Non-local interaction effects in models of interacting populations

被引:3
|
作者
Simoy, Mario I. [1 ,2 ]
Kuperman, Marcelo N. [3 ,4 ,5 ]
机构
[1] UNSa, Inst Invest Energia No Convenc, CONICET, Salta, Argentina
[2] UNCPBA, Inst Multidisciplinario Ecosistemas & Desarrollo S, CICPBA, Tandil, Argentina
[3] FiEstIn, Ctr Atom Bariloche, Gerencia Fis, San Carlos De Bariloche, Argentina
[4] Univ Nacl Cuyo, Inst Balseiro, San Carlos De Bariloche, Argentina
[5] Consejo Nacl Invest Cient & Tecn, San Carlos De Bariloche, Argentina
关键词
Population dynamics; Nonlocal interaction; Pattern formation; Competition model; Prey-predator model; PATTERN-FORMATION; COMPETITION; DYNAMICS; COEXISTENCE; EXCLUSION;
D O I
10.1016/j.chaos.2022.112993
中图分类号
O1 [数学];
学科分类号
0701 ; 070101 ;
摘要
We consider a couple of models for the dynamics of the populations of two interacting species, inspired by Lotka-Volterra's classical equations. The main feature of this work is that the interaction terms are non local and the interactions occur within a bounded range. These terms include the competitive intraspecific interaction among individuals and the interspecific terms for which we consider two cases: Competition and predation. The results show that not only the non-locality induces spatial structures but also allows for the survival of the species when due to predation or the competitive exclusion extinction was expected, and even promotes spatio-temporal patterns not linked to eventual temporal oscillations in the local case. In this work, we also explore some interesting details about the behavior of the population dynamics that shows spatial patterns that interfere in a way that leads to non-trivial results. In this way, we complement and extend some results obtained in previous works.
引用
收藏
页数:10
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