Does mutual interference always stabilize predator-prey dynamics? A comparison of models

被引:61
作者
Arditi, R [1 ]
Callois, JM [1 ]
Tyutyunov, Y [1 ]
Jost, C [1 ]
机构
[1] Inst Natl Agron Paris Grignon, Ecol Populat & Communautes, F-75231 Paris 05, France
关键词
trophic interactions; population dynamics; functional response; predator-dependence; ratio-dependence; enrichment;
D O I
10.1016/j.crvi.2004.06.007
中图分类号
Q [生物科学];
学科分类号
07 ; 0710 ; 09 ;
摘要
Based on a qualitative analysis of ODE systems, the dynamic properties of alternative predator-prey models with predator-dependent functional response have been compared in order to study the role that predator interference plays in the stabilisation of trophic systems. The models considered for interference have different mathematical expressions and different conceptual foundations. Despite these differences, they give essentially the same qualitative results: when interference is low, increasing it has a positive effect on asymptotic stability and thus on the resilience of the biological system. When it is high, it is the contrary (with logistic prey growth, increasing the interference parameter ensures stability but leads to very small predator densities). Possible consequences on the evolution of the interference level in real ecosystems are discussed. (C) 2004 Academie des sciences. Published by Elsevier SAS. All rights reserved.
引用
收藏
页码:1037 / 1057
页数:21
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