Evolution of anisotropic diffusion in two-dimensional heterogeneous environments
Evolution of anisotropic diffusion in two-dimensional heterogeneous environments
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DOI：
10.1007/s00285-021-01579-1
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发表时间：
2020-02
影响因子：
1.9
通讯作者：
E. Bouin;G. Legendre;Y. Lou;Nichole Slover
中科院分区：
文献类型：
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作者：
E. Bouin;G. Legendre;Y. Lou;Nichole Slover
我们考虑二维异质环境中两个竞争种群的系统。假设人口以不同的概率水平和垂直移动，但在其他方面是相同的。我们把这些概率看作分散策略。我们表明，进化稳定的策略是只向一个方向移动。我们的研究结果预测，选择资源分布变化较小的方向对物种更有利。这一发现似乎与Hastings（1983）和Dockery等人（1998）关于缓慢扩散进化的经典结果一致。在空间异质环境中选择随机扩散。这些结论还表明，对于异质生境的迁移，应考虑更广泛的分散策略。
We consider a system of two competing populations in two-dimensional heterogeneous environments. The populations are assumed to move horizontally and vertically with different probabilities, but are otherwise identical. We regard these probabilities as dispersal strategies. We show that the evolutionarily stable strategies are to move in one direction only. Our results predict that it is more beneficial for the species to choose the direction with smaller variation in the resource distribution. This finding seems to be in agreement with the classical results of Hastings (1983) and Dockery et al. (1998) for the evolution of slow dispersal,i.e.random diffusion is selected against in spatially heterogeneous environments. These conclusions also suggest that broader dispersal strategies should be considered regarding the movement in heterogeneous habitats.