文章基本信息

标题：Dispersal altering local states has a limited effect on persistence of a metapopulation
本地全文：下载
作者：Jingjing Xu ; Geoff Wild
期刊名称：Journal of Biological Dynamics
印刷版ISSN：1751-3758
电子版ISSN：1751-3766
出版年度：2018
卷号：12
期号：1
页码：455-470
DOI：10.1080/17513758.2018.1469791
出版社：Taylor & Francis
摘要：Metapopulations are collections of local populations connected by dispersal. Metapopulation models often assume would-be colonists affect the states of local populations they disperse from and those they disperse to. Here, we build a new framework to include that effect and to assess the impact of dispersal. Our model predicts that a metapopulation will, in general, be found either in the state of global extinction or in the state of persistence. Our key finding is that dispersal, and the state changes associated with dispersal, have significant qualitative and quantitative effects on long-term dynamics only in a narrow range of parameter space. We conclude that life history features other than dispersal (e.g. mortality rate) have a greater influence over metapopulation persistence. We discuss the implications of our results for conservation biology, the future application of our model to the study of cooperative breeding, as well as our model's limitations.
关键词：Allee effect ; differential equations ; extinction–recolonization ; fragmented habitat ; tipping point