Alternative causes for range limits: a metapopulation perspective
Alternative causes for range limits: a metapopulation perspective
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DOI：
10.1046/j.1461-0248.2000.00116.x
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发表时间：
2000-01-01
期刊：
影响因子：
8.8
通讯作者：
Keitt, TH
中科院分区：
文献类型：
--
作者：
Holt, RD;Keitt, TH
所有物种在广泛的地理范围内都有有限的分布。在地方尺度上，许多物种的分布受到栖息地可用性、地方保护和殖民动态这三个因素的相互作用的影响。我们使用标准的Les ins集合种群模型来说明这三个因素的梯度如何产生物种的范围限制。我们认为，这三条路线的范围限制有根本不同的进化含义。由于Levins模型对当地种群的空间耦合做出了简化假设，我们提出了空间显式集合种群模型的数值研究，以补充分析模型。这三条通往射程极限的路线产生了不同的时空模式。一个物种的范围限制也可能是由于环境梯度对其他物种的影响而产生的。我们简要地讨论了一个捕食者-猎物的例子，它说明了间接路线的范围限制在metacompatibility的上下文中。
All species have limited distributions at broad geographical scales. At local scales, the distribution of many species is influenced by the interplay of the three factors of habitat availability, local extinctions and colonization dynamics. We use the standard Les ins metapopulation model to illustrate how gradients in these three factors can generate species' range limits. We suggest that the three routes to range limits have radically different evolutionary implications. Because the Levins model makes simplifying assumptions about the spatial coupling of local populations, ave present numerical studies of spatially explicit metapopulation models that complement the analytical model. The three routes to range limits give rise to distinct spatiotemporal patterns. Range limits in one species can also arise because of environmental gradients impinging upon other species. We briefly discuss a predator-prey example, which illustrates indirect routes to range limits in a metacommunity context.