Spatiotemporal complexity of a predator–prey system with the effect of noise and external forcing

Feng Rao, Weiming Wang and Zhenqing Li

Chaos, Solitons & Fractals, 2009, vol. 41, issue 4, 1634-1644

Abstract: In this paper, we present a spatial version of the Ivlev-type predator–prey model which contains some important factors, such as noise on predator, external periodic forcing and diffusion processes on both predator and prey. From the numerical results, we know that noise or external periodic forcing can induce instability and enhance the oscillation of the species density, and the cooperation between noise and external periodic forcing inherent to the deterministic dynamics of periodically driven models gives rise to the appearance of a rich transport phenomenology. Furthermore, we demonstrate that the spatially extended system exhibits a resonant patterns and frequency-locking phenomena. Our results show that noise and external periodic forcing play a prominent role in the predator–prey model.

Date: 2009
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Persistent link: https://EconPapers.repec.org/RePEc:eee:chsofr:v:41:y:2009:i:4:p:1634-1644

DOI: 10.1016/j.chaos.2008.07.005

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