PhD Theses (SACON)

Now showing 1 - 5 of 5

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.
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 2004
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.
Distribution and Resource use patterns of reptiles along the Teesta Valley, Eastern Himalayas, Sikkim, India.
(SACON, 2007) Chettri, Basundhara; Bhupathy, S.
DIVERSITY AND DISTRIBUTION OF BIRDS IN BHARATHAPUZHA RIVER BASIN, KERALA
(SACON, 2024) P N , Anoop Raj; Kumara, H N
Bharathapuzha also known as the Nila River is the second-longest river in Kerala. It is considered as one of the most important rivers in Kerala for its ecological, cultural, and historical importance. Thus, it is known as the cradle of civilisation in Kerala. This river originates from the northern and southern rims of the Palakkad Gap. It flows towards the west through the Coimbatore district in Tamil Nadu and the Palakkad, Thrissur, and Malappuram, districts of Kerala before draining into the Arabian Sea. The river's total length is 209 km with a drainage area of 6186 km2. Chitturpuzha, Kalpathipuzha Gayathripuzha, and Thoothapuzha are major tributaries of this river. Birds are considered as indicators of habitat quality. They play an important role as predators, prey, pollinators and scavengers in nature. Understanding the natural bird assemblage, its patterns, and its process will help prioritize the potential conservation areas. Many researchers have attempted to study bird communities in the different habitats in the Western Ghats. Their observations on birds provided useful information to understand the distribution trend of birds. Most of such studies focused on the forest ecosystems in the protected area network. Understanding the distribution pattern of birds and their drivers in highly disturbed ecosystems outside the protected area network is less attempted. From the origin to the mouth, the river passes through various ecosystems and topographic conditions. Bharathapuzha originates and runs through forest ecosystems in the Western Ghats hill ranges initially, then travels through various human habitations, and agrarian lands and finally reaches the Arabian Sea. So, it supports bird communities of different forest ecosystems, agrarian lands, water bodies, and human habitations including the urban areas. Most of these ecosystems are located outside the protected area network and are vulnerable to anthropogenic pressures. Deforestation in the hill region, construction of check dams, indiscriminate sand mining, the spread of weeds and invasive plants inside the river channel, expansion of monoculture plantations, encroachment and water pollution are the major threats to the river ecosystem. This study attempted to understand the patterns of avifaunal assemblage in the Bharathapuzha river basin which is highly disturbed due to anthropogenic pressures that destroyed the riverine habitats, water quality, and natural water flow.

PhD Theses (SACON)

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