M Sc Dissertation(WII)

Permanent URI for this collectionhttp://192.168.202.180:4000/handle/123456789/3

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Author: search.filters.author.Dutta, SutirthaSubject: search.filters.subject.Mammals

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    HABITAT SELECTION BY DESERT FOX (Vulpes vulpes pusilla) IN HUMAN MODIFIED LANDSCAPE OF THAR DESERT
    (Wildlife Institute of India, Dehradun, 2024) Krishnapriya, M.; Dutta, Sutirtha; Talukdar, Gautam
    Knowledge about habitat use and selection helps to assess the impact of land use change on wildlife and inform conservation management. This study aims to understand habitat use and den site selection of Desert Fox (Vulpes vulpes pusilla) in the human modified landscape of Desert National Park and it adjoins in Rajasthan. The study was conducted from January 2024 to April 2024 that include the fox breeding season. Species occupancy inside and outside protected areas were examined to understand the effectiveness of protection. Den site selection was examined by comparing habitat, resource, and disturbance variables at the scale of core usage around the den and random control points. Protected area showed a positive effect on occupancy of foxes. Desert fox was found to be using diverse habitat types for denning, however, scrubland tended to be used more than availability and grassland was used less than availability, in the study area. Agriculture did not influence den site. Foxes showed strong avoidance to areas with high human and livestock disturbances and strong preference to areas with abundant Capparis fruiting for denning. Increase in human footprint in the landscape could potentially lower the survivability and reproductive success of foxes by making them prone to direct threats from humans and subsidized predators such as dogs.
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    Has conservation gone to the dogs? : ecological aspects of free ranging dogs of the Thar
    (Wildlife Institute of India, Dehradun, 2017) Mohandas, Monisha S.; Jhala, Y.V.; Qureshi, Qamar; Dutta, Sutirtha
    One of the few mammals to have a near-global distribution, dogs (Canis familiaris) are an introduced mammalian predator. Dogs have contributed to 11 vertebrate extinctions and are a potential threat to 188 threatened species globally. This study investigates population sizes, ranging patterns, behavioural activity, and resource utilisation of free-ranging dogs in Thar landscape, Rajasthan. 2. Using double sampling framework, I calibrated effort-standardized counts (C) with mark-recapture based abundances (𝑁̂) that was used to estimate dog abundances within human habitation. Landscape-scale dog abundance was estimated using vehicle transect based distance sampling. Home ranges of nine free-ranging dogs was determined using locations from radio-telemetry. Resource use was quantified as feeding durations on various food items based on continuous monitoring. Resource availability was quantified as wild prey and livestock carcass density using line transect based distance sampling. This study provides information on important aspects of free-ranging dog ecology and their impacts in Thar landscape. It provides the basis required for implementing dog control programs in the landscape focusing on the flagship and critically endangered great Indian Bustard Ardeotis nigriceps.