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原文連結
論文資訊
- 類型：已發表論文
- 日期：2017-11-27
摘要
The frequency of genes in interconnected 族群s and of 物種 in interconnected communities are affected by similar processes, such as birth, death and immigration. The equilibrium distribution of gene frequencies in structured 族群s is known since the 1930s, under Wright's meta族群 model known as the island model. The equivalent distribution for the 物種 frequency (i.e. the 物種 proportional abundance distribution (SPAD)), at the metacommunity level, however, is unknown. In this contribution, we develop a 隨機 model to analytically account for this distribution (SPAD). We show that the same as for genes SPAD follows a beta distribution, which provides a good description of empirical data and applies across a continuum of scales. This 隨機 model, based upon a 擴散 approximation, provides an alternative to neut
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