Invasive alien species disrupt spatial and temporal ecology and threaten extinction in an insular, small mammal community

摘要: The impact of invasive bank vole (Myodes glareolus) and greater white-toothed shrew (Crocidura russula) on indigenous Irish small mammals, varies with season habitat. We caught voles in deciduous woodland, young coniferous plantations open habitats such as rank grass. was absent from woods but did use low level cover addition to field margins. Numbers both species margins during summer were higher than the previous spring. wood mouse (Apodemus sylvaticus) pygmy (Sorex minutus), differed degrees negative response species. Wood mice hedgerows had reduced recruitment lower peak abundance. This effect less extreme where present. numbers along significantly depressed by presence no woodland or plantations. Summer shrews voles. Where present, entirely Species replacement due mammals is occurring their major habitat i.e. there good ground cover. Pygmy will probably disappear these throughout Ireland. possibly may survive conifer Mitigation impacts should include expansion which native can survive.