Singh H.S.,Aranya Bhavan |
Gibson L.,National University of Singapore
Biological Conservation | Year: 2011
Carnivores in Asia and throughout the world face high risk of extinction due to factors such as continued habitat loss and hunting. However, the Asiatic lion of Gir forest, India presents a conservation success story whose history may help to guide the recovery and conservation of other imperiled predators. Protection of core and satellite habitats and the relocation of pastoral communities and their livestock triggered forest recovery and coincident increases in native prey populations. Wild ungulate populations increased by 10-fold between 1970 and 2010, supporting an increase in the lion population from 180 animals in 1974 to 411 animals in 2010. Coincident with this increase, lions shifted their predation preferences from a diet composed of 75% livestock to one composed of just 25% livestock. This example demonstrates the value of native prey populations to sustain imperiled carnivore species, and the use of protected areas and livestock exclusion to maintain healthy prey populations. © 2011 Elsevier Ltd.
Ramesh B.R.,Institute Francais Of Pondichery Ifp |
Venugopal P.D.,Institute Francais Of Pondichery Ifp |
Venugopal P.D.,University of Maryland University College |
Pelissier R.,Institute Francais Of Pondichery Ifp |
And 4 more authors.
Biotropica | Year: 2010
We describe the mesoscale floristic patterns in the central Western Ghats of Karnataka, India, through combined analysis of woody species abundance and stand structure data from a network of ninety-six 1-ha sampling plots spread across 22,000 km2. A total of 61,906 individuals (≥10 cm gbh) comprising 400 plant species from 254 genera and 75 families were recorded. Euphorbiaceae, Rubiaceae, Lauraceae and Moraceae families constituted 23.5 percent of the total number of species encountered. The relative dominance of species was skewed with Poecilonueron indicum, Xylia xylocarpa, Terminalia tomentosa and Anogeissus latifolia being dominant in some plots. Correspondence analysis (CA) and a nonmetric multidimensional scaling (NMDS) of plots by species abundances data showed similar arching patterns, with significant correlation between the first axis of CA and NMDS (r=0.77). Hierarchical clustering of plot scores along the three first CA axes resulted in splitting the plots into five different categories that broadly reflect the major bioclimatic features of the region. A multiscale bootstrapping test indicated that categorization of the wettest (wet evergreen group 1 and 2) and driest (dry deciduous) groups were robust (P<0.05 with 1000 bootstraps), while the remaining two transitional groups were uncertain (P=0.12 and 0.26 for moist deciduous and semi-evergreen group, respectively). Principal component analysis revealed that plots with similar floristic composition can encompass contrastingly different physiognomic structures (canopy cover, canopy height and mean tree diameter) probably in relation to their levels of disturbance. Observed patterns in the floristic composition have been discussed in the light of the complex interaction between the bioclimatic and disturbance regimes that characterize the region. © 2010 The Author(s). Journal compilation © 2010 by The Association for Tropical Biology and Conservation.
Tatu K.,GEER Foundation |
Vyas V.,GEER Foundation |
Munjapara S.,GEER Foundation |
Pathak B.,GEER Foundation |
Pandey C.N.,Aranya Bhavan
Journal of the Bombay Natural History Society | Year: 2012
A state-wide survey of the Critically Endangered White-backed Vulture Gyps bengalensis and Long-billed or Indian Vulture Gyps indicus in the 26 districts of Gujarat was undertaken from May 29-30,2010. The survey was carried out throughout the state by hundreds of volunteers and personnel of the State Forest Department to determine the population of the two Gyps vulture species in all the districts and regions of the state, and to assess changes in their populations through comparison with the earlier surveys done in 2005 and 2007. Total count method was used, and the counts were made at resting, roosting, feeding, and nesting sites to assess the population size, number of young birds, and the nest-tree availability. The survey resulted in an estimated population of 793 White-backed Vulture (WBV) and 265 Long-billed Vulture (LBV); the identity of 7 individuals was uncertain. When compared with the earlier surveys, it revealed that there has been a 62.9% decrease (-1,342 individuals) in the population of WBV and 29.5% reduction (-111 individuals) in the population of LBV within a time span of 5 years. © Bombay Natural History Society 2012.