Pattern formation of a predator-prey system with Ivlev-type functional response

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Weiming Wang
  • Lei Zhang
  • Hailing Wang
  • Zhenqing Li

Related Research Unit(s)

Detail(s)

Original languageEnglish
Pages (from-to)131-140
Journal / PublicationEcological Modelling
Volume221
Issue number2
Online published28 Oct 2009
Publication statusPublished - 24 Jan 2010

Abstract

In this paper, we investigate the spatial pattern formation of a predator-prey system with prey-dependent functional response Ivlev-type and reaction-diffusion. The Hopf bifurcation of the model is discussed, and the sufficient conditions for the Turing instability with zero-flux boundary conditions are obtained. Based on this, we perform the spiral and the chaotic spiral patterns via numerical simulation, i.e., the evolution process of the system with the initial conditions which was small amplitude random perturbation around the steady state. For the sake of learning the pattern formation of the model further, we perform three categories of unsymmetric initial condition, and find that with these special initial conditions the system can emerge not only spiral pattern but also target pattern and so on, and the effect of these special conditions on the formation of spatial patterns is less and less with more and more iterations but the effect does not decay forever. This indicates that for prey-dependent type predator-prey system, pattern formations do depend on the initial conditions, while for predator-dependent type they do not.

Research Area(s)

  • Hopf bifurcation, Turing instability, Spatiotemporal pattern, Spiral, Target, INSTABILITIES, INVASION, DYNAMICS, ECOLOGY, CHAOS

Citation Format(s)

Pattern formation of a predator-prey system with Ivlev-type functional response. / Wang, Weiming; Zhang, Lei; Wang, Hailing et al.
In: Ecological Modelling, Vol. 221, No. 2, 24.01.2010, p. 131-140.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review