Awender Stefan, Wackerbauer Renate, Breed Greg A
Department of Physics, University of Alaska Fairbanks, Fairbanks, Alaska 99775, USA.
Department of Biology and Wildlife, University of Alaska Fairbanks, Fairbanks, Alaska 99775, USA.
Chaos. 2021 Feb;31(2):023106. doi: 10.1063/5.0029934.
The stability of ecological networks of varying topologies and predator-prey relationships is explored by applying the concept of generalized modeling. The effects of omnivory, complexity, enrichment, number of top predators, and predatory response are discussed. The degree of omnivory plays a large role in governing web stability at steady state. Complexity as measured from connectance and network size is not a perfect indicator of stability; large, highly connected webs can be just as stable as smaller, less connected ones. Learning behavior as expressed in Holling's type III predatory response is stabilizing for food webs and provides exceptions to the paradox of enrichment for some topologies.
通过应用广义建模的概念，探索了具有不同拓扑结构和捕食者 - 猎物关系的生态网络的稳定性。讨论了杂食性、复杂性、富集、顶级捕食者数量和捕食反应的影响。杂食程度在稳态下控制网络稳定性方面起着很大作用。从连通性和网络规模衡量的复杂性并非稳定性的完美指标；大型、高度连通的网络可能与较小、连通性较低的网络一样稳定。以霍林III型捕食反应表示的学习行为对食物网具有稳定作用，并为某些拓扑结构的富集悖论提供了例外情况。
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