期刊
PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS
卷 314, 期 1-4, 页码 120-124出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/S0378-4371(02)01173-1
关键词
stochastic processes; nonlinear phenomena; population dynamics
The transient dynamics of interacting biological species extracted from two ecosystems is investigated. We model the environment interaction by a multiplicative noise and the temperature oscillations by a periodic forcing. We find noise-induced effects such as enhanced temporal oscillations, spatial patterns and noise delayed extinction for the model of two competing species. We extend our analysis to an ecosystem of three interacting species, namely one predator and two preys. We find spatial patterns induced by the noise. (C) 2002 Elsevier Science B.V. All rights reserved.
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