Neutral Models with Generalised Speciation
Neutral Models with Generalised Speciation
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DOI：
10.1007/s11538-009-9411-0
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发表时间：
2009-08-01
影响因子：
3.5
通讯作者：
Etienne, Rampal S.
中科院分区：
文献类型：
--
作者：
Haegeman, Bart;Etienne, Rampal S.
哈贝尔的中性理论声称，物种丰度分布等生态模式可以通过一个基于简单假设的随机模型来解释。这些假设之一，点突变假设，表明每个个体都有相同的物种形成概率。Etienne等人。他们认为关于物种形成过程的其他假设可能更现实，例如，每个物种都有相同的物种形成概率(Etienne等人)。载于Oikos 116：241-258,2007)。他们引入了一些具有不同物种形成过程的中性群落模型，并推测了其固定物种丰度分布的公式。在这里，我们研究了一个包含这些修正模型的广义中性群落模型，并推导出它的平稳分布，从而证明了猜想公式。
Hubbell's neutral theory claims that ecological patterns such as species abundance distributions can be explained by a stochastic model based on simple assumptions. One of these assumptions, the point mutation assumption, states that every individual has the same probability to speciate. Etienne et al. have argued that other assumptions on the speciation process could be more realistic, for example, that every species has the same probability to speciate (Etienne, et al. in Oikos 116:241-258, 2007). They introduced a number of neutral community models with a different speciation process, and conjectured formulas for their stationary species abundance distribution. Here we study a generalised neutral community model, encompassing these modified models, and derive its stationary distribution, thus proving the conjectured formulas.