Extinction dynamics of Lotka-Volterra ecosystems on evolving networks

被引：13
|
作者：
Coppex, F [1 ]
Droz, M
Lipowski, A
机构：
[1] Univ Geneva, Dept Phys, CH-1211 Geneva 4, Switzerland
[2] Adam Mickiewicz Univ, Fac Phys, PL-61614 Poznan, Poland
来源：
PHYSICAL REVIEW E | 2004年 / 69卷 / 06期
关键词：
D O I：
10.1103/PhysRevE.69.061901
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
We study a model of a multispecies ecosystem described by Lotka-Volterra-like equations. Interactions among species form a network whose evolution is determined by the dynamics of the model. Numerical simulations show power-law distribution of intervals between extinctions, but only for ecosystems with sufficient variability of species and with networks of connectivity above certain threshold that is very close to the percolation threshold of the network. The effect of slow environmental changes on extinction dynamics, degree distribution of the network of interspecies interactions, and some emergent properties of our model are also examined.
引用
收藏
页码：6 / 1
页数：6
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