PhD Theses (WII)
Permanent URI for this collectionhttp://192.168.202.180:4000/handle/123456789/104
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Item Diversity and distribution of Moth Assemblages Along Altitudinal Gradient in Gangotri Landscape, India(Wildlife Institute of India, Dehradun, 2015) Sanyal, Abesh Kumar; Uniyal, V.P.This study intends to document the extent of moth assemblages that exist amongst various habitats in a typical Western Himalayan altitudinal gradient in Gangotri Landscape Area (GLA). In this study, using the elevation gradient as natural experiment, the faunal structure and diversity of the moth assemblage featuring all the major macro and micromoth families as well as relationships between moths and their biotic and abiotic environments were explored. Specific objectives of the study were: (1) Documenting and prepare taxonomic inventory of rich moth fauna of Gangotri Landscape Area; (2) To assess diversity and distribution of moth assemblages among different elevations and vegetation types of Gangotri Landscape; (3) To analyze the influence of altitude, seasons, vegetation types and anthropogenic disturbance factors on moth assemblages; (4) To investigate morphometric changes (body size and proportional body parts) in moths along altitudinal gradient. The study was conducted in Gangotri Landscape Area (GLA), a vast conservation network in the North-Western part of Uttarakhand, in district Uttarkashi. A total of 670 morphospecies belonging to 22 families and 356 genera were collected during entire sampling period from 2008-2012. This study is an important step towards better understanding of a long-neglected but diverse and charismatic herbivorous insect assemblage in Himalayan temperate altitudinal gradient.Item Systematics and diversity of spiders (Araneae) in Nanda Devi Biosphere Reserve(Wildlife Institute of India, Dehradun, 2011) Quasin, Shazia; Uniyal, V.P.The present study was carried out in Nanda Devi Biosphere Reserve (NDBR), Uttarakhand, India, which is located in the northern part of the Western Himalaya in India, one of the important sites of wilderness and biodiversity in the Himalayan region. This study was selected for its conservation value, representation of biome and little existing information. The present study was conducted from January 2008 to July 2011. The study aimed to investigate the spider community structure along the altitudinal gradient and the influence of habitat covariates like vegetation types, ph, litter depth, humidity and temperature, on spider assemblages in the intricate landscape of the NDBR. The pattern of species diversity was explored using a set of standard methods and ecological indices. This study obtained the first comprehensive representation of the spider fauna in NDBR, which would help in assessing the status of spider diversity in the region keeping in mind its conservational value. This study revealed the relative importance of diverse habitat types on diversity and composition of spider assemblages in NDBR.