Levins R, Culver D
Department of Biology, University of Chicago, Chicago, Illinois 60637.
Proc Natl Acad Sci U S A. 1971 Jun;68(6):1246-8. doi: 10.1073/pnas.68.6.1246.
A model is developed for the coexistence and exclusion of species over a region of similar habitable patches. Since the balance of local extinction and colonization would leave some patches unoccupied even without competitors, species may coexist even when all the patches are the same. Regional competition coefficients are found when species affect the local extinction or migration rates of each other. Rare species can regulate each other and even exclude other species completely.
建立了一个模型,用于研究在一片具有相似宜居斑块的区域内物种的共存和排斥情况。由于即使没有竞争者,局部灭绝和定殖的平衡也会使一些斑块无人占据,所以即使所有斑块都相同,物种也可能共存。当物种相互影响彼此的局部灭绝或迁移率时,就会得出区域竞争系数。稀有物种可以相互调节,甚至完全排斥其他物种。