PREDATION IN MULTI-PREY COMMUNITIES
PREDATION IN MULTI-PREY COMMUNITIES
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DOI：
10.1016/0022-5193(76)90053-9
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发表时间：
1976-01-01
影响因子：
2
通讯作者：
HASSELL, MP
中科院分区：
文献类型：
--
作者：
COMINS, HN;HASSELL, MP
考虑了顶级捕食者对竞争猎物物种系统稳定性的影响。这是针对 2 个猎物物种进行的详细研究，其中捕食者要么以完全随机的方式行为，互相干扰，要么随时切换到更丰富的猎物。该分析扩展到 n 个相似猎物物种的情况，在利用一维资源谱时，它们要么平等竞争，要么与它们的 2 个最近邻居竞争。当猎物物种完全重叠时，甚至当竞争系数大于 1 时，捕食者切换可以产生局部稳定性。这对于最近邻竞争来说更难以实现。在任何一种情况下，转换对捕食者都是有利的，因为它允许它们在各种条件下成功地与猎物共存。
The effect of a top predator on the stability of a system of competing prey species is considered. This is done in detail for 2 prey species where the predators either behave in a completely random way, interfere with each other or switch to the more abundant prey at any time. The analysis is extended to the case of n similar prey species, either competing equally or competing with their 2 nearest neighbors in exploiting a 1-dimensional resource spectrum. Predator switching can produce local stability when the prey species overlap completely and even when the competition coefficients are greater than 1. This is more difficult to attain for nearest neighbor competition. In either case switching is advantageous to the predators, since it allows them to coexist successfully with their prey over a wide range of conditions.