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Entropy 2017, 19(6), 258; doi:10.3390/e19060258

Self-Organized Patterns Induced by Neimark-Sacker, Flip and Turing Bifurcations in a Discrete Predator-Prey Model with Lesie-Gower Functional Response

Research Center for Engineering Ecology and Nonlinear Science, North China Electric Power University, Beijing 102206, China
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Academic Editor: Gunnar Pruessner
Received: 19 April 2017 / Revised: 22 May 2017 / Accepted: 1 June 2017 / Published: 7 June 2017
(This article belongs to the Special Issue Complex Systems, Non-Equilibrium Dynamics and Self-Organisation)
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Abstract

The formation of self-organized patterns in predator-prey models has been a very hot topic recently. The dynamics of these models, bifurcations and pattern formations are so complex that studies are urgently needed. In this research, we transformed a continuous predator-prey model with Lesie-Gower functional response into a discrete model. Fixed points and stability analyses were studied. Around the stable fixed point, bifurcation analyses including: flip, Neimark-Sacker and Turing bifurcation were done and bifurcation conditions were obtained. Based on these bifurcation conditions, parameters values were selected to carry out numerical simulations on pattern formation. The simulation results showed that Neimark-Sacker bifurcation induced spots, spirals and transitional patterns from spots to spirals. Turing bifurcation induced labyrinth patterns and spirals coupled with mosaic patterns, while flip bifurcation induced many irregular complex patterns. Compared with former studies on continuous predator-prey model with Lesie-Gower functional response, our research on the discrete model demonstrated more complex dynamics and varieties of self-organized patterns. View Full-Text
Keywords: flip bifurcation; Neimark-Sacker bifurcation; Turing bifurcation; pattern formation; predator-prey system flip bifurcation; Neimark-Sacker bifurcation; Turing bifurcation; pattern formation; predator-prey system
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Zhang, F.; Zhang, H.; Ma, S.; Meng, T.; Huang, T.; Yang, H. Self-Organized Patterns Induced by Neimark-Sacker, Flip and Turing Bifurcations in a Discrete Predator-Prey Model with Lesie-Gower Functional Response. Entropy 2017, 19, 258.

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