%0 Journal Article
%T The ecological effects of biological invasions on birds<br>生物入侵对鸟类的生态影响
%A Xiaojing Gan
%A Bo Li
%A Jiakuan Chen
%A Zhijun Ma
%A <br>干晓静
%A 李博
%A 陈家宽
%A 马志军
%J 生物多样性
%D 2007
%I Science Press
%X Biological invasion is recognized as one of the greatest threats to the global biodiversity because invasive exotic species not only alter the local environments but also have serious ecological effects on native species. Birds are positioned at high trophic level within the food web in the ecosystem,and thus any changes within the system can affect the birds in one way or another. The ecological effects of different exotic taxa like mammals,birds,invertebrates and plants on native birds are reviewed in this paper. In summary,the ex-otic species can affect native bird species in four main ways,1) predation of birds or eggs by the exotic mammals; 2) competition for habitats and foods with exotic birds,and loss of genetic diversity by hybridiza-tion with the closely-related exotic species; 3) direct and indirect alterations of native habitats and food re-sources,and predation by the exotic invertebrates; and 4) loss and fragmentation of habitats for native birds through altering species composition and structure of native plant communities by exotic plants. The un-solved questions and future research directions in this field are also addressed.
%K biological invasion
%K ecological effects
%K invasive species
%K bird<br>生物入侵
%K 生态影响
%K 入侵种
%K 鸟类
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=284A3BE2D09272C2DA95716775015427&aid=F52CB45F7997F9BA&yid=A732AF04DDA03BB3&vid=23CCDDCD68FFCC2F&iid=94C357A881DFC066&sid=E5D85F291CED2DA6&eid=2E15A588990CC690&journal_id=1005-0094&journal_name=生物多样性&referenced_num=1&reference_num=87