Turing instability and pattern induced by cross-diffusion in a predator-prey system with Allee effect

Turing instability and pattern induced by cross-diffusion in a predator-prey system with Allee effect
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具有 Allee 效应的捕食者-被捕食者系统中交叉扩散引起的图灵不稳定性和模式

DOI:
10.1016/j.amc.2015.11.067
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发表时间:
2016-02
影响因子:
4
通讯作者:
Zhang Tonghua
Zhang Tonghua
中科院分区:
数学2区
文献类型:
--
作者:
Peng Yahong;Zhang Tonghua

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In this paper, we first propose a mathematical model for a spatial predator-prey system with Allee effect. And then by using the proposed model, we investigate the Turing instability and the phenomena of pattern formation. We show how cross-diffusion destabilizes the spatially uniform steady state. The method of multiple time scales is employed to derive the amplitude equations, which is the cubic Stuart-Landau equation in the supercritical case and the quintic in the subcritical case. Based on the amplitude equations, we obtain the asymptotic solutions of the model close to the onset of instability.
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