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Fragility of Chaos in Multispecies Competition Influenced by Predation

[+] Author Affiliations
Lei Zhao, Huayong Zhang, Tousheng Huang, Xinqiang Zhu

North China Electric Power University, Beijing, P.R. China

Lu Han

University of Regina, Regina, SK, Canada

Paper No. IMECE2010-40772, pp. 377-381; 5 pages
  • ASME 2010 International Mechanical Engineering Congress and Exposition
  • Volume 8: Dynamic Systems and Control, Parts A and B
  • Vancouver, British Columbia, Canada, November 12–18, 2010
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-4445-8
  • Copyright © 2010 by ASME


In order to study the stability of chaotic behaviors, a nonlinear dynamical model of the competing multispecies with a predator is investigated. A series of numerical simulations is demonstrated via wave diagram and phase diagram. The results show that the chaos can change into either oscillation or ordinary equilibrium as the attacking rate of the predator increases. Moreover, chaos in the system becomes fragile and even vanishes when the attacking rate reaches 0.0186. This study also exhibits the transformation in phase diagram from a strange attractor to a stable equilibrium.

Copyright © 2010 by ASME
Topics: Chaos



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