Browsing by Author "Ishwar, N.M."

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    Reptilian species distribution in response to habitat fragmentation and microhabitats in the rainforests of southern Western Ghats, India.
    (Wildlife Institute of India, Dehradun, 2001) Ishwar, N.M.; Chellam, Ravi
    Habitat fragmentation has long been recognized as a threat to biological diversity and a major cause in the sudden increase in the extinction rates of species. Demographic and environmental stochasticity, habitat degeneration, the decrease in genetic variability and the influx of secondary forest species all lead to the extinction of forest species in the forest fragments. The forests in the various hill ranges in the Western Ghats are under anthropogenic pressure, mainly due to commercial plantations like tea, coffee, cardamom and spices and timber. The construction of dams for irrigation and hydroelectric power projects and roads and rapid urbanization are other ways by which the once contiguous middle elevation rainforests of the Western Ghats have been dismembered into scattered fragments. The rainforests of the Western Ghats is one of the richest biogeograpic zones in the country with more than 50% of the reptiles reported from the area being endemic to these forests. The most serious problem that is faced by the wildlife managers in the Western Ghats is that the remaining forests, especially the rainforests, occur in a highly fragmented state. The effect of rainforest fragmentation has taken its toll on the overall biological diversity with declines in reptile species contributing to this loss. Addressing this conservation problem becomes difficult in any forum, as studies on reptiles are few and poorly represented in literature. In this background, the objectives of the present study broadly defined here were to understand 1) the factors that govern the distribution of reptiles in the rainforests. The factors include both macro and microhabitat variables that the reptiles are know to respond to; and 2) to see if the process of rainforest fragmentation has affected the reptilian distribution and community structure, and to understand the direction of this impact. The study was divided in to two phases, the first phase was devoted to understanding the factors that were likely to influence the distribution of rainforest reptiles, while the second phase looked into the effects of rainforest fragmentation on reptiles. A combination of sampling techniques that included the adaptive cluster sampling (for leaf litter reptiles), the forest transects (for arboreal reptiles), stream surveys (for nocturnal stream dwelling reptiles) and opportunistic sampling was used to sample rainforest reptiles. Three sites in the contiguous rainforests of Kalakad-Mundanthurai . Tiger Reserve (KMTR), that broadly represented the altitude range and the different drainages, formed the site for the first phase of the fieldwork. The fourteen rainforest fragments in the Anamalai Hills were the study sites for the second phase of fieldwork where the effects of rainforest fragmentation were enumerated explore in detail the two major points expressed above, and detailed assessment of what is needed to promote reptile conservation is provided at the end.
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    World heritage biodiversity programme for India
    (Wildlife Institute of India, Dehradun, 2003) Mathur, V.B.; Krishnaswamy, Jagdish; Singsit, S.; Bawa, Kamajit S.; Ishwar, N.M.; Vanak, Abi Tamim
    India, one of the earliest signatories to the World Heritage Convention has five key Protected Areas currently on UNESCO’s World Heritage List - Kaziranga and Manas in Assam, Keoladeo Ghana in Rajasthan, Sundarbans in West Bengal and Nanda Devi in Uttaranchal. All five sites satisfy the natural heritage criterion ‘contain the most important and significant natural habitats for in-situ conservation of biological diversity, including those containing threatened species of outstanding universal value from the point of view of science and conservation’ (iv) and hence are critical to the preservation of globally Significant biodiversity. A strong potential exists to build and to strengthen the constellation of India’s World Heritage Biodiversity (WHB) sites in ways that are exemplary and beneficial for the larger network of PAs in India and abroad. The World Heritage Convention also offers a unique possibility in India to link nature and culture in innovative ways to promote conservation of species like the tiger and the elephant at a nation-wide scale. India presents the greatest challenge anywhere in the world for integrating conservation and development on a grand scale, and success here could have major implications for other parts of the developing world. The WHB sites symbolize humanity's struggle to conserve the earth's precious biological heritage against its own onslaught of nature. Combined with other Protected Areas such as National Parks and Wildlife Sanctuaries, WHB sites represent the last stand of the nature and the best hope for humanity to conserve our most precious endowment. India represents a remarkable example of successful efforts to conserve significant amounts of biodiversity against all odds. Despite the presence of more than one billion people, India has managed to place 154,826 km? of its land area under its PA network. Considerable amount of biodiversity also occurs in habitats outside protected areas. Furthermore, protected areas in India are among the best-managed reserves in the developing world. The WHB sites and other Protected Areas in India, however, remain highly vulnerable to degradation. As islands, these areas are surrounded by harsh biophysical landscapes and alienated local communities. The PA management is not fully equipped to deal with the growing threats to the parks. The staff is inadequately trained in the enforcement of laws protecting wildlife. In some cases such as Manas in the northeast, field staff is demoralized, having suffered setbacks due to insurgency and social turmoil in the area. Moreover, the field staff have neither access to good communications nor to facilities for health and education for themselves and their families and the basic infrastructure required for the effective management of the PAs are generally lacking. World Heritage Biodiversity Programme for . At higher levels, the park management has been unable to incorporate concepts of conservation science and wildlife management in developing management plans. Since parks represent habitat islands surrounded by dissimilar habitats with high densities of human populations, changes inside the park due to intrinsic and extrinsic factors are inevitable. However, there is no significant effort to adopt a systems approach to anticipate and predict future changes. Continuous assessment and monitoring of biodiversity are almost non-existent. The "island" status of the World Heritage sites also makes them highly vulnerable to anthropogenic pressures. Although these islands are connected to varying degrees with other natural habitats, there have been no comprehensive efforts to examine the feasibility of establishing habitat connectivity in areas containing the WBH sites. Since the areas surrounding sites are even more vulnerable to human pressures than the WBH sites, it is critical to examine the potential of connection among natural areas wherever these sites are located and to bring these areas under greater protection. A more serious problem is the lack of local community involvement in conservation efforts. Local communities in many cases remain hostile to the idea that the parks cannot be used for their traditional purposes of grazing, fishing, or extraction of fuel wood and non-timber forest products. Wild animals from the parks also pose a danger to their livestock, crops and houses, thus exacerbating the conflict. Thus, local communities perceive conservation legislation as a threat to their livelihoods. Although there are economic benefits from conservation, such as ecotourism, such benefits generally do not accrue to local communities. Protected areas also have a low profile. The civil society in general is not aware of the importance and in some cases even the existence of World Heritage sites. Although the protected areas have a tremendous educational potential, educational institutions hardly ever use world heritage sites for educational purposes. A new initiative funded by the United Nations Foundation (UNF) and United Nations Educational, Scientific and Cultural Organization (UNESCO) and coordinated by the Ministry of Environment and Forests, Government of India initially covering four existing and ten proposed World Heritage Cluster Sites in India has been initiated to address the key conservation and management issues within a single new framework. This framework referred to as the ‘World Heritage Biodiversity Programme for India (WHBPI)’ has been developed through a collaborative planning process by the, Wildlife Institute of India (WII) and the Ashoka Trust for Research in Ecology and the Environment (ATREE). The ten year WHBP' will have two phases of four and six years each. Four of the existing five WHB sites in India namely Kaziranga, Keoladeo, Manas and Nanda Devi National Parks have been included in the WHBPI. programme as it is receiving a similar support from the Asian Development Bank under the ‘Sunderbans Biodiversity Project’. The goal of the WHBPI is to strengthen biodiversity conservation in Protected Areas by \ building replicable models at WHB sites that emphasize law enforcement, promote habitat integrity and connectivity, enhance the role of local communities in Protected Area management, improve the professional, social and political profile of the Protected Area management community and its civil society partners. The specific objectives of WHBP! are to: 1) increase the capacity of the staff to address critical needs in conservation, management and protection of the WHB sites, (2) enable the . park staff to incorporate principal concepts of modem science in management plans, (3) increase the connectivity among natural areas in the vicinity of the WHB sites, (4) enhance the stake and the involvement of local communities in the management and the protection of the parks, (5) raise the profile of the WHB sites in civil society, (6) bring about policy and governance reforms so that the management have the flexibility to address contemporary challenges to the conservation of biodiversity in the parks, and (7) conduct surveys at sites that may be designated as additional World Heritage. Biodiversity cluster sites.