Landscape effects on the population dynamics of the fossorial form of the water vole (Arvicola terrestris sherman)

详细信息    查看全文

• 作者：Rémi Duhamel ; Jean-Pierre Quéré ; Pierre Delattre and Patrick Giraudoux
• 关键词：management ; pluriannual fluctuation ; rodent ; source ; sink ; space use
• 刊名：Landscape Ecology
• 出版年：2000
• 出版时间：2000
• 年：2000
• 卷：15
• 期：2
• 页码：89-98
• 全文大小：163 KB
• 刊物类别：Biomedical and Life Sciences
• 刊物主题：Life Sciences
  Landscape Ecology
  Plant Ecology
  Forestry Management
  Forestry
  Ecology
  Plant Sciences
  
• 出版者：Springer Netherlands
• ISSN：1572-9761

文摘

The dynamics of microtine rodents show large variations among species and even among populations of a single species. Several studies have shown that landscape structure and predation play a role in these variations. We studied the influence of landscape structure on the spatial distribution and the population dynamics of the fossorial form of the water vole (Arvicola terrestris sherman). The sampling was based on a preliminary five-year survey of a rodent cycle on a regional scale, as well as a method of abundance estimation using surface indices. This survey led to distinguishing epicentres where outbreaks started, and diffusion sections where outbreaks occurred later. Results showed differences in dynamics of spatial distribution of the vole colonies between these two types of sections. This distribution pattern is related to landscape composition and structure. Epicentres are characterized by a higher ratio of open landscape, a lower ratio of forest, and less fragmentation when compared to the diffusion sections. Therefore landscape analysis has the potential of providing a valuable framework for the designing of programs for the early control of A. terrestris populations.