期刊
ECOLOGICAL MODELLING
卷 222, 期 18, 页码 3449-3452出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.ecolmodel.2011.07.002
关键词
Prey-predator model; Spatial pattern; Turing instability; Diffusive instability; Dispersal
类别
The emergence of inhomogeneities in the distributions of the abundances of spatially extended prey-predator systems is investigated. The method of analysis, based on the notion of diffusive (Turing) instability, is systematically applied to nine different models obtained by introducing an extra-factor into the standard Rosenzweig-MacArthur prey-predator model. The analysis confirms that the standard model is critical in the context of Turing instability, and that the introduction of any small amount of the extra-factor can easily promote or inhibit the emergence of spatial patterns. (C) 2011 Elsevier B.V. All rights reserved.
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