Appropriate formulations for dispersal in spatially structured models: Comments on Bascompte & Sole
Appropriate formulations for dispersal in spatially structured models: Comments on Bascompte & Sole
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DOI：
10.2307/5808
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发表时间：
1995
影响因子：
4.8
通讯作者：
M. Hassell;O. Miramontes;P. Rohani;R. May
中科院分区：
文献类型：
--
作者：
M. Hassell;O. Miramontes;P. Rohani;R. May
N，+，= N，（1 + aN，）。这里N是连续世代的种群密度，t和t+ 1，A是种群的有限增长率，a和#是定义密度依赖生存的常数。如图1a所示，该模型的稳定性仅取决于A和ft。Bascompte & Sole（以下简称为“B& S”）将该模型应用于一个网格或一系列当地种群，并将其与四个最近的邻居联系起来，目的是探索这种空间结构如何影响种群动态。使用耦合映射格形式主义（Kaneko 1993），他们将他们的模型表示为：
N, +, = N,(1 + aN,). eqn 1 Here N is the population density in successive generations, t and t+ 1, A is the finite rate of increase of the population, and a and # are constants defining the density-dependent survival. The stability properties of this model hinge solely on A and ft, as shown in Fig. 1 a. Bascompte & Sole (henceforth referred to as 'B&S') applied this model to a grid or array of local populations which they linked with dispersal to four nearest neighbours, with the aim of exploring how such spatial structure affects the population dynamics. Using the Coupled Map Lattice formalism (Kaneko 1993), they express their model as: