Evolution of Mixed Dispersal in Periodic Environments
Evolution of Mixed Dispersal in Periodic Environments
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DOI：
10.3934/dcdsb.2012.17.2047
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发表时间：
2012-05
影响因子：
1.2
通讯作者：
C. Kao;Y. Lou;Wen-Min Shen
中科院分区：
文献类型：
--
作者：
C. Kao;Y. Lou;Wen-Min Shen
随机分散描述了生物在相邻空间位置之间的运动。然而，一些生物（如植物种子）的运动可以发生在非相邻的空间位置之间，因此是非局部的。我们提出了一种混合扩散策略，即随机扩散和非局部扩散的结合。更具体地说，我们假设种群中一小部分个体采用随机分散，而其余部分采用非局部分散。我们研究了这种混合扩散如何影响单一物种的入侵，以及混合扩散策略如何在空间异质性但时间恒定的环境中演变。
Random dispersal describes the movement of organisms between adjacent spatial locations. However, the movement of some organisms such as seeds of plants can occur between non-adjacent spatial locations and is thus non-local. We propose to study a mixed dispersal strategy, which is a combination of random dispersal and non-local dispersal. More specifically, we assume that a fraction of individuals in the population adopt random dispersal, while the remaining fraction assumes non-local dispersal. We investigate how such mixed dispersal affects the invasion of a single species and also how mixed dispersal strategy will evolve in spatially heterogeneous but temporally constant environment.