Theoretical models of species' borders: single species approaches
Theoretical models of species' borders: single species approaches
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DOI：
10.1111/j.0030-1299.2005.13147.x
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发表时间：
2005-01-01
期刊：
影响因子：
3.4
通讯作者：
Taper, ML
中科院分区：
文献类型：
--
作者：
Holt, RD;Keitt, TH;Taper, ML
限制物种在空间分布的潜在机制的范围几乎与生命本身的多样性一样多样和复杂。然而，抽象地看，一个物种的边界是一个物种的人口对空间和时间变化的世界的地理表现。人口动态模型提供了对不同路线的洞察力，通过这些路线，由于人口比例的梯度，范围限制可能会出现。例如，在集合种群的背景下，范围限制可能是由灭绝率、殖民率或栖息地可用性的梯度引起的。我们认为入侵模型在统一和异质环境中作为一个框架，了解非平衡的范围限制，并探讨条件下，入侵可能会停止传播留下一个固定的范围限制。我们的结论是，非平衡范围动态需要进一步的理论和实证的关注。
The range of potential mechanisms limiting species' distributions in space is nearly as varied and complex as the diversity of life itself. Yet viewed abstractly, a species' border is a geographic manifestation of a species' demographic responses to a spatially and temporally varying world. Population dynamic models provide insight into the different routes by which range limits can arise owing to gradients in demographic rates. In a metapopulation context, for example, range limits may be caused by gradients in extinction rates, colonization rates or habitat availability. We have consider invasion models in uniform and heterogeneous environments as a framework for understanding non-equilibrium range limits, and explore conditions under which invasions may cease to spread leaving behind a stationary range limit. We conclude that non-equilibrial range dynamics need further theoretical and empirical attention.