M Sc Dissertation(WII)
Permanent URI for this collectionhttp://192.168.202.180:4000/handle/123456789/3
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Item Birds communities of Lower Dachigam Valley, Kashmir(Wildlife Institute of India, Dehradun, 1989) Katti, Madhusudan V.; Johnsingh, A.J.T.This study explores the ' relationship between birds and vegetation in Lower Dachigam Valley in the Kashmir Himalaya. This area falls at the transition between the Palaearctic and Indo-,Malayan biogeographic realms. It is one of the first studies of bird communities in .the Himalaya and one of few in this temperate tropical transition zone. The study 'was 'aimed at testing the following hypotheses: 1. Bird communities differ between vegetation types 2. Community characteristics are related to various habitat factors viz. vegetation height, plant species diversity and food resource diversity. Transect sampling method was employed to obtain information on bird species composition, diversity and density.Item Distribution and movement patterns of the Himalayan Black Bear (Selenarctos thibetanus Cuvier) in Dachigam National Park, Kashmir(Wildlife Institute of India, Dehradun, 1989) Saberwal, Vasant; Johnsingh, A.J.T.This study investigates the distribution patterns of the Himalayan Black Bear (Selenarctos thibetanus) in Dachigam Rational Park, Kashmir. It involved basically two components. (i) looking at the differential usage of different parts of the park by bears over a five month study period. and (ii) the spatio-temporal variation in the distribution and availability of fruit during the study. Dachigam National Park of 141 sq. km ranges in altitude from l800m to 4400m. It is divided into Lower (2& sq km) and Upper (115 sq km) Dachigam. Lower Dachigam (LO) is characterized by a broad valley flanked by steep hillsides. Upper Dchigam (UO) is composed of several gullies separated by fairly steep ridges. The valley vegetation is broad leaved, moist deciduous forest with an unusually high abundance pf fruit species. The slopes on either side are dominated by grass (south facing slopes) or a combination of grass, conifers and shrubs (north facing slopes). The vegetation of Upper Dachigam is mainly composed of coniferous species, with alpine meadows in the higher areas. Transects were walked through Lower Dachigam, considered to have over 90% of the Black Bear population of the park. to record animal locations and signs. especially droppings. 100m segments were marked along these transects and sightings and signs plotted accordingly. These segments were the basis of the habitat mapping exercise. A subjective estimate of the abundance of key fruit species was made for each segment. A phenology study looked at the timing of fruiting of key species. Data analysis shows a good, though not significant correlation between sighting frequencies and fruit availability. However there is strong suggestive evidence to indicate that anilla1 movements are largely Controlled by the spatial distribution and phenological status of five to six key fruit species. The lack of significance is probably due to the small data set. The study indicated the lack of defended territories. Instead, as reported from studies on the American Black Bear (Ursus americanus), there are marked seasonal shifts in the use of the home range. Feeding aggregations of up to 20 bears in one hectare are common. Densities of over 1.5 bears per sq km were recorded in Lower Dachigam at times of high fruit abundance. For two months of the year, May and August, black bears disperse out of the park due to very low food availability. Crop raiding (apple, cherry, and maize) is common at this time. The unusually high abundance levels of fruit in Lower Dachigam (due to oak, walnut, and mulberry plantations, over 70 years old) supports a high density of bears at certain times of the year. However, the lack of sufficient fruit at other times of the year is resulting in increasing levels of conflict with the local human population. Problems of oak and walnut regeneration, and the implications of extremely localized oak distribution are discussed. A more detailed study investigating the problem is suggested.