Gard T C
J Math Biol. 1982;14(3):285-99. doi: 10.1007/BF00275394.
Persistence criteria are given for the highest trophic level predator in ordinary differential equation models of food chains exhibiting arbitrary omnivory and external supplementation of food source or an intermediate predator. The results are expressed in terms of inequalities involving the bounds on the intrinsic growth and interaction rates. Whether omnivory or external forcing enhances persistence is discussed, particularly for the examples of three-, four-, and five-link Lotka-Volterra food chains.
给出了具有任意杂食性、食物源外部补充或中间捕食者的食物链常微分方程模型中最高营养级捕食者的持续生存准则。结果以涉及内在增长和相互作用率界限的不等式表示。讨论了杂食性或外部强迫是否增强持续生存能力，特别是针对三链、四链和五链Lotka-Volterra食物链的例子。
