events, would flood large parts of coastal cities, says 'State of World Population, 2007'.The report adds that sea level rise would also introduce salt water into surface fresh water and aquifers, affecting cities' water supply, and modify critical ecosystems supplying ecological services and natural resources to urban areas.
The population especially when concentrated in large urban areas within rich ecological zones can be a burden on coastal ecosystems, many of which are already under stress, it added.Pointing out that the best way to prevent such a scenario would be to avoid policies that favour coastal development, it asked for a better coastal zone management.
Talking about other dangers that big cities will face due to global warming, the report says, dry cities like Delhi will face acute water crisis.In a vicious circle, climate change will increase energy demand for air-conditioning in urban areas and contribute to the urban heat island effect through heat pollution. Heat pollution, smog and ground level ozone are not just urban phenomena; they also affect surrounding rural areas, reducing agricultural yields, increasing health risks and spawning tornadoes and thunderstorms, it said.
The report further pointed out that changes in average and extreme temperatures or in intensity and length of seasons can have significant influence on things such as economic activities (for instance, tourism), productivity of workers, use of urban space for social interactions and water distribution etc.It mentioned that drought, flooding and other consequences of climate change can also modify migration patterns between rural and urban areas or within urban areas increasing the number of 'environmental refugees'.

Posted in Global Warming.

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Biodiversity - North Bengal

An Article by Mohan Pai

Biodiversity
NORTH BENGAL

North Bengal comprising the districts of Jalpaiguri, Darjeeling, Dinajpur and Cooch Behar lies at the foothill of the great Himalayas. The area covers the moist and dense riverine forests of the Bengal Dooars (Duars) and the stark foothills of the snow-capped Kanchenjunga range. The unique climatic and ecological conditions makes North Bengal an unique home for a large variety of mega-fauna & superb restricted bird species. Bhutan and Nepal are two beautiful countries having an easy access from North Bengal. Sikkim previously an independent country joined union of India later on as one of its states. All these three beautiful places are all adjacent to parts of North Bengal.

North Bengal is a term, for the parts of Bangladesh and West Bengal. The Bangladesh part denotes the Rajshahi Division. Generally it is the area lying west of Jamuna River and north of Padma River, and includes the Barind Tract. The West Bengal part denotes Cooch Behar, Darjeeling, Jalpaiguri, North Dinajpur, South Dinajpur and Malda districts together. It also includes parts of Darjeeling Hills. Traditionally, the Hooghly River divides West Bengal into South and North Bengal, divided again into Terai and Dooars regions.

Red Panda

This region comprising the state of Sikkim and the adjoining parts of North Bengal - Darjeeling and Kalimpong, is a rugged strip of vertical mountain country. Wedged between Nepal, Tibet, Bhutan, and the North Bengal Plains of India. This tiny region is just 90 km wide and 150 km deep. The grain of the country rises from near sea level to 8500 meters, in a short distance, The great Himalayan Range with its giant spurs ' Singelila and Chola, virtually enclose this region in a titanic horseshoe. Starting from the plains of North Bengal tangled interlacing ridges rise range after range to the foot of the great wall of high peaks and passes opening into Tibet, Nepal and BhutanThe climate varies between the tropical heat of the valleys and the alpine cold of the snowy regions. With rainfall averaging 348 cm, it is the most humid region of the Himalayas. Dry season is from November to April. The altitudanal zones of vegetation range from tropical, sub tropical, temperate to Alpine ' some places only 10 km in a direct line separates the palm growing valleys from perpetual snow. The varied terrain - from the pleasant humid foothill valleys below 1000 meters, to the arctic cold of the snow capped peaks up to 8000 meters, has created marked altitudinal zonation in the humidity, rainfall, climate and vegetation.

One-horned rhinoceros
THE TERAI

The Terai (”moist land”) is a belt of marshy grasslands, savannas, and forests at the base of the Himalaya range in India, Nepal, and Bhutan, from the Yamuna River in the west to the Brahmaputra River in the east. Above the Terai belt lies the Bhabhar, a forested belt of rock, gravel, and soil eroded from the Himalayas, where the water table lies from 5 to 37 meters deep. The Terai zone lies below the Bhabhar, and is composed of alternate layers of clay and sand, with a high water table that creates many springs and wetlands. The Terai zone is inundated yearly by the monsoon-swollen rivers of the Himalaya. Below the Terai lies the great alluvial plain of the Yamuna, Ganges, Brahmaputra, and their tributaries.

DOOARS

The Dooars or Duars are flood plains at the foothills of the eastern Himalayas in North-East India around Bhutan. Duar means door in both Assamese and Bengali languages and forthe Bhutanese people can communicate with the people living in the plains. This region is divided by the Sankosh river into the eastern and the western Duars consisting of an area of 8,800 square kilometer (3,400 square-mile). This region was controlled by the Kingdom of Bhutan when the British annexed it in 1865 after Bhutan War. They are now part of the Indian states of Assam and West Bengal.Many wars have been fought over them. These plains are very fertile. There are innumerable streams and rivers flowing through these fertile plains from the mountains of Bhutan. In Assam the major rivers are Brahmaputra and Manas, and in northern West Bengal the major river is the Teesta besides many others like the Jaldhaka, Torsha, Sankosh, Dyna, Karatoya, Raidak, Kaljani among others.The forested areas of Northern West Bengal present a plethora of Wildlife.This mixed dry deciduous forest land dotted with grasslands, harbors the largest diversity of mega fauna in West Bengal. A large range of foothill forest in North Bengal is called Dooars. Once the whole area was under the reign of Koch Raj. Tea Gardens, alpine landscape, transparent river, National Parks and the Wildlife Sanctuary creates a paradise. Beautiful motorable roads cut through deep forests, rich with wildlife. Mauve hills stand at the end of velvet green plains. The forests echo with the melody of birds. In between, there are fabulous wildlife sanctuaries with, log cabin lodges and valleys carpeted with tea gardens. Dooars is the habitat of the rare Toto tribes.

The most convenient entry point to Dooars is through Siliguri by road. Regular bus connections between Siliguri and most important spots in the Dooars. Also broad gauge rail connection between New Jalpaiguri and Mal, Madarihat, Nilpara, Jainti, Mainaguri, Dhupguri and Falakata. Metre gauge rail connection between Siliguri and most spots.

Dooars Jungle in North Bengal are:- Buxa, Gorumara, Jaldapara, Neora Valley, Bindu, Jaldhaka, Jhalong, Malbazar, Samsing

The state has 4031 sq. Km. of forests, under protected area network which is 34% of the State’s total forest area and 4.54% of the total geographical area. There are five National Parks, fifteen sanctuaries, two tiger reserves and one biosphere reserve. The PA network includes 1055 sq. km. of sanctuaries, 1693 sq. km. of National Parks, the balance are being represented by buffer areas of the two tiger reserves, viz. Sunderbans Tiger Reserve and Buxa Tiger Reserve.

Habitat Loss

Habitat loss has largely taken place due to human intervention and change in land use pattern. Large scale conversion of natural habitats for a variety of purposes have led to shifts in floristic pattern (like in case of weed flora) and also fragmentation and loss of natural corridors for animals, leading to man-animal conflict. After the armed conflict with China in 1962, for example, the Army has been permanently stationed in Binnaguri, which has led to loss of the elephant corridor. Similar is the case of tea gardens in North Bengal, which have also witnessed man-animal conflict after forests were clearfelled. Habitat loss has led to decline in several species, and fauna like otter, Bengal jackal, pangolin, mongoose, porcupine are among those which are not frequently sighted today. Much needs to be studied about the underlying inter-relationships between biodiversity and the anthropogenic element, to clearly establish how harm to flora and fauna as a result of human interference must be stemmed.

Tea Gardens
The jungles of North Bengal is an extremely rich biodiversity zone but today faces, a declining rhino population, political unrest in the entire zone and incidences of elephants being hit by speeding trains in their migratory corridors are some of the glaring issues. In the face of industrial resurgence, land acquisition has become a grave issue, The locals are least concerned about preserving the forest ecosystem. Efforts are on to set up a tourism development centre in the area that will hamper the forest biodiversity. Industrialisation has a considerable impact on environment. Another disturbing environmental site is the East Calcutta Wetlands that has been declared a Ramsar Heritage Site but is poorly maintained. In the tea gardens of the Dooars, huge amounts of pesticides are used that have a damaging effect on the floral biodiversity. All's not well in the jungles of North Bengal with recent incidences of loss of an increasing number of wild fauna and the major factors contributing to the depleting wildlife habitat are lack of proper administration by forest officials and hazardous methods of conservation. The North Bengal forests are reeling under severe crisis owing to the threat from the fringe populace residing in and around the plains of the Dooars. The tension brewing in the tea sector has caused misery for a huge section of locals and this is creating increased pressure on the forest resources. There are other prevailing threats that are posing a danger over a considerable period of time, including excessive grazing that has not been taken care of. The rising conflict between man and animals has placed certain prominent categories of mammalian species in jeopardy. The rapid tourist influx has also degraded the environmental scene in North Bengal since it generates a lot of non-biodegradable wastes in the hilly areas. Efficient treatment and recycling of waste will provide a source of livelihood for locals, make the environment safe and clean and will be a draw for travellers.
Dooars forest
The Forests & Protected Areas

The forests of West Bengal are classified into seven categories viz., Tropical Semi-Evergreen Forest, Tropical Moist Deciduous Forest, Tropical Dry Deciduous Forest, Littoral and Swampy Forest, Sub-Tropical Hill Forest, Eastern Himalayan Wet Temperate Forest and Alpine Forest. The state has a recorded forest land of 11,879 sq. km., of which 7,054 sq. km. is Reserved Forest, 3,772 sq. km. is Protected Forest and 1,053 sq. Km is Unclassifieded State Forest, thus constituting 13.38% of the geographical area of the state. Under the conservation and protection regime the State has one Biosphere Reserve, two Tiger Reserves, five National Parks and 15 Wildlife Sanctuaries. Four out of five National Parks are located in the North Bengal along with one tiger reserve and seven Wildlife Sanctuaries.
Elephant Country
Neora Valley National Park
The Neora Valley National Park, spread over an area of 88sq.km. in the Darjeeling district of West Bengal was established in April 1986. The park, a unique area of rich bio-diversity lies in the Himalayan foothills and is bordered on the east by Western Bhutan and the forests of Neora Valley, one of the least tracts of virgin wilderness in the country sustains a unique eco-system where tropical, sub-tropical, sub-temperate, and temperate vegetative system still harbours a wealth of flora and fauna.
Buxa National Park
The Buxa Tiger Reserve with an area of 759 sq. km was established in the year of 1982-83 at the north eastern corner of West Bengal bordering Bhutan and Assam. The core area of 315sq.kms around the Buxa Duar Fort was declared a National Park in January 1992. This park is located in eastern Dooars (rolling humid plains) at 2600 ft above sea level. The Dooars comprises of deciduous forests which are densely wooded and grasslands and is home to some of West Bengal’s most varied flora and fauna.
Singalila National Park
The vegetation of these virgin forests mainly alpine, changes with the range in altitude. The main tree species found are the Rhododendron, Magnolia, Oak, Hemlock, Silver Fir, Juniper, Mailing Bamboo, Buk, Kawla, Bhujpatra etc. Other flora includes primulas, aconitums, gentians, arisaemas and orchids adorning the forest clearings. The fauna found in the park are leopard, serow, pangolin, elephant, chinkara, red panda, barking deer etc. The park has a variety of birds such as pigeons, doves, sibia, minivet, magpie, cuckoo, hornbills, Kaleej pheasants and a large number of migratory birds.
Gorumara National Park
Gorumara National Park is located in the Dooars (rolling hill slopes) region of Jalpaiguri district in West Bengal. This small forest area famous for its natural population of the Great Indian one horned Rhinoceros was declared a wildlife sanctuary in the year 1949.
Later in the year 1992, it was established as a National Park, comprising 80 km of diverse forests.
Jaldapara Wild Life Sanctuary
The sanctuary lies amidst the idyllic surrounding created by the mysterious backdrop of the Mountains of Bhutan and the confluence of river Torsa and Malangi. The sanctuary covers an area of 100sq.km. The park is the home of several wild lives, which includes the famous one horned Indian Rhinos, Swamp Deer, wild boar, leopard and tigers. The sanctuary has the maximum number of one-horned rhino in India after Kaziranga. The park has excellent facilities for wild life enthusiasts.

Crested Serpent Eagle
BIRD HAVEN
The varied terrain - from the pleasant humid foothill valleys below 1000 meters, to the arctic cold of the snow capped peaks up to 8000 meters, has created marked altitudinal zonation in the humidity, rainfall, climate and vegetation. This factor is responsible for the great variety and abundance of the resident bird life, making this area arguably one of the richest areas of its size anywhere in the world. 527 species of resident birds have been recorded. In addition there are vagrants, and transients on migration. It is estimated that more than 30 percent of the species of the Indian Sub continent can be spotted in this region.
Lava
Lava and Neora Valley National Park are the prime birding destinations in North Bengal. Located 35 Kms from Kalimpong, it is surrounded by very large tracts of protected forests ranging in elevation between 1600 and 2400 m. There are several sites for bird watching and photography around Lava and the adjoining Neora National Park. Some of the rarities that can be found at Lava are : Satyr Tragopan, Rufous-throated and Spotted Wren Babblers, Yellow- throated Fulvetta, Ashy wood Pigeon, Red ' Faced Liocichla, Blue-fronted Robin, Long-billed thrush, Cutia, Rusty-belied shortwinged, various Laughing Thrushes ,Warblers and Sunbirds. Mallard
Death on the Tracks
There have been repeated incidents of elephant and bison deaths on railway tracks running through the forests of North Bengal. In the last seven years, 26 elephants have been killed in North Bengal. Nine elephants have been killed in the last two years alone. Most of the cases have been reported from a 100-km stretch between Alipurduar to Siliguri. The track was converted to broad gauge line in 2004 allowing an increase in train speed.
Elephant knocked down by speeding train
This stretch passes through prime protected areas like Buxa Tiger Reserve, Jaldapara Wildlife Sanctuary, Mahananda and Chapramari Wildlife Sanctuaries. There are four extremely vulnerable corridors in this stretch that are fragmented by several railway lines.Ten cases of elephant deaths have been reported from Panjhora region under Chapramari Wildlife Sanctuary, five cases from Gulma under Mahananda Wildlife Sanctuary, four cases from the Mongpong stretch under the Kalimpong division and three in the Rajabhatkhawa stretch under Buxa Tiger Reserves.What is more alarming is that there has been a sudden rise in the number of goods train in this stretch in the last two years. While restrictions on the speed limit of the train passing through the area have been imposed, the wild animals continue to be killed on these tracks. Nearly 43 km of railway tracks cut across different wildlife sanctuaries in North Bengal.
Rampant Poaching
Poaching of wild animals including leopards and tigers continues with impunity. Three leopards and a tiger were killed recently. A poacher was recently arrested with 4 leopard skins, 10 kilos of tiger bones and 16 kg. of rhino skins. International Wildlife trade is involved in poaching operations.

Leopard & Rhino skins

Major threat to forests also comes from organized gangsterism in the field of timber smuggling and poaching.

Acknowledgements: Wikipedia, West Bengal Forest Department, Dept. Of Environment, Government of West Bengal, The Telegraph, Himalayaandnorthbengal.com

Posted in North Bengal.

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The Fauna of the Northeast India

Thursday, July 3, 2008

The Fauna of the Northeast India

An Article by Mohan Pai


The Northeast India represents the transitional zone between the Indian, Indo-Malayan and Indo-Chinese biogeographic regions and is the geographical 'gateway' for much of India's flora and fauna. As a consequence, the area is one of the richest in biological values, high in endemism and holds a large number of rare species that are now under serious threat.Hotspots are areas that are extremely rich in species, have high endemism and are under constant threat due to human pressure (having lost 70% of their original habitat). The Northeast is among the 34 Hot Spots of the world, identified in India, the other being the Western Ghats.
Northeast India
One of the richest biomes of the world, high in endemism and rare species which is now under constant threat.
The Northeast India, (22-30 degree N and 89-97 degree E) spread over 2,62,379 sq.km., represents the transition zone between the Indian, Indo-Malayan and Indo-Chinese biogeographic regions and a meeting place of the Himalayan Mountains and Peninsular India. It was the part of the northward moving 'Deccan Peninsula' that first touched the Asian landmass after the break up of Gondwanaland in the early Tertiary Period. Northeast India is thus the geographical 'gateway' for much of India's flora and fauna. It is in this lowland-highland transition zone that the highest diversity of biomes or ecological communities can be found, and species diversities within these communities are also extremely high.
Hoollock Gibbon - Pic by Ritu Raj Konwar
The region is made up of eight states: Arunachal Pradesh, Assam, Meghalaya, Manipur, Mizoram, Nagaland, Sikkim and Tripura and is endowed with a wide range of physiography and eco-climatic conditions. The State of Assam has extensive flood plains, while Khangchendzonga in Sikkim stands 8586 m. tall. Cherrapunjee in the State of Meghalaya holds the record for the highest rainfall in a single month (9,300 mm) as well as the most in a year (26,461 mm) in India, while the nearby Mawsynram has the world's highest average rainfall (11,873 mm). The forests in the region are extremely diverse in structure and composition and combine tropical and temperate forest types, alpine meadows and cold deserts. There are regions, for example, in the State of Sikkim, where the faunal assemblages also change rapidly from tropical to subtropical, temperate, alpine and finally to cold desert forms.
Northeast India forms one of the major regions of tropical forests in India, especially the species-rich tropical rain forests. The tropical semi-evergreen and moist deciduous forests in the lowlands of this region extend south and west into the subcontinent, and east into Southern China and Southeast Asia. The subtropical forests of the region follow the foothills of the Himalaya to the west; also extend into Southeast China in the east. Himalayan temperate and subalpine zone forests extend from northern Pakistan and adjacent Afghanistan through Northeast India to Southwest China. This region represents an important part of the Indo-Myanmar biodiversity hotspot, one of the 34 global biodiversity hotspots recognized currently (2005). Golden langur - Pic by Arunchs
Global Biodiversity Hotspots
Norman Myers, a conservation biologist, in 1988 first identified ten tropical forest 'hotspots' characterised by exceptional levels of plant endemism and by serious levels of habitat loss. In 1990, Myers added another 8 spots to his list. Conservation International adopted Myer's hotspots as its institutional blue print in 1989, and in1996.To qualify as a hotspot, a region must meet two strict criteria: it must contain at least 1,500 species of vascular plants as endemic and it has to have lost at least 70% of its original habitat. These are the areas which are under constant threat due to human pressure. In the 1999 analysis, in all 25 hotspots were identified. A second major analysis was undertaken and the number or global hotspots stood at 34 in 2005.Overall, the 34 hots pots once covered 15.7% of the Earth's land surface. In all 86% of the hots pots' habitat has already been destroyed. The intact remnants of the hotspots now cover only 2.3% of the Earth's land surface. Over 50% of the world's plant species and 42% of all terrestrial vertebrate species are endemic to these 34 biodiversity hotspots.Among the 34 hotspots of the world, two have been identified in India - The Eastern Himalayas and the Western Ghats. These are particularly rich in floral wealth and endemism, not only in flowering plants but also reptiles, amphibians, butterflies and mammals.
The Fauna
Mammals
There appears to be a dearth of exploration and research concerning the fauna of Northeast India. The remoteness of the region, difficult terrain as well as the severe hunting pressures exerted by the people around their immediate surroundings in many parts of the region make it extremely difficult to document the fauna of the region. Primates India sustains eleven species of primates, if we follow the recent revisions in primate taxonomy.
Red Panda
It is but unfortunate that except three species, which could be considered common in Assam, they face an uncertain future in this region.
The Hoolock (Hoolock hoolock) is the only ape in India. The eastern limit for this lesser ape is Salween River in Myanmar and its range extends to Southern China. It occurs in Assam, Arunachal Pradesh, Manipur, Meghalaya, Tripura and Mizoram in Northeast India, and its continued existence in the State of Nagaland is uncertain. Despite the wide area in which the animal occurs, it has become a rare animal, all over its range. Monogamy, frugivory and adaptation to brachiation make the species highly susceptible to habitat fragmentation and degradation.

Slow Loris

Most of the tropical forests that harbour this species are subjected to slash and burn or shifting cultivation and therefore, the ape's habitat is highly degraded and fragmented. It is hunted for the pot and the belief that its flesh and blood have medicinal properties has made it a highly prized commodity. It is also highly prized in the pet trade.
The Golden Langur (Trachypithecus geei) is one of the most localized species, between Manas and Sankosh Rivers in the Himalayan foothills along the Assam - Bhutan border areas. In Tripura, one can count seven species of primates. The Phayeri's Langur (Trachypithecus phayeri) assumes high conservation significance, as this species is restricted in distribution to the State with reported existence of a few troops in North Cachar Hills of Assam, adjacent to the northern boundary of Tripura. Yet another species of particular interest is the newly designated primate species, Semnopethicus schistaceus (Nepal Langur), which is endemic to the higher elevations in Sikkim and Nepal. The Capped Langur (Trachypithecus pileatus) is also a rare animal with limited distribution in Northeast India.The Stump-tailed Macaque (Macaca arctoides) and the Northern Pigtailed Macaque (M. leonina) have sympatric distributions in Northeast India and both have become endangered. The Slow Loris (Nycticebus bengalensis) is an inhabitant of tropical forests south of the Brahmaputra River in Northeast India.

Carnivores

India harbours six largest cats of the world and the State of Arunachal Pradesh prides itself for sustaining four large cats of Asia ' the Tiger (Panthera tigris), Leopard (Panthera pardus), Snow Leopard (Uncia uncia) and the Clouded Leopard (Neofelis nebulosa). Of these, the Indian population of the Clouded Leopard is restricted to the Northeastern region. With a very long tail for balance and large paws for climbing, the Clouded Leopard is well suited for life in the canopy. It also has the longest upper canines proportional to its skull size of any cat, reminiscent of the saber-toothed cat. Despite the presence of this elusive animal in all the eight states of the region, its habitat is shrinking at an alarming rate. Vast tracts of forests, especially in the State of Arunachal Pradesh, where the animal reigns free, could remain safe for this magnificent animal, provided such forests are kept away from developmental activities, including the construction of roads. Tiger has become a very rare animal in the entire region and perhaps Assam provides the safest asylum for this large cat. The more adaptable Leopard has managed to survive in greater numbers. Little is known about the status of Snow Leopard, which ekes out a living in the high altitudinal zones of Arunachal Pradesh and Sikkim.Northeast India sustains diverse assemblages of small carnivores, and this region is perhaps the richest region for small carnivores in the entire planet.
Fishing Cat - Pic by Atin Dutt

The tiny State of Manipur, with an area of 22327 sq.km., apart from sustaining three large cats, harbours the Marbled Cat (Pardofelis marmorata), Golden Cat (Catopuma temmincki), Leopard Cat (Prionailurus bengalensis), Fishing Cat (Prionailurus viverrinus) and the Jungle Cat (Felis chaus). It also has 3 Mustelids and 7 Viverrids: Yellow-throated Marten (Martes flavigula), Ferret Badger (Melogale sp.), Hog badger (Arctonyx collaris), Eurasian Otter (Lutra lutra); and among the Viverrids, Small Indian Civet (Viverricula indica), Large Indian Civet (Viverra zibetha), Common Palm Civet (Paradoxurus hermaphroditus), Himalayan Palm Civet (Paguma larvata), Binturong (Arctictis binturong) and Spotted Linshang (Prionodon pardicolor). Binturong

Two other species of Otter, namely Smooth-coated Otter (Lutrogale perspicillata) and Small-clawed Otter (Amblonyx cinereus), known from elsewhere in India, may also occur in Manipur State, while Arunachal Pradesh and Sikkim, may have even more species of small carnivores than Manipur

The high biodiversity of small carnivores and other biota in the Northeastern States could be attributed to the wide ranging altitudinal variations that one comes across in the region and also to the heavy rainfall and humidity that triggers luxurious plant growth especially in the lower elevations. All these rare animals occupy narrow bands of forests in the hills and valleys of the region, and, living in small populations, they are extremely susceptible to habitat degradation and hunting pressures. Many of the species in lowland forests are already on the verge of extinction as these forests were the first to be occupied, altered and degraded by man. Of the Mustelids, the Ferret Badger and the Hog Badger found in the Northeastern India take the pride of place not only because of their rarity but also because of their uniqueness. The Red Panda (Ailurus fulgens) is yet another flagship species of this region, restricted to the higher altitudes.

All the bear species that occur in India are recorded from the northeastern region. Besides, Northeast India forms the western end of the range for Malayan Sun Bear (Helarctos malayanus). Bears of the lower elevations are under especially serious threats owing to habitat degradation as well as persecution by man, as the bile of the animal is considered highly medicinal.
Wild Dog or Dhole, is yet another rarity in the wilderness of Northeast India. Wild Dog found in Sikkim (and in Kumaon, Nepal and Bhutan) is considered Cuon alpinus primaevus. The Cuon alpinus adjustus found in eastern Arunachal Pradesh is considered to be the same subspecies found in northern Myanmar.

Bats and rodents

Inventories, especially for bats and rodents, are wanting from Northeast India. Though, with about 65 species, bats dominate the mammalian fauna of Northeast India, reliable information available on them is sparse. The Wroughton's Free-tailed Bat (Otomops wroughtonii), recorded from the Barapede cave in North Kanara district of Karnataka was believed to be a narrow endemic. However, now it has now been reported from Siju Cave in South Garo Hills of Meghalaya in Northeast India, and also from Cambodia. The Government of India has listed the Wroughton's Free-tailed Bat in Schedule I of Wildlife (Protection) Act, 1972. The Namdapha Flying Squirrel (Biswamayopterus biswas) is a little known narrow endemic found in the State of Arunachal Pradesh. The Namdapha National Park, one of the largest parks in the country Holds a number of other squirrels - Hairyfooted Flying Squirrel (Belomys pearsoni) and Particoloured Flying Squirrel (Hylopetes Alboniger), Orange-bellied Himalayan Squirrel (Dremomys lokriah), Malayan Giant Squirrel (Ratufa bicolor), Hoary- bellied Squirrel (Callosciurus pygerythrus) and Himalayan Striped Squirrel (Callosciurus macclellandi) could all be seen in this park.
The Hispid Hare (Caprolagus hispidus) is yet another habitat Specialist that is facing the threat of elimination from the region.

Ungulates

Of the 25000 wild elephants in India, about 33% are found in Northeast India. In fact, Assam alone accounts for more elephants than Myanmar, Thailand, Indonesia or any other country in Asia. However, elephant population is dwindling sharply in Northeast India. There has been a very serious decline in the elephant population in central Assam whereas those in the southern parts have virtually vanished. The population has seriously declined in Tripura and there are only a few elephants left in Manipur and Mizoram and probably none in Nagaland. Heavy loss of prime elephant habitat is an issue of great concern as loss of elephant habitats heralds doom for smaller creatures as well.Great Indian Rhinoceros (Rhinoceros unicornis) is the largest of all the rhinos now inhabiting the world. In Northeast India this species is now restricted to Kaziranga, Pabitora and Orang in Assam. The population at Manas in Assam is believed to have been decimated in recent years. Historical records suggest that both the One-horned Javan Rhinoceros (Rhinoceros sondaicus) and the Two-horned Sumatran Rhinoceros (Didermocerus sumatrensis) were once found in parts of Northeast India. Both the species are now extinct from the region.The Water Buffalo (Bubalus bubalis) found in Northeastern India is faced with a genetic problem. A large number of domestic buffalo, most of them genetically a 'cocktail species' bred by man, are grazed in the habitats of the wild buffalo and the interbreeding revitalizes the domestic strain but has the opposite effect on the wild strains. The Banteng (Bos javanicus) occurred in the hills of Manipur as late as 1990s, but is now not reported from the State.

Sangai

The Brow-antlered Deer (Cervus eldi eldi) is endemic to the State of Manipur. Sangai, as the deer is locally known, is one of the rarest and the most localized subspecies of deer in the world. Reported to be extinct in 1951, this deer was subsequently discovered in a small pocket on the floating mats of vegetation, called 'phumdi' in the Loktak Lake. Though just fourteen heads were counted in the first aerial census in 1974, their number has steadily increased since then. Loktak Lake is now a RAMSAR site and there are now about 150 individuals in this undoubtedly the most fragile habitat of the region. The Swamp Deer (Cervus duvauceli) found in Assam is yet another Cervid of great conservation significance. The Serow (Capricornis sumatraensis), Goral (Naemorhedus goral) and Red Goral (Naemorhedus baileyi) are three other species that are of great conservation significance in the region. The Pygmy Hog (Sus salvanius) is the smallest and the rarest wild suid in the world, and only a few isolated wild populations survive in Northeast India.

Other Mammals

In the State of Sikkim, at the heights above 3600 m. where the tree line ends, the alpine Scrub and grasslands support some of the most unique fauna of the planet, the Yak (Bos grunniens), The Tibetan Wild Ass (Equus hemionus kiang), Markhor (Capra falconeri), Ibex (Capra ibex), Great Tibetan Sheep (Ovis ammon hodgsoni), Blue Sheep (Pseudois nayaur), are only to name a few.It is recorded that the Chinese Pangolin (Manis pentadactyla) ranges westwards through Assam and the Eastern Himalaya to Nepal, Myanmar and South China. However, the Indian Pangolin (Manis crassicaudata) is also reported from the Indo-Myanmar border areas and this confirms that both species exist in Northeast India.
Ganges River Dolphin (Platanista gangetica) is yet another mammal of great conservation importance that can still be found in the Brahmaputra River in Northeast India.

Birds

Northeast India supports some of the rarest, least known and most sought-after birds of the Oriental Region. This region perhaps supports the highest diversity of bird species in the Orient. More than 400 species of birds are recorded from Kaziranga National Park alone in Assam and although not thoroughly explored, the State of Arunachal Pradesh has a record of 665 species of birds.

Crested Serpent Eagle

Though birds are one of the most studied organisms, there is acute paucity of information concerning the avian fauna of the region and at the same time, new species are continuously being added to the region's list. Poor dispersers such as babblers and laughing thrushes are important forest understorey passerines in the rainforests and they have diversified locally and contribute significantly to the diversity of the avifauna of Northeast India (they constitute about 10% of the Eastern Himalayan avifauna). The Brown-capped Laughing Thrush (Garrulax austeni) is only known from the hills south of the Brahmaputra in the North Cachar Hills (Assam), Nagaland, Manipur and Mizoram. The bird's habitat consists of oak and rhododendron forest, secondary growth and bamboo from 1200 m. to 2700 m.The Elliot's Laughing Thrush (Garrulax elliotii) and Brown-cheeked Laughing Thrush (G. henrici) are two species that have been recently added to the region's list, from Arunachal Pradesh. Both these species had previously been recorded only in China. The Assam Plains and the Eastern Himalaya have been identified as Endemic Bird Areas by Bird Life International. The Assam Plains holds Blackbreasted Parrotbill (Paradoxornis flavirostris) and the Marsh Babbler (Pellorneum palustre) and in this region one can always hope to rediscover the Manipur Bush Quail (Perdicula manipurensis). The Eastern Himalayan part of Northeast India supports 22 restricted-range bird species (those that have a total world range of less than 50,000 square kilometres); of these 19 are endemics Perhaps, with the exception of Manipur Bush Quail (Perdicula manipurensis), which is considered to be extinct, one could perhaps hope to see all the other 21 bird species in Northeast India, which holds one of the largest concentrations of globally threatened birds in Asia. The relatively high species richness of birds at high altitude zones in the region, compared with other taxa, is also notable.
White-winged Wood Duck (Cairina scutulata) is perhaps the rarest duck in the world today and this bird occupies the pride of place among the avifauna of the region. However, extensive destruction of its natural habitat ranging from Assam and Arunachal Pradesh to Java has pushed this species into isolated groups of small populations. Greater Adjutant (Leptoptilos dubius) is a globally threatened bird with the majority of the world's population now found in Assam. Spot-billed Pelican (Pelicanus philippensis), Blacknecked Stork (Ephippiorhyncus asiaticus), Lesser Adjutant (Leptotilos javanicus), and Pale-capped Pigeon (Columba punicea), are only to name a few of the globally threatened birds found in the region. Swamp Francolin (Francolinus gularis), found in Northeast India, is endemic to the Indian subcontinent. The Bengal Florican (Houbaropsis bengalensis) is one of the rarest bustards in the world. Manas National Park has the largest population of this bird in the world. Hornbills, too, exhibit high species richness in northeast India, found in few places elsewhere in the world.Lesser Fish Eagle (Icthyophaga humilis) is the rarest of the fish and sea eagles, and there are reports of its sightings in Namdapha in Arunachal Pradesh. Jerdon's (Blyth's) Baza (Aviceda jerdoni) is a very rare resident bird of India, and the chances of sighting this globally endangered bird are bright in evergreen forests of Northeast India. Burmese Hobby (Falco severus severus) is an uncommon breeding resident of Northeast India, south of Brahmaputra River. Pied Falconet (Microhierax melanoleucos) is also one of the rarest Indian raptors found in Northeast India. The Sclater's Monal (Lophophorus sclateri) and Blyth's Tragopan (Tragopan blythii) are among the rare and beautiful pheasants that live in a limited range of the eastern Himalaya. With the exception of a status survey conducted on the Blyth's Tragopan in Blue Mountain National Park in Mizoram, which is recorded to harbour 38 birds, no detailed study has been carried out to date on these two species in any part of their range. It is even now a custom in certain hill areas of the region to present a Tragopan or Mrs. Hume's Pheasant (Syrmaticus humiae) to a visiting dignitary (to be slaughtered and eaten). All the pheasant species that occur in this region are to be considered endangered. Ward's Trogon (Harpactes wardi) is yet another beautiful resident bird reported from Arunachal Pradesh and Sikkim. The bird is sighted in the State of Manipur also.Buff-throated Partridge (Tetraophasis szechenyii) is a rare resident of rocky ravines and Rhododendron thickets in the subalpine zone of central Arunachal Pradesh. At higher altitudes in Sikkim, birds include Snow Partridge (Lerwa lerwa), Blood Pheasant (Ithaginis cruentus), Himalayan Monal (Lophophorus impejanus) and Ibisbill (Ibidorhyncha struthersii). The highly endangered Rufous-vented Prinia of the eastern population, regarded as a separate species 'Swamp Prinia' (Prinia cinerascens), is reported from the Pobitora Wildlife Sanctuary in Assam. Beautiful Nuthatch (Sitta formosa) is a resident of primary forests of Northeast India. The Khasi Hills Swift (Apus acuticauda) is one of the world's rarest and least known Apus species, and is known only at its breeding cliff near Cherrapunjee in Meghalaya from late February to the end of April. The movements of this endemic bird outside the breeding period are largely undocumented. Pink-headed Duck (Rhodonessa caryophyllacea), as its local name 'nganu koknganbi' suggests that it was once a common bird in Manipur and elsewhere in Northeast India. It is now extinct. India's only Buff-throated Warbler was collected from Meghalaya in 1953, and no further records exist in India. Rufous-bellied Eagle (Hieraetus kienerii) found in this region is also probably extinct. Burmese Peafowl (Pavo muticus), found in the Indo-Myanmar border areas, is also seldom sighted in the region.Though there is less information about the migration routes of birds in Northeast India, the Brahmaputra River and her tributaries are thought to form a flyway for birds from Northeast Asia.

Lower Vertebrates

The reptilian fauna of northeast India has the greatest affinity to the Oriental, Indo ' Malayan and Indo-Chinese regions. According to existing records, there are 137 species of reptiles in Northeast India, but in reality there could be many more species that are yet to be identified. Python

With better sampling and studies on the herpeto-fauna, the number of species is expected to change considerably for each of the states and for the region as a whole.Among the component of reptilian fauna, the Gharial (Gavialis gangeticus) found in Brahmaputra River is of great conservation significance. Northeast India has the highest diversity of turtles. Of the 26 species of non-marine chelonians reported from India, 19 are found in this region. However, the information on this group of reptiles is also quite inadequate as most of the available records concerning the known species available are from the Brahmaputra Plain and adjoining areas in lower Eastern Himalaya. The hill states, especially south of Brahmaputra basin, viz., Nagaland, Manipur, Tripura, Meghalaya and Mizoram, remain poorly studied. As recently as 2000, a chelonian species -Amyda cartilaginaea, was reported from Mizoram as a first record for India. Asian Roofed Turtle (Kachuga sylhetensis) is endemic to the region. The Elongated Tortoise (Indotestudo elongata), Asian Brown Tortoise (Manouria emys), Narrowheaded Softshell Turtle (Chitra indica) and Indian Flapshell Turtle (Lissemys punctata) are very rare among the recorded species.

The lizard fauna of Northeast India is profoundly influenced by the Indo-Chinese connection. Published records indicate 20 lizard species from the State of Assam, and 18 species from the tiny state of Manipur. Of the three species of Monitor Lizards found in the region, Varanus flavescens is listed in Schedule I under Wildlife (Protection) Act, 1972. The Tokay Gecko (Gekko gekko) is the largest gecko alive today and is found in northeast India.
The Burmese Glass Snake (Ophisaurus gracilis) is yet another interesting reptile of Northeast India.Fifty eight species of snakes have been recorded in Assam and 34 from Manipur. Python reticulatus, the largest snake in India, is found in northeast India and Python molurus bivittatus is known from a single specimen from the Arunachal Pradesh, which was a first record for India. One can expect to sight both the snakes in 'Mouling National Park' in the Upper Siang District of Arunachal Pradesh. King Cobra (Ophiophagus hannah) is the most awe-inspiring reptile of the region. Typhlops jerdoni, T. tenuicollis, Stoliczkaia khasiensis, Elaphe mandarina, Oligodon melazonotus, Xenochrophis punctulatus, Bungarus bungaroides, Trimeresurus jerdoni are just a few examples of very elusive and rare snakes of Northeast India.

Amphibians

Existing records indicate the presence of 64 species of amphibians in the Northeast India but this figure again could be a gross underestimate as they are a poorly studied group in Northeast India. A survey of amphibians conducted in the State of Nagaland from 1998 to 2002 has resulted in 19 species as new records for the State and 5 species (Megophrys wuliangshanensis, M. glandulosa, Amolops viridimaculatus, Rana humeralis and Rhacophorus gongshanensis) as new records for India. Only four species of caecilians, Ichthyophis garoensis, Ichthyophis hussaini, Ichthyophis sikkimensis and Gegeneophis fulleri are known from Northeast India. The Himalayan Newt (Tylototriton verrucosus) deserves a special mention, as it is the only species of Salamander known from India, occurring in Manipur, Khasi Hills and Sikkim. Hitherto, they were little affected by man, but use of the pesticides in paddy cultivation is posing a threat to the species.

Fish Fauna

Fishes are the most ancient and numerous of vertebrates. Over 24,000 species of fishes are known in the world, and ' a majority of these are from warm tropical waters. Northeast India is exceptionally rich in freshwater fishes, and it is heartening to note that the region has been extensively surveyed, and accounts for 236 species. From the State of Manipur alone, 167 species of freshwater species belonging to 11 orders, 31 families and 84 genera are recorded. The fish fauna of Loktak Lake in Manipur comprises 64 species. Two of these species, Monopterus albus and Osteobrama belangeri are restricted in their distribution to the Yunan State of China, Myanmar, and in India only to the State of Manipur. The Loktak Lake also serves as the breeding ground for several species of migratory fishes eg. Labeo dero, L. bata and Cirrhinus reba.

Sone Lake (12.5 km long and 3.0 km. wide), is one of the biggest tectonic lakes in Assam. It sustains 75 species of fishes under 24 families and 49 genera and of which, 20 species are widely distributed while 8 species are native to Northeast India. Despite a very high diversity of fresh-water fishes, Northeast India does not have many endemic species (the fish fauna of India contains 2 endemic families, both of which are absent from the region).

Invertebrates

The Biodiversity Strategy and Action Plan for Northeast Ecoregion states that 3,624 species of insects and 50 molluscs are recorded from the region. Butterflies and moths are by far the best-studied invertebrate organisms in Northeast India, and the region contributes the maximum number of species for the group in the country. A decade ago, 689 species of butterflies were recorded from the State of Sikkim. An ecological study on Mammals, Birds, Herpeto-fauna and Butterflies carried out in Teesta Basin, Sikkim, revealed nearly 350 species of butterflies in altitudes less than 900 m. (In the study area the family Nymphalidae is recorded to be the most species rich forming 50% of the observed species, followed by Lycaenidae and Pieridae (17.2% each). Papilionidae and Hesperiidae have relatively low species richness, forming only 8.6% and 7.0% of the species, respectively).

Atlas Moth

As species richness in the study area was found to be far greater than that reported earlier, especially at higher altitudes, this particular study highlights the importance of altitudinal gradients in the distribution of butterflies, and in their conservation. One of the largest known tropical Lepidoptera is the Atlas Moth (Attacus atlas), is not uncommon in many parts of Northeast India. Princeps polyctor ganesa, which occurs in Northeast India, is one of the most beautiful butterflies in the country, while, -Erysmia pulchella and Nyctalemon patroclus are very beautiful moths that occur in the region. It is pertinent to add that sericulture is an age-old occupation for some people in states like Assam and Manipur, especially in the 'Loi' community in Manipur who have rendered the skill of silkworm rearing and silk weaving to art form.Honey bees, render very valuable ecological services like pollinating wild and cultivated plant species apart from producing honey, and their advanced eusocial behaviour has always been a source of fascination for man. Four indigenous species of honey bees are recognized from India: Apis cerana, A. dorsata, A. florae and A. andreniformes. Of these, Apis andreniformis is only known from a few specimens collected from Northeast India where the species is exceedingly uncommon. It is an unfortunate practice that people in certain parts of Northeast India not only consume the honey and larvae of this insect, but also fry and eat the honey bees themselves.

Fast disappearing forests
& species of the Northeast India

The primary vegetation in extensive areas of the Northeast India has been disturbed and modified and in some places destroyed by seismic activities, frequent landslides and resultant soil erosion. While these natural causes have contributed only marginally to the change in vegetation type, it is the activity of Man that has led to the irreversible transformation in the landscapes and has resulted in colossal loss of biodiversity in the entire region. Human influences have pushed many species to the brink of extinction and have caused havoc to natural fragile ecosystems. Such devastations to natural ecosystems are witnessed almost everywhere in the region and is a cause of great concern.Northeast India has 64% of the total geographical area under forest cover and it is often quoted that it continues to be a forest surplus region. However, the forest cover is rapidly disappearing from the entire region. There has been a decrease of about 1800 sq.km. in the forest cover between 1991 and 1999 (F.S.I., 2000). More worrisome still is the fact that the quality of the forest is also deteriorating, with the dense forests (canopy closure of 40% or more) becoming degraded into open forest or scrub. Though there is a succession of several edaphic formations, a vast area of land has already been transformed into barren and unproductive wastelands. This being the case, the statistics of 'more than 64 % of the total geographic area in this region under forest cover' could be misleading. For example, though the forest cover in Manipur extends to 78% of the total geographic area, only 22% of forest area is under dense forest cover and the rest has been converted to open forests. Except in the Brahmaputra and Barak valleys of Assam where substantial areas are under agriculture, little of the land is available for settled cultivation. Hence, shifting agriculture or slash-and-burn agriculture is the major land use in Northeast India and extends over 1.73 million ha (F S I, 1999). Different agencies have come up with different figures concerning the total area under shifting cultivation (jhum) in the region. What is not disputable is that with an ever shortening jhum cycle, the other human influences have caused environmental degradation with disastrous consequences.Though Northeast India is predominantly mountainous, the region is very rich in aquatic ecosystem diversity. A large number of bheels, ponds and marshlands in the lowlying and floodplain areas of Assam, Arunachal Pradesh and Tripura represent the diversity in lentic ecosystems. However, deforestation and the resultant loss of soil, especially in the hill areas, are leading to increased siltation of rivers and streams. The deep pools that are the favoured habitats of many species, are rapidly becoming shallow and choked with silt, leading to a decline in habitat. At the same time, swamps, marshes, and other wetlands are increasingly being reclaimed for urban and agricultural expansion.The forests of Assam once acted as a sponge, absorbing the tremendous impact of the monsoons. The natural drainage of the vast northeastern Himalaya is channelled through Assam and with the loss of thick forest cover, Brahmaputra, one of the largest and fastest flowing rivers of the subcontinent is creating havoc in the State. Floods that have devastating effects are now common to Northeast India and protecting the forests is a difficult problem.
A vast majority of the indigenous inhabitants of this region are meat-eating in their food habits and almost all communities have expert hunters, trappers and fishermen. One can find bones, skulls and hides of large and small mammals in tribal huts. It should be noted that though the traditional practices of trapping, snaring etc of animals are carried out in very remote areas, in most parts of Northeast India shooting wild animals with guns is prevalent, giving very little chance for the denizens of the forests to recoup from such pressures. Besides, certain meat is valued as medicinal and such animals are persecuted as great efforts are made by a few individuals to seek such animals and bring back home their body parts. In the past, the hunting/trapping was done with considerable prudence with many taboos and restrictions. For example, the Anaal Naga in Manipur did not consume turtle or tortoise meat. The Maram Naga did not eat pork and the Thangkhul Naga did not eat any member of the cat family. Unfortunately, such taboos no more hold any sway among the people now. It is a great tragedy that in many parts of Northeast India some people poison the rivers, streams and other water bodies to get good catches of fish. Apart from using plant poisons, lime, DDT, copper sulphate (Cu SO4) and, other synthetic chemicals are being used for fishing. Some are even using dynamite and gelatine sticks for the same purpose. This has serious ill effects on the entire aquatic ecosystems. Fish stocks are being entirely wiped out; several species of amphibians, birds and other fish predators are also being affected in the process; and nothing is known as to what happens to human beings on consuming such poisoned fishes.Northeastern India is often called India's forgotten corner and it was perceived that the remoteness of the place has helped preserve its biodiversity. However, the penetration of roads into interior areas has already exposed the local populace to market economy, unscrupulous urban traders and middlemen in most parts of the region. A series of proposed dams in the Northeastern region may lead to submergence of vast tracts of rainforests. Comprehensive environmental impact assessments, which are mandatory as per the law of the land, reveal the possible danger that these projects pose to the biodiversity of the region. The impregnability of certain forests in Northeast India is a source of only some protection, as this factor itself offers some hope for the survival of many species.

Source: "Biodiversity of Northeast India - An Overview"
by V. Ramakantha, A. K. Gupta and Ajith Kumar

Posted in Biodiversity - Northeast.

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Kodagu (Coorg)

An Article by Mohan Pai
KODAGU (Coorg)

Nisargadhama, Kodagu - Pic by Mohan Pai
The land of Coffee, Pepper, Honey
& Oranges with an alpine landscape, Kodagu is called the "Scotland" of India.

"Standing on a bright November morning on the summit of the Brahmagiri near Tala-Kaveri the observer is filled with delight and admiration of the grand and picturesque view, that opens out before him. As far as the I can to the north-west and south-east it beholds ridge after ridge of grassy forest-clad hills, now gently sloping down in gentle wavy lines, now bold and abrupt, raising their steep summits into the clear, blue air. Kudremukh-betta, the far seen landmark of the mariner, bursts into view from Canara; the Bettadapur and Chamundi hill in Mysore, the Wayanad mountains of Malabar and Dodda-betta of the distant Nilgiris are clearly visible, and in the west at a distance of about 30 miles below the steep precipices of the Ghats the coast-line of North Malabar and South Canara, intersected by broad, bright, serpentine rivers and the dark-blue Indian Ocean with its sailing craft fascinate the spectator."
"Coorg itself is covered by forest, save here and there where the clearing of a coffee plantation or ragi patch or the park-like open glades (Bane) with their beautiful green sward and varied foliage afford a charming variety of landscape. In vain, however, the eye searches for towns and villages, churches and castles or other indications of civilized life. Only here and there in nooks and corners, ensconced amongst groves and clusters of cultivated trees and betrayed by wreath of smoke, can one discover the thatched houses of the Coorgs, who love solitary abodes near their fields."
' G. Richter in Gazetteer of Coorg (1870 edition)
Landscape
Kodagu has all the characteristics of an alpine landscape and is called "Scotland of India". Kodagu in Kannada means "steep mountains". Over 4,000 sq km of undulating topography carpeted in just about every green shade possible, Kodagu is really a fascinating dreamland.
Kodagu is the smallest district of Karnataka State in Southern India. It is also known by its anglicised name of Coorg. It occupies about 4,100 square kilometers (1,580 miē) of land in the Western Ghats of Southwestern Karnataka. The district is bordered by the Dakshina Kannada District to the Northwest, the Hassan District to the North, the Mysore District to the East, the Kannur District of Kerala State to the Southwest, and the Wayanad District of Kerala to the South.
In Kodagu, the Western Ghats' main range extends from Subramanya in the north-west to the Brahmagiris in the south, the distance being a wide green swathe spanning over 100 km.

Kodagu is on the eastern slopes of the Western Ghats. It is a hilly district with the lowest elevation in the district at 900 meters (2,900 ft) above sea-level.The main river in Kodagu is the Kaveri (Cauvery) River. The Kaveri starts at Talakaveri, located on the eastern side of the Western Ghats, and, with its east-flowing tributaries - Hemavati, Harangi and Lakshmitirtha, drains the greater part of Kodagu. Payaswani and Bara Pole are the two west-flowing rivers. In the rainy season, particularly during the southwest monsoons from June to the end of September, the currents are violent and rapid. In July and August, rainfall is intense, and there are often rain showers into November. Yearly rainfall may exceed 4,000 millimeters (160 in) in some areas. In dense jungle tracts, rainfall reaches 3,000 to 3,800 millimeters (120 to 150 in) and 1,500 to 2,500 millimeters (60 to 100 in) in the Bamboo District to the west. Kodagu has an average temperature of 15°C (59°F), ranging from 11 to 28°C (52 to 82°F), with the highest temperatures occurring in April and May.Much of the district is under cultivation: characteristically, rice fields are found on the valley floors, with plantation crops under tree cover in the surrounding hills. The most common plantation crop is coffee, especially C. robusta, with C. Arabica. Many other crops are also grown, including black pepper, para rubber, teak, and cocoa. There are also large areas of natural forest, especially in the forest reserves in the south and east.
Brahmagiris with typical paddy fields - Pic by Mohan Pai
The country forms a portion of the Western Ghats with the high range running north-south along the western side of the district. The range has a bulging towards west at Brahmagiri. The prominent peaks are Pushpagiri(1715 m), Kote Betta, Nishani Motte, Tumbe Male. Tadiandamol (1750 m, highest), Soma Male and Brahmagiri (Davasibetta) the birth place of Lakshmanathirtha river. High hill tops are generally grassy with valley of dense mixed jungles and cardamom plantation. Low hill ranges are generally under cultivation, teak plantation or dense mixed jungle.
Bisale Ghat - Pic by Mohan Pai
Kodagu is a rural region with most of the economy based on agriculture, plantations and forestry, and is one of the more prosperous parts of Karnataka. This is due primarily to coffee production and other plantation crops.Rice and other crops are cultivated in the valleys.In recent years tourism has also begun to play a role in the economy. Eco-tourism, such as walking- and trekking-tours, take advantage of plantation buildings converted into guest-houses.The Kodavas were the earliest agriculturists in Kodagu, living in that place for centuries. Nayakas and Palegaras like Chengalvas and Kongalvas ruled over them. Over centuries several South Indian dynasties, like the Kadambas, the Gangas, the Cholas, the Chalukyas, the Rastrakutas, the Hoysalas,and the Vijaynagar Rayas, ruled over Kodagu.Kodagu was a kingdom ruled by the Hoysalas from the 11th to the 14th century CE, and thereafter by the Vijayanagar and the Chengalvas. The Haleri Rajas of Kodagu ruled from the 17th to the 19th century. In between the Mysore Sultans invaded and ruled Kodagu for a couple of decades in the eighteenth century.The British annexed Kodagu in 1834, after dethroning Chikkaveerarajendra the last Haleri Raja. The province was administered by Chief Commissioners until Indian Independence in 1948.
Madikere Town - Pic by Mohan Pai
The principal town, and District Capital, is Madikeri, or Mercara, with a population of around 30,000. Other significant towns include Virajpet (Viraranjendrapet) and Somwarpet. The district is divided into the three administrative Talukas (Divisions) of Madikeri, Virajpet and Somwarpet.

Tribal Population

Kodagu has been inhabited by various tribes for centuries although some have immigrated at more recent period from the adjoining areas of Kerala. The more prominent tribals are: Binepadas, Airis, Madivalas, Kavatis, Nainda, Koyuvas, Kudiyas, Medas, Holeyas, Pales, Maleyas, Kurubas, Jenu-Kurubas, Betta-Kurubas, Adias, Yeravas and Kaplas.

Kodagu has approximately 65 per cent of its geographical area under tree cover, making it one of the most densely forested districts in the country.

Flora

The flora of the jungle includes Michelia champaca (Champak), Mesua (Ironwood), Diospyros (Ebony and other species), Toona ciliata (Indian mahogany), Chukrasia tabularis, Calophyllum angustifolium (Poon spar), Canarium strictum (Black Dammar), Artocarpus, Dipterocarpus, Garcinia, Euonymus, Cinnamomum, Myristica, Vaccinium, Myrtaceae, Melastomataceae, Rubus (three species), and a rose. In the undergrowth are found cardamom, Areca, plantains, canes, wild Black pepper, tree and other ferns, and arums.In the forest of the less thickly-wooded bamboo country in the west of Kodagu the most common trees are the Dalbergia latifolia (Black wood), Pterocarpus marsupium (Kino tree), Terminalia tomentosa (Matthi), Lagerstroemia parviflora (Benteak), Anogeissus latifolia (Dindul), Bassia latifolia, Butea monosperma, Nauclea parvifiora, and several species of Acacia. Teak and Sandalwood also grow in the eastern part of the district.

The rich floristic diversity of Kodagu consists of more than 8.8% of floral diversity of Karnataka 1332 species. Kodagu has 65% of its Geographical area under the tree cover. More than 50% of the plants have medicinal value. Nearly 53% of the flora of Kodagu is endemic. It has been confirmed in the study that the district is also a hotspot of endemic orchids found mainly in the Thadiandamol.

Devarakadu (Sacred groves)

There is a large number of sacred groves in Kodagu (about 1214), which are pockets of forests, ear-marked as bio-buffers, to worship various deities. This has led to some excellent field ecological research, as well as documentation of people's knowledge and perception of nature. This has motivated local public to form their own committees to preserve and protect these valuable pockets of forests.

Coorg & Coffee

Coffee estates were first started in Kodagu in 1854 by the Britishers.Coffee plantations became characteristic of the district in the 20th century, situated on hillsides too steep for growing rice, and taking advantage of shade from existing forests. Today coffee is a major cash crop. Nearly a third of coffee production of India comes from Kodagu. The most common plantation crop is coffee, especially C. robusta, with C. arabica grown in some parts of southern Kodagu. Over 77,000 hectare of land in Kodagu is under coffee cultivation as against only 40,000 hectares under paddy cultivation. There is a Coffee Research sub-station at Chettali.


Protected Areas

To the North West of the source of river Cauvery is Tala Cauvery wild life sanctuary. The other sanctuaries in kodagu are the Pusphagiri wild life sanctuary, Brahmagiri wild life sanctuary, Nagarhole national park which is a protected area of world repute and also situated in Kodagu which is a part of the Nilgiri Bio-Sphere Reserve. The hills and valleys are protected areas covered with forest land are famous habitats of tiger, elephants, panther, leopard, sambar, wild boar, lion-tailed macaque, wild dogs, bison, deer and many others animals. Kodagu is also rich in avifauna with about 305 listed species. Some rare birds too make their home in these forests. Famous amongst them are the grey horn bill and the great pied horn bill. Nearly 25 varieties of snakes including four poisonous ones, hamadryad, cobra, krait and viper with many species of butterflies and moths are found distributed all over Kodagu.

Nagarhole National Park

Nagarhole National Park, also known as ‘Rajiv Gandhi National Park,’ is located 94 km from Mysore. It is spread between Kodagu and Mysore districts. Located to the northwest of Bandipur National Park, Kabini reservoir separates the two. The exclusive hunting reserve of the former rulers of Mysore, the park has rich forest cover, small streams, valleys, and waterfalls. In 1975 its area stretched to 575 kmē.The place derives its name from Kannada, Naga meaning snake and hole referring to streams. Set up in 1955, it is one of the best-managed parks in the country, with the office of the Deputy Conservator of Forests situated in Hunsur, about 47 km away from Nagarhole. The climate is tropical; summer is hot and winter is pleasant. The park boasts a healthy tiger-predator ratio, and tiger, bison, and elephant are much more populous here than in Bandipur.The park is part of the Nilgiri Biosphere Reserve. The Western Ghats, Nilgiri Sub-Cluster (6,000+ kmē), including all of Nagarhole National Park, is under consideration by the UNESCO World Heritage Committee for selection as a World Heritage Site.

Terrain

With the backdrop of misty Brahmagiri hill ranges and it's thickly forested and gently undulating terrai, criss-crossed with many rivers and streams, Nagarhole is naturalists dreamland. Masal Betta (959 m) located on the south-west fringes of the park is the highest point, and Kabini River is the lowest point at 701 m above sea level. Mostly moist mixed deciduous forest (Tectona grandis, Dalbergia latifolia) in the southern parts, dry tropical forest (Wrightia tinctoria, Acacia) towards the east, and Sub mountain hill valley swamp forest (Eugenia).

Gaur
Mammals:
Elephant, Jackal ,Tiger, Panther, Gaur, Muntjac, Sambar, Spotted deer, Mongoose, Civet cat, Hyena, Dhole, Wild Boar, Striped Hyena, Sloth Bear, Leopard Cat, Jungle Cat, Mongoose, Muntjac, Mouse Dear, Slender Loris, Malabar Giant Squirrel, Porcupine, Pangolin,Reptiles: Marsh Crocodile, King Cobra, Krait, Python, Viper, Tortoise, Monitor Lizard ,Toads etc.The main trees found are Rosewood, Teak, Sandalwood and Silver oak.

Pushpagiri Wildlife Sanctuary
This sanctuary is located in the northern part of Kodagu and has some attractive scenery. It is home to rare and endangered birdlife and is designated as one of the important bird areas of the world. The rich Kadamakkal reserve forest is a part of the sanctuary. Pushpagiri is the highest peak in it. Kumaraparvat (Kumaraparvatha) is the other peak that lies within it. The sanctuary adjoins Bisle reserve forest to north and Kukke Subramanya forest range to the west.The Pushpagiri Wildlife Sanctuary has been proposed as a World Heritage Site.
Black Bulbul
Pushpagiri Wildlife Sanctuary is located near Mandalpatty in Kodagu District, Karnataka. Spread over 102 sq km, the sanctuary is situated in the Western Ghats and has thick evergreen and semi-evergreen forests. It is home to elephants, leopards, jungle cats, wild pigs, spotted deer, sambar deer, barking deer, mouse deer, jackals, hare, common mongoose, common otter, small Indian civet, common palm civet and porcupine. The sanctuary can be reached by road from Mysore via Madikeri (120 km). From Madikeri, the sanctuary is 25 km.

Brahmagiri Wildlife Sanctuary


The Brahmagiri wildlife sanctuary is located in the Kodagu district and covers an area of 181 sq km. It has evergreen and semi-evergreen forests, as well as shola-grassland habitat. The Sanctuary is surrounded by agricultural fields and coffee plantations. The eastern tip of the Sanctuary almost touches the northwestern edge of the Nagarahole National Park, separated only by a narrow strip of coffee plantations. The sanctuary derives its name from the highest point, the Brahmagiri peak, which is 1607 m in height. The temperature here ranges from 5° to 32°C, and mean annual rainfall varies from 2500 to 6000 mm.
FLORA:The area has mainly evergreen and semi-evergreen forest, and in the higher altitudes, there are grasslands with shola forest patches. Bamboos are well represented in these forests, with Bambusa bambos being dominant.The sholas are made up of dwarf evergreen trees or ‘krummholz’, stunted due to the strong winds at higher altitudes. Sholas are surrounded by grasslands.
FAUNA:Mammals in the Sanctuary include elephant, gaur, tiger, jungle cat, leopard cat, wild dog, sloth bear, wild pig, sambar, spotted deer, lion-tailed macaque, Nilgiri langur, slender loris, bonnet macaque, common langur, barking deer, mouse deer, Malabar giant squirrel, giant flying squirrel, Nilgiri marten, common otter, brown mongoose, civets, porcupine and pangolin. Python, cobra and king cobra are some of the snakes found in the Sanctuary. Interesting birds in the Sanctuary include emerald dove, black bulbul and Malabar trogon.
Talacauvery Wildlife Sanctuary
Talakaveri Wildlife Sanctuary: This is located in Kodagu district and is spread over 105.00 kmē. Albizzia lebbek, Artocarpus lakoocha, Dysoxylum malabaricum and Mesua ferrea’ are some of the species of flora found here. Clawless otter, elephant, tiger, striped necked mongoose and mouse deer are some of the animal species found here. Fairy bluebird, Malabar trogon and broadbilled roller are some of the avian species found.
Places of Interest

Talakaveri - Pic by Mohan Pai
Talakaveri: the place where the River Kaveri originates. The temple on the river banks here is dedicated to lord Brahma, and is one of only few temples dedicated to Brahma in India and Southeast Asia.
Bhagamandala: situated at the confluence of two rivers, the Kaveri and the Kanika. A third river, the Sujyothi, is said to join from underground.
Kaveri Nisargadhama:
This lovely Tourist Attraction, is built in a natural Island of River Kaveri is a Treat to watch. It has Boating, Elephant Safari, Hanging Bridge and a Deer Park as some of the attractions.



Nisargadhama

A big attraction for tourists and filmdom alike is the Abbey Falls, 8 km from Madikeri. Even during the summer there is plenty of water in these falls. The roar of the falls can be heard from the main road, from where a path goes through lovely coffee and cardamom plantations right up to them. The chirping of innumerable birds which are easier heard then seen, fill the air with sweet music.

Abbey Falls, pic by Mohan Pai
A big attraction for tourists and filmdom alike is the Abbey Falls, 8 km from Madikeri. Even during the summer there is plenty of water in these falls. The roar of the falls can be heard from the main road, from where a path goes through lovely coffee and cardamom plantations right up to them. The chirping of innumerable birds which are easier heard then seen, fill the air with sweet music.

One of the unique places to visit is the Tibetan Colony in Bylekuppe near Kushalnagar. This is Little Tibet. There are Buddhist monasteries, temples and buildings built in typical Tibetan style.
The Golden Temple - Pic by Mohan Pai
This entire area of about 1500 acres is home to the Tibetans displaced from their homeland during 1962. It is now the second largest Tibetan settlement outside of Tibet! Tibetans are enterprising and hardworking people who have turned this once barren area into highly productive agricultural land. This place is also known for many typically Tibetan handicrafts, especially their exquisite carpets.
Golden Buddha, Bylekuppe
Dubare
This is mainly an elephant capturing and training camp of the Forest Department, at the edge of Dubare forest, on the bank of river Kaveri, on the Kushalnagar - Siddapur road. The largest land animal is captured here with the help of tamed elephants and local tribals - the Kurbas - and is held captive for up to 6 months in large teak wood cages.
Dubare - Pic by Mohan Pai
The tamed elephants attend to various jobs during the day and in the evenings they come down to the river to bathe and to be scrubbed clean by their mahouts. Afterwards the mahout obliges eager tourists for free elephant rides within the camp. In the evenings, all the elephants are offered a special treat of ladoos made of ragi and jaggery, each no smaller than a cannon ball!

Nalknad Palace :

- Built by Doddaveerarajendra in 1792 A.D. safe in the depths of a dense jungle at the base of Tadiyandamol, this elegant two-storied palace served as the last refuge for Chickaveerarajendra before he surrendered to the British in A.D. 1834.
Nalknad Palace - pic by Mohan Pai
Ornamental pillars and verandahs with carved windows and door frames are its notable features.
Iruppu Falls:
A sacred spot in south Kodagu in the Brahmagiri hill range. The [Lakshmana Tirtha River] flows nearby. Legend says that Rama and Lakshmana passed this way while searching for Sita. Sri Rama asked Lakshmana to fetch some drinking water for him. Lakshmana shot an arrow into the Brahmagiri hills and brought into being the river Lakshmanatirtha. The river descends into a cataract known as the Iruppu Falls. This place is said to possess the power to cleanse one’s sins and is visited by thousands of devotees on Shivaratri day.
Omkareshwara Temple, Madikeri which has a Gothic and Islamic style of architecture was built by Lingaraja in the year 1820.
Omkareshwara Temple, Madikeri - pic by Mohan Pai
The Shiva linga installed inside the temple is believed to be brought from Kashi
Gaddige, Madikeri
Gaddige or the tombs of Virarajendra and Lingarajendra at Madikeri is one of the important monuments of Coorg. The royal tombs on a hillock to the north of Madikeri provides a commanding view of the town. Lingarajendra’s tomb was built in 1820. There are also the tombs of a Raja’s priest and that of two army commanders. A commemorative plaque, eulogizing the bravery of General Biddanda Bopu who fought Tipu Sultan has been recorded by Dodda Veerarajendra in an inscription. Gaddige, Madikeri - pic by Mohan Pai
The tombs are in the style of Muhammadan edifices with domes in the center and turrets at the angles. The bars of windows made of brass have fine engravings.

Harangi Dam is a beautiful reservoir situated in north Kodagu, in Kodagu District in Karnataka.
Harangi Dam - pic by Mohan Pai
This large and impressive dam is on the Kaveri River in idyllic and serene surroundings. The dam is an ideal place for picnic, and there are some short walks along designated paths.

References: Gazeteer of Coorg (1870) by G. Richter, Feathered jewels of Coorg by Dr. S. V.Narasimhan, Wikipedia.

Posted in Biodiversity - Kodagu (Co.

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