Technical Reports
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Item Development and maintenance of studbooks of selected endangered faunal types in the Indian Zoos. Final report(Wildlife Institute of India, Dehradun and Central Zoo Authority, 2012) Nigam, Parag; Srivastav, A.; Tyagi, P.C.Item Studbook of Western Tragopan (Tragopan melanocephalus)(Wildlife Institute of India, Dehradun, 2011) lakshminarayan, N.; Malviya, Majari; Bose, S.; Dhiman, S.; Gulaati, A.; Nigam, Parag; Ramesh, K.Item National Studbook of Lion-tailed macaque (Macaca silenus)(Wildlife Institute of India, Dehradun, 2011) Malviya, Majari; Srivastav, A.; Nigam, Parag; Tyagi, P.C.Item Indian National Studbook of Bengal tiger (Panthera tigris tigris)(Wildlife Institute of India, Dehradun, 2011) Srivastav, Anupam; Malviya, Manjari; Tyagi, P.C.; Nigam, ParagItem National studbook of stump-tailed macaque (Macaca arctoides)(Wildlife Institute of India, Dehradun, 2014) Nigam, Parag; Nilofer, B.; Srivastav, A.; Tyagi, P.C.Item National studbook of Red Panda (Ailurus fulgens fulgens)(Wildlife Institute of India, Dehradun, 2014) Nigam, Parag; Srivastav, A.; Nilofer, B.; Tyagi, P.C.Item National studbook of Pig-tailed macaque (Macaca leonina)(Wildlife Institute of India, Dehradun, 2014) Nigam, Parag; Nilofer, B.; Srivastav, A.; Tyagi, P.C.Item National studbook of Golden langur (Trachypithecus geei)(Wildlife Institute of India, Dehradun and Central Zoo Authority, 2014) Nigam, Parag; Nilofer, B.; Srivastav, A.; Tyagi, P.C.Item Tiger corridors of the Eastern Vidarbha landscape(NTCA and Wildlife Institute of India, Dehradun, 2016) Mondal, Indranil; Habib, Bilal; Nigam, Parag; Talukdar, GautamItem Evaluation of prey availability and habitat suitability for tigers and its ranging patterns in Sanjay Tiger Reserve, Madhya Pradesh(Wildlife Institute of India, Dehradun, 2017) Ramesh, K.; Sankar, K.; Kumar, Deleep; Nigam, Parag; Qureshi, Qamar; Raman, K.; Rajasekar, R.; Chaudhuri, Sankarshan; Sundaram, Snehaa; Hazra, PoushaliTiger conservation in human dominated landscape such as Sanjay Tiger Reserve (STR) has always been challenging for the managers and conservation planners. Anthropogenic factors have affected the area negatively, causing habitat degradation, depletion of prey base and unviable tiger population. STR is considered to be low density tiger population area and require recovery strategy, involving translocation from other areas, since natural colonization is not possible to boost the population to viable state. As a precursor to active population recovery, the project was conceived and implemented to establish baseline on prey availability and habitat suitability for tigers, which also involved understanding ranging patterns of tigers using radiotelemetry. Prey availability in terms of density of wild ungulate was estimated and was found to be low (8.2 ± 0.8 animals per km2), but there is an increasing population trend during the study period (2014- 2017), largely owing to active protection measures. Amongst the wild ungulates, density of chital was the highest (3.0±0.6/km2) followed by wild pig (2.0±0.6/km2), nilgai (1.8±0.3/km2), chinkara (1.1±0.3/km2) and four horned antelope (1.0±0.4/km2). Livestock (11.6±5.5/km2) was the most abundant animal using the reserve throughout, also contributing to prey base to some extent. Home range of one radio-collared adult male tiger was estimated to be 208.6km2 during May 2015 to July 2015 and the animal got killed to a territorial fight with another male tiger. Similarly, home range of radio-collared (captive-raised) tigress was estimated to be 154.1 km2 during October 2016 - May 2017. Exploring large areas could be attributed to limitation of mate choice and a depleted prey base. Habitat suitability of tiger was assessed based on habitat covariates and it was found that 44% of the total area of tiger reserve is potentially suitable habitat in the current status of prey availability, but the suitability can increase to 61% if prey base can be restored in other areas of the reserve. Carrying capacity of tiger was determined for STR based on the current prey density. It was found that STR can support 11 tigers in this present situation. Population Viability Analysis (PVA) with the carrying capacity of 11 tigers and current population (four individuals, one adult male, two adult females and one juvenile) of tiger in STR showed a poor survival probability (0.12 ±0.03) over a time span of 25 years. However, given the availability of habitat space and potential to increase prey base, doubling of carrying capacity from 11 to 22 tigers is possible with a supplementation of two tigers in every three years until year ten and it will ensure very high survival probability (0.87±0.03). Active recovery strategy should target the futuristic carrying capacity and management actions would have to be geared towards this. In this context, active population recovery and long-term monitoring strategy has been proposed towards successful population recovery and establishment of viable tiger population, along with other habitat covariates.