文章基本信息

标题：Global dynamics of a discrete two-species Lottery-Ricker competition model
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作者：Yun Kang ; Hal Smith
期刊名称：Journal of Biological Dynamics
印刷版ISSN：1751-3758
电子版ISSN：1751-3766
出版年度：2012
卷号：6
期号：2
页码：358-376
DOI：10.1080/17513758.2011.586064
出版社：Taylor & Francis
摘要：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.
关键词：basin of attraction; period-2 orbit; uniformly persistent; permanence; relative permanence