Theses and Dissertations
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Item Distribution of major alien invasive plants and impact assessment of Ageratina adenophora (Spreng.) K & R. in Kailash Sacred Landscape, Uttarakhand(Wildlife Institute of India, Dehradun, 2022) Chaudhary, Alka; Adhikari, B.S.; Rawat, G.S.The study was conducted to assess the spread, distribution, impact of invasion in Indian part of Kailash Sacred Landscape (KSL) characterized by interspersion of human habitations, extensive forest managed by the State Forest Department and local community institutions (Van Panchayat). The objectives of the study were (i) To model spatial distribution of selected plant invasive species using distribution modeling technique. (2) To assess the impacts of IAPs on native flora and relationship with habitat parameters (3) To analyze people's perception towards the spread of IAPs in KSL India landscape (4) Experimental trials on Eco restoration of habitats and prediction of future spread for better managementItem Genetic assessment of the Non-descript pig breeds across selected regions of Uttarakhand(Wildlife Institute of India, Dehradun, 2023) Sahoo, Khushboo; Gupta, S.K.; Gopi, G.V.India, which has ancient history of pig rearing, is home to several indigenous pig breeds that reflect the adaptation of Sus scrofa to different environmental and cultural conditions. However, only 13 of these breeds are currently recognized and documented by the National Bureau of Animal Genetic Resources. The present research was undertaken to identify the spatial distribution, socio-economic status, pig husbandry methods of pig rearers, and the impact of Exotic pig breed on the indigenous breed and ecology of the region. As molecular characterization is a valuable tool that provides insights into the evolutionary history and genetic diversity of the current pig breed raise in a region. Hence by incorporating molecular techniques in understanding of the domestic pig breed and their interactions with ecosystems, promote more precise and science-based management that contributes to biodiversity conservation and sustainable husbandry practices. The present study will also aim to evaluate the maternal lineage, genetic diversity and population structure of the domestic pig breeds at the regional scale, using microsatellite markers and mitochondrial DNA sequences. The survey and sampling was done in the planar (Dehradun, Haridwar and Nainital) districts of Uttarakhand, a mountainous state of India that lies in the foothills of Himalayas, where rapid urbanisation and continuous migration make us reconsider the necessity of an organise promotion of the piggery sector due to its multiple ecological implications.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 Abundance, distribution & pattern of human impact on river Dolphin (Platanista gangetica gangetica).(Wildlife Institute of India, Dehradun, 2018) Deori, Sunny; Qureshi, QamarThis study took place in a tributary of river Brahmaputra named Kulsi which originates from the Meghalaya enters Assam at Umkiam where it is known as Kulsi and finally discharges at Brahmaputra at Nagarbera, Assam. It is a highly populated riverscape. According to 2011 census data, the riverscape has 55972.88 hectares of cultivable land which is solely dependent for irrigation on natural sources (Rainfall and Rivers). Also, the river is divided into 7 River fishery under Revenue department of Assam. About 2500 commercial fishermen are registered under the fisheries of Kulsi River and 1,29,095 cultivators. Apart from this fine quality sand is a boon to the people of Kulsi floodplain. More than 5000 families were dependent on this business. The recent increase in construction business in Guwahati metropolitan and the nearby blooming towns is raising the earning bar of the people of Kulsi River. My study aimed at the following objectives: 1. Estimating the abundance & patterns of dolphin distribution across Kulsi River. 2. Estimating the effects of different human activities which can possibly affect the habitat and distribution pattern of dolphins in Kulsi River (special preferences to existing commercial fisheries, sand mining, & irrigation). 3. Socio- economic status of fishermen community, sand mining community and farmers and their attitudes towards dolphin and wider ecosystem conservation. 4. Examine suitable measures to minimize/prevent the harmfulness of these fishing gears and practices in the commercial fisheries of Kulsi.Item Distribution of breeding Phylloscopus and Seicercus warblers in the Himalayas: Role of ecomorphology and competition.(Wildlife Institute of India, Dehradun, 2012) Ghosh, Mousumi; Rawat, G.S.; Price, TrevorPresent study is carried out for the overarching goal of understanding the ecological and historical determinants of geographic and altitudinal distribution of sixteen breeding Phylloscopus and Seicercus species in the Himalayas. The broad research objectives were as follows: 1. Assess the availability of arthropod resources across the eastern and western Himalaya along the elevational gradients. 2. Identify the climatic correlates of the breeding distribution of Phylloscopidae. 3. Examine the geographic variation in foraging ecology of Phylloscopidae across the Himalayan bioclimatic gradient.Item Study on distribution and relative abundance of large mammals and impact of human disturbance in and arond Mehao Wildlife Sanctuary, Arunachal Pradesh(Wildlife Institute of India, Dehradun, 2023) Ahmed, Arif; Gopi, G.V.The current study was started to gather baseline data on a few ecological factors (Diversity, distribution, relative abundance, Activity pattern and habitat preference) of selected large animals in Mehao WS. Northeast India. The study period was November 2017 to 2020. The objectives of the study are 1. To estimate the relative abundance and occupancy of selected large mammals in and around Mehao wildlife sanctuary. 2. To develop Habitat suitability model for selected large mammals in and around Mehao WS 3. To analyse the land use/land cover change pattern and to identify the main driving factors.Item Studies on Taxonomy, Ecology, Distribution and Conservation values of Sthalavrikshas (Temple Plants) in Tamil Nadu, South India(SACON, 2007) Gunasekaran, K.; Balasubramanian, P.A review of previous studies in this field reveals that the information is found scattered. Only a handful of scholars have conducted research in Ulis field and that too based on medicinal, religious and mythological literature. Hence, a systematic study is felt as the need of the hour with the following objectives.1. To conduct taxonomic survey of s tha1avrikshas and bring out an authentic list of sthala vrikshas of Tamil Nadu. 2. To assess the ecological importance and conservation values of sthalavrikshas. 3. To document the role of traditional customs and beliefs of sthalavriksha worship in conserving the botanical resources. Tamil Nadu s tale along with union territory of Puducherry comprises the study area. Tamil Nadu (8" 5' and 13° 35' N Latitude and 76° 15' and BOO 20' E Longitude) is situated in the southern part of peninsular India. Tamil Nadu has wide range of land forms such as Coast, Plains and Ghats and is often known as the land of temples. There arc about 25,000 temples in the state.Item Status, distribution and ecology of the Grey-Headed Bulbul Pycnonotus Priocephalus in the Western Ghats, India(SACON, 2007) Balakrishnan, P.; Vijayan, V.S.The Western Ghats of peninsular India is one of the globally important ecoregions harbouring some of the fine rainforests of the world. This mountain ranges host more than 507 species of birds including several endemics little is known, however about the ecology and conservation status of many species. Habitat loss and fragmentation due to human activities the major threats to the restricted-range birds of the Western Ghats. Their narrow habitat requirements, particularly during the breeding season are yet another possible important factor causing their decline. Hence, evaluation of their basic ecological requirements, particularly their selectivity to microhabitats during breeding is of significant value while formulating conservation programme for these species. The Grey-headed Bulbul is a poorly known endemic to the Western Ghats. This restricted range species has a very limited distribution in the heavy rainfall areas in the hills along the south-western side of India from Belgaum and Goa to Kanyakumari. Observations, including both sightings and collections of Grey-headed Bulbul are very few from 1869 to 2002. It W3S reported as '"fairly common but rather local". However, the recent surveys do not show 'common' in any of the areas covered. This indicates a decline in population probably due to habitat loss and fragmentation. In the above background a detailed study was carried out to assess the status and distribution of Grey-headed Bulbul in the Western Ghats with respect to altitude and habitat and, to explore the habitat selection, for3ging ecology and breeding biology of the species to identify key factors affecting its long- term conservation. Intensive field surveys were Carried out between February 2002 and January 2004Item Distribution of select nutrients and metals in the soils of a wetland-terrestrial ecosystems complex: A Case Study of Keoladeo National Park, Bharatpur, India.(SACON, 2007) Prusty, Anjan Kumar B.; Azeez, P.A.The present study reports the pedological characteristics along the soil profile in a mixed habitat system (woodland. wetland and grassland) with emphasis on selected nutrient elements. alkali and alkaline earth metals, and heavy metals. The main purpose of this study was to examine the distribution pattern of nutrients, alkali and alkaline earth metals and heavy metals on a spatio- temporal scale. Soil samples collected at depths of O, 25, 50, 75 and 100 cm were examined with respect to certain select Physico-chemical parameters following standard methods and was found to differ considerably in their nutrient contents.Item Distribution and Resource use patterns of reptiles along the Teesta Valley, Eastern Himalayas, Sikkim, India.(SACON, 2007) Chettri, Basundhara; Bhupathy, S.