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site-specific and seasonal variation in habitat use of Eurasian otters(Lutra lutra)in western China:implications for conservation

引用

Zoological Research 2021年第6期42卷 825-833页

作者： Qiao-Yun Wang Kai-Dan Zheng Xue-Song Han Fang He Xiang Zhao Peng-Fei Fan Lu Zhang School of Life Sciences Sun Yat-Sen UniversityGuangzhouGuangdong 510275China Shan Shui Conservation Center Beijing 100871China School of Life Sciences Peking UniversityBeijing 100871China Tangjiahe National Natural Reserve GuangyuanSichuan 628109China

As a top predator,the Eurasian otter(Lutra lutra)is an indicator of healthy freshwater ecosystems and a flagship species for *** widespread in China,the species is now distributed mainly in the upper reaches of the great rivers of western ***,a lack of knowledge on local otter populations continues to hinder their conservation in ***,we conducted a detailed study on habitat use of Eurasian otters in Yushu City and Tangjiahe National Nature Reserve in western China using transect *** both study sites,otters preferred to defecate on large rocks close to or protruding from the river and about 50 cm above the *** Yushu,no spraints were found along the 5 km river bank section in the downtown area,with otters preferring sprainting sites with natural banks,riparian zones,and lower human population ***,this pattern was not obvious at Tangjiahe,where river transformation and human disturbance are *** river use intensity was negatively correlated with elevation and human population density in Yushu in both *** Tangjiahe,otter river use intensity was positively correlated with prey mass and flow rate and negatively correlated with human population in spring,but positively correlated with human population and negatively correlated with flow rate in *** results reflect the flexible habitat use strategies of otters at different sites,underlining the necessity to study otters living in different regions and habitat *** provide suggestions for river modification and call for more site-specific studies to promote otter conservation in China.

关键词： Lutra lutra sprainting site Habitat selection Conservation Local scale

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