M Sc Dissertation(WII)

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Subject: search.filters.subject.Habitat utilization

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    Habitat Utilization by Hog Deer (Axis Porcinus) in Relation to other Sympatric Species at Jaldapara Wildlife Sanctuary
    (Wildlife Institute of India, Dehradun, 1999) Biswas, Tanushree; Mathur, V.B.; Sawarkar, V.B.
    This study on habitat utilization by hog deer (Axis porcinus) in relation to other sympatric species (chital & rhino) was carried out from December 1998 to April 1999 in Jaldapara Wildlife Sanctuary, West Bengal, The spatial and seasonal differences in habitat utilization of grasslands by hog deer, chital and rhino were investigated, The study was restricted to various types of grassland s existing within the sanctuary which were broadly stratified into five major types: Pure grassland (natural ), pure grassland (plantation), Savanna grassland (natural) and Savanna grassland ( plantation) and riverine grassland, Different habitat were traversed on riding elephants on selected paths to collect data on animal abundance/hr based on sightings in different habitat types, A total of nine transects were laid in different habitats to quantify availability of habitat parameters and their selection. Dung abundance was quantified using belt transects, at each 100m interval on the transects, The availability and utilization of habitats based on direct and Indirect methods were examined using Neu et al (1974), The results showed that hog deer selected areas with extensive grass cover with structural mosaics of cover and mostly early phenophase as opposed to habitats with low cover values, High abundance of hog deer were found in areas with higher proportion of Imperata cylindrica, Fire or burning of grasslands in combination with rain seemed to influence the overall selection of habitat by hog deer, Cutting of thatch by local people also influenced the habitat use by hog deer, Area preferred by hog deer were found to have high cattle dung density thus showing a very high pressure on areas preferred by hog deer, Interaction with chital seemed to be very low as the areas preferred by hogdeer are avoided by chital, Rhino also showed a similar trend with preference for plantation grassland areas and avoidance for natural grassland, Apart from the effect of these sympatric species directly, habitat use by hog deer seemed to have been influenced by the management steps taken to provide protection to Rhino, Plantation areas raised for the management of rhino were avoided by hog deer.
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    Habitat Utilization and Distribution Pattern of Indian Wild Pig [sus scrofa cristatus] in Sariska Tiger Reserve
    (1991) Rao, D.D. Bhujanga; Rawat, G.S.
    Habitat utilization and distribution pattern of wild pig (Sus scrota cristatus) was studied in Core I of Sariska Tiger Reserve, Rajasthan over winter and early summer. Habitat was stratified into scrubland, mixed woodland, Zizyphus woodland, and Anogttissus Forest, and important parameters such as vegetation, phenology of important plants, topography, water and disturbance were quantified. Four foot transects (two in plains and two in hills) and three cycle transects covering 188 km and 688 km respectively over two seasons gave a total sighting of 206 wild pigs .Of these 117 were in scrub 35 in Mixed woodland 51 in Zizyphus woodland, and 3 in Anogeissus forest. It was found that wild pigs utilized Zizyphus woodland in winter (density=32.97) and scrubland in summer (density=17.29) more than availability . This shows that there is a definite shift in the habitat use from winter to summer. The distribution pattern of wild pigs in various habitats and availability of important food plants during summer (pinch period) are analysed. The data from dung analysis and indirect evidences from digging show their omnivorous food habit, and a definite seasonality in food intake.