Ideal free dispersal in integrodifference models

Ideal free dispersal in integrodifference models
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积分差异模型中的理想自由分散

DOI:
10.1007/s00285-022-01743-1
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发表时间:
2022
影响因子:
1.9
通讯作者:
Zhou, Ying
Zhou, Ying
中科院分区:
数学4区
文献类型:
--
作者:
Cantrell, Robert Stephen;Cosner, Chris;Zhou, Ying

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在本文中,我们使用积分差分方程模型和成对入侵分析,找到什么样的扩散策略是进化稳定的策略(也称为进化稳定或ESS)时,有空间异质性和可能的季节性变化的栖息地适合性。在这种情况下,分散的好处和坏处都有。我们开始的情况下,所有的空间位置可以支持一个可行的人口,然后考虑的情况下,有不可行的地区的栖息地。如果生存区域随季节变化,夏季和冬季的生存区域不重叠,扩散可能确实是维持种群的必要条件。我们的研究结果与文献中以前的研究结果基本一致,这些研究结果是基于其他建模框架的,即与理想自由分布相关的分散策略是进化稳定的。在只有一部分的栖息地可以维持人口的情况下,我们表明,一个部分占领理想的自由分布,只占用可行的区域与扩散策略,是进化稳定的。在以前的一些作品中,这些结果的证明利用线和对称函数的性质,这是类似于线和对称矩阵,但适用于积分算子。
In this paper, we use an integrodifference equation model and pairwise invasion analysis to find what dispersal strategies are evolutionarily stable strategies (also known as evolutionarily steady or ESS) when there is spatial heterogeneity and possibly seasonal variation in habitat suitability. In that case there are both advantages and disadvantages of dispersing. We begin with the case where all spatial locations can support a viable population, and then consider the case where there are non-viable regions in the habitat. If the viable regions vary seasonally, and the viable regions in summer and winter do not overlap, dispersal may really be necessary for sustaining a population. Our findings generally align with previous findings in the literature that were based on other modeling frameworks, namely that dispersal strategies associated with ideal free distributions are evolutionarily stable. In the case where only part of the habitat can sustain a population, we show that a partial occupation ideal free distribution that occupies only the viable region is associated with a dispersal strategy that is evolutionarily stable. As in some previous works, the proofs of these results make use of properties of line sum symmetric functions, which are analogous to those of line sum symmetric matrices but applied to integral operators.
DOI: 10.1007/bf00171515
发表时间: 1990-01-01
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