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Issue:ISSN 1000-7083
          CN 51-1193/Q
Director:Sichuan Association for Science and Technology
Sponsored by:Sichuan Society of Zoologists; Chengdu Giant Panda Breeding Research Foundation; Sichuan Association of Wildlife Conservation; Sichuan University
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Your Position :Home->Past Journals Catalog->2011 Vol.30 No.2

Summer Habitat Selection by Eothenomys melanogaster in Tangjiahe Nature Reserve, Sichuan Province
Author of the article:LI Yun-xi1, ZHANG Ze-jun1*, SUN Yi-ran1, CHEN Li-min2, PENG Shi-yang2, YANG Xue-gui1, HU Jin-chu1
Author's Workplace:(1. Institute of Rare Animals and Plants, China West Normal University, Nanchong, Sichuan Province 637002, China; 2. Tangjiahe National Nature Reserve, Qingchuan, Sichuan Province 628109, China)
Key Words:Eothenomys melanogaster; microhabitat; food; concealment conditions; Tangjiahe National Nature Reserve
Abstract:Habitat selection research is one of the important elements in wildlife management. From June to Auguest 2009, we studied the habitat selection of Eothenomys melanogaster using line transects and systematic samplingin Tangjiahe Nature Reserve, Sichuan province, China. Twenty-one environmental variables potentially influencing microhabitat selection by the animal were measured, which included altitude, slope, and vegetation. In univariate analysis, 16 variables were significantly different between the habitat and control plots, which indicated a significant habitat preference of E. melanogaster.E. melanogaster preferred a southerly aspect, an earlier stage of vegetative succession, lower altitude, shorter trees and bamboo, nearby water source, lower tree canopy, smaller diameters of trees, lower densities of bamboo and lower coverage of forest floor; however, higher herb, herbaceous cover, density and shrub density were larger habitatsin the summer. However, only 2 variables were entered into the logistic regression equation, namely grass cover and slope aspect, which indicated that they are the best indicators to discriminate habitat plots from control ones. Food abundance and predation pressures were perhaps the two primary factors that determined microhabitat selectionby the animals. Resource selection function was constructed as a log-linear mode: logit(P)=8.027+2.792×grass cover +0.325×slope aspect. From this model, we can estimate the habitat selection probability as P=elogit(P)/(1+elogit( P)), which could be used to predict spatial distribution of the animal during the summer in the reserve.
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