Evolutionary dynamics and competition stabilize three-species predator-prey communities

被引：3
|
作者：
Chen, Sheng [1 ,2 ]
Dobramysl, Ulrich [3 ]
Tauber, Uwe C. [1 ,2 ]
机构：
[1] Virginia Tech, Dept Phys MC 0435, Robeson Hall,850 West Campus Dr, Blacksburg, VA 24061 USA
[2] Virginia Tech, Ctr Soft Matter & Biol Phys, Robeson Hall,850 West Campus Dr, Blacksburg, VA 24061 USA
[3] Univ Cambridge, Wellcome Trust Canc Res UK Gurdon Inst, Cambridge CB2 1QN, England
来源：
ECOLOGICAL COMPLEXITY | 2018年 / 36卷
关键词：
Evolutionary dynamics; Interspecific competition; Lotka-Volterra model; Multi-species coexistence; Character displacement; LATTICE-GAS MODEL; CHARACTER DISPLACEMENT; OSCILLATORY BEHAVIOR; FLUCTUATIONS; POPULATION; TRANSITION; COEXISTENCE; ABUNDANCE;
D O I：
10.1016/j.ecocom.2018.05.003
中图分类号：
Q14 [生态学（生物生态学）];
学科分类号：
071012 ; 0713 ;
摘要：
We perform individual-based Monte Carlo simulations in a community consisting of two predator species that compete for a single prey species, with the purpose of studying biodiversity stabilization in this simple model system. Predators are characterized with predation efficiency and death rates, to which evolutionary adaptation is introduced. Competition for limited prey abundance drives the populations' optimization with respect to predation efficiency and death rates. We study the influence of various ecological elements on the final state, finding that both indirect competition and evolutionary adaptation are insufficient to yield a stable ecosystem. However, (quasi-stable) three-species coexistence is observed when direct interaction between the two predator species is implemented.
引用
收藏
页码：57 / 72
页数：16
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