Large manipulative experiments reveal complex effects of food supplementation on population dynamics of Brandt's voles

作     者：Baofa Yin Guoliang Li Xinrong Wan Guozhen Shang Wanhong Wei Zhibin Zhang 

作者机构：State Key Laboratory of Integrated Management of Pest Insects and RodentsInstitute of ZoologyChinese Academy of Sciences College of Bioscience and BiotechnologyYangzhou University 

出 版 物：《Science China(Life Sciences)》 (中国科学（生命科学英文版）)

年 卷 期：2017年第60卷第8期

页      面：911-920页

核心收录：

学科分类：07[理学] 0713[理学-生态学] 

基　　金：supported by National Basic Research Program of China(2007CB109102) 

主　　题：demographic parameters direct and indirect effects food quantity and quality food supplementation plant communitycomposition population dynamics recruitment survival voles 

摘      要：Although food supplementation is well known to increase population density,there is still debate on the causative effects of food supplementation on reproduction,survival,and *** manipulative experiments,which exclude any confounding effects of dispersal and predation,are essential for clarifying the *** this study,we investigated the effects of food supplementation on Brandt s vole population dynamics and plant community in eight large enclosures(0.48 ha each) from2010 to *** supplementation showed significant positive effects on population density due to increases in recruitment;however,it showed a complex effect on survival of voles:positive in non-breeding seasons,but negative in breeding *** addition,food supplementation increased the quality of plants(as reflected by increased crude protein content),but decreased the quantity of less preferred plants in experimental ***,food seems to have direct positive effects on small rodents through improvement of food supply and indirect negative effects through food-induced density-dependent effects,and may have long-term effects on rodents through altering plant community composition and abundance.