Abstract

In this article, we study the global dynamics of a discrete two-dimensional competition model. We give sufficient conditions on the persistence of one species and the existence of local asymptotically stable interior period-2 orbit for this system. Moreover, we show that for a certain parameter range, there exists a compact interior attractor that attracts all interior points except Lebesgue measure zero set. This result gives a weaker form of coexistence which is referred to as relative permanence. This new concept of coexistence combined with numerical simulations strongly suggests that the basin of attraction of the locally asymptotically stable interior period-2 orbit is an infinite union of connected components. This idea may apply to many other ecological models. Finally, we discuss the generic dynamical structure that gives relative permanence.

Original languageEnglish (US)
Pages (from-to)358-376
Number of pages19
JournalJournal of biological dynamics
Volume6
Issue number2
DOIs
StatePublished - Mar 1 2012

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Keywords

  • basin of attraction
  • period-2 orbit
  • permanence
  • relative permanence
  • uniformly persistent

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Ecology

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