Theses and Dissertations

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Subject: search.filters.subject.Conservation status

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    Determinants of occurrence of snow leopard and its prey species in the Indian Greater and Trans Himalaya.
    (Wildlife Institute of India, Dehradun, 2017) Ghoshal, Abhishek; Pandav, Bivash; Bhatanagar, Yash veer
    Understanding patterns of species occurrences and how their distribution and abundance are affected by abiotic and biotic factors have been a major theme of ecological research. The range and changes in the distribution of a species are important parameters to assess conservation status. Robust assessment of factors affecting species distribution and abundance contribute to the identification of conservation issues, appropriate scale(s) for species conservation and key stakeholders. This study is attempted to understand how distribution and abundance of a large-ranging and difficult-to-sample carnivore and its primary wild-prey species are affected by topographic, vegetation and land-use variables, at wide and fine spatial scales. Study is focused on the snow leopard (Panthera uncia), the elusive, rare and endangered apex predator of the Central and South Asian mountain systems, and its main prey, blue sheep or bharal (Pseudois nayaur) and Asiatic ibex (Capra sibirica) for the work. I have utilized tools from quantitative ecology and social sciences through the thesis.
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    Conservation and management of snow leopard and co-predators with special reference to large carnivore-human conflicts in select areas of western Himalaya.
    (Wildlife Institute of India, Dehradun, 2016) Maheshwari, Aishwarya; Sathyakumar, S.
    The study aims to investigate occurrence, distribution of snow leopard, co-predators and their prey in Kargil, and some gaps areas in Greater Himalayan region of Himachal Pradesh and in Greater Himalayan and Trans Himalayan regions in Uttarakhand. Objectives are as follows: Considering gaps in the knowledge on snow leopard in the Western Himalaya, this study focused on the following objectives 1. Determine conservation status and distribution of snow leopard and copredators in Kargil, Uttarakhand and Himachal Pradesh 2. To assess occurrence and estimate density of prey species in Kargil 3. To asses food habits of snow leopard in Kargil, Uttarakhand and Himachal Pradesh 4. To assess snow leopard-human conflicts in Kargil, Uttarakhand and Himachal Pradesh 5. To Predict habitat suitability of snow leopards in the western Himalaya.
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    Conservation status of fishes in the tributaries of Ramganga with special reference to golden mahseer Tor putitora Hamillton
    (Wildlife Institute of India, Dehradun, 2005) Atkore, Vidyadhar Mahadeorao; Sivakumar, K.; Johnsingh, A.J.T.
    A common goal in the studies of community ecology is to uncover patterns of species abundance or distribution and determining the factors that are responsible for them. Himalayan waters are unique in the ichthyofaunal diversity. To know what species are here, fish sampling was carried out with help of cast net. Three rivers were identified for the stratified fish sampling. Each river was divided at two hundred meter distance apart. Each segment was sampled thrice though out study period. Morphometric measurements were taken in the field. Habitat parameters were also recorded as on same day of fish sampling. Result shows that MandaI River had .more species richness followed by Khoh and Kolhu. Forty three species belonging to five orders and ten families (four species yet to identify) were recorded in the study river. Of these, approximately 80 % were classified into the rare category. Tor putitora, Garra gotyla Barilius barila, and Scizothorax richardson are listed in the IUCN Red list. However, endangered golden mahseer was one of the commonest fish. The reason could be the preferred spawning habitat ground or abundant food availability. Population estimation was estimated by using Jolly Seber method, resulted high standard error. Low number of recapture sessions could be the reason. Mostly juveniles of 6-10 cm size classes were abundant in all three rivers followed by 11-15 cm group. The total length measured for Golden mahseer varies from 3 cm to 28 cm. The condition factor was calculated based on the available size class. Result showed that 20-25 cm size classes of golden mahseer were in better condition in the Study Rivers. However, condition for size class 0-5 cm fish was better in Kolhu River than others. The 6-10 cm size class, 15-20 cm and 21-25 cm were doing better in the MandaI than two rivers.