Conspecific Attraction and the Determination of Metapopulation Colonization Rates
Conspecific Attraction and the Determination of Metapopulation Colonization Rates
复制标题
同种吸引和复合种群定植率的确定
DOI：
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发表时间：
1990
期刊：
影响因子：
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通讯作者：
M. Peacock
中科院分区：
文献类型：
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作者：
Andrew T. Smith;M. Peacock
由于人类活动的影响，自然栖息地以及动物种群正变得越来越分散和脆弱。集合种群的概念（Levins 1970; Gilpin 1987; Harrison et al. 1988），适用于相互依赖的被占用和未被占用的栖息地的斑块，可以用来描述这些分散的种群的动态。最终目标是充分理解这些系统，以预测它们的行为并管理它们的持久性（Gilpin 1987）。集合种群动态最重要的方面之一是个体在斑块之间的流动（Gilpin 1987），但斑块之间的扩散及其随后的殖民化通常被假设为随机过程。在这里，我们建议，分散剂的行动可能会受到深刻影响的存在下，同种相邻的补丁，导致殖民化过程，可能是更确定性比以前认为的。我们提出的想法，考虑到非随机扩散和殖民模式，可以加强管理集合种群系统。集合种群的持续性是个体斑块灭绝率及其随后殖民化概率的函数（Levins 1970; Gilpin 1987）。丰富的文献概述了可能影响灭绝和殖民之间平衡的因素-
Natural habitats, hence animal populations, are becoming increasingly fragmented and vulnerable as the result of human activities. The metapopulation concept (Levins 1970; Gilpin 1987; Harrison et al. 1988), which is applied to interdependent patches of occupied and unoccupied habitat, can be used to describe the dynamics of these fragmented populations. The ultimate goal is to understand these systems well enough to predict their behavior and manage for their persistence (Gilpin 1987). One of the most important aspects of metapopulation dynamics is the flow of individuals between patches (Gilpin 1987), yet dispersal between patches and their subsequent colonization have generally been assumed to be stochastic processes. Here we propose that the actions of dispersers may be profoundly influenced by the presence of conspecifics on neighboring patches, leading to a colonization process that may be much more deterministic than was previously believed. We advance the idea that taking nonrandom dispersal and colonization patterns into account can enhance management of metapopulation systems. The persistence of metapopulations is a function of the extinction rate of individual patches and their probability of subsequent colonization (Levins 1970; Gilpin 1987). A rich literature has outlined the factors that may influence the balance between extinction and coloniza-