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Bhupathy, Subramanian
- Distribution and Conservation Status of the Caenophidian Snake, Xylophis captaini Gower & Winkler, 2007 in the Western Ghats, India
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Authors
Affiliations
1 Salim Ali Centre for Ornithology and Natural History, Anaikatti (PO), Coimbatore 641 108, IN
2 Department of Zoology, St. Thomas College, Thrissur 680 001, IN
1 Salim Ali Centre for Ornithology and Natural History, Anaikatti (PO), Coimbatore 641 108, IN
2 Department of Zoology, St. Thomas College, Thrissur 680 001, IN
Source
Current Science, Vol 110, No 5 (2016), Pagination: 908-912Abstract
We update the distribution of the little known Captain's Wood Snake (Xylophis captaini) in the Western Ghats, based on new observations and collation of the literature. The Maximum Entropy (MaxEnt) algorithm was used to predict the distribution of the species, which showed potential sites south of 10°N and elevations between 50 and 1000 m amsl. Xylophis captaini is listed as 'Least Concern' under IUCN criteria, and we suggest the possible elevation of its status to the 'Near-Threatened' category on account of its narrow distributional range and general lack of data on its ecology. The present study highlights the utility of niche models in assessing the distribution of cryptic and little known species in biodiversity-rich areas such as the Western Ghats.Keywords
Agasthyamalai Biosphere Reserve, Captain’s Wood Snake, Ecological Niche Modelling, Endemic Species.Full Text
- Determinants of Occupancy and Burrow Site Selection by Indian Crested Porcupine in Keoladeo National Park, Bharatpur, Rajasthan, India
Abstract Views :233 |
PDF Views:97
Authors
Affiliations
1 Salim Ali Centre for Ornithology and Natural History, Anaikatty (Post), Coimbatore 641 108, IN
1 Salim Ali Centre for Ornithology and Natural History, Anaikatty (Post), Coimbatore 641 108, IN
Source
Current Science, Vol 112, No 12 (2017), Pagination: 2440-2448Abstract
We examined factors responsible for spatial occupancy and burrow site selection for permanent occupancy by Indian crested porcupine in Keoladeo National Park, Bharatpur, Rajasthan, India. We employed occupancy framework to examine a priori hypotheses and to obtain detection histories of faecal droppings and burrow occurrence. The detection probability (0.19 ± 0.05SE) and occupancy (0.28 ± 0.05SE) of burrow sites were lower than those of faecal deposits (0.33 ± 0.029SE and 0.71 ± 0.06SE) respectively. The rodents avoided areas with water cover and selected those closer to the boundary of nearby agricultural fields at higher elevation as burrow sites. None of the considered covariates influenced their spatial occupancy. This study infers the strategic placement of burrows by these apex ecosystem engineers, also providing crucial ecological niche for various other co-occupants.Keywords
Burrows, Hystrix indica, Occupancy Modelling, Site Selection, Spatial Occupancy.Full Text
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