Competition and coexistence in regional habitats

	Competition and coexistence in regional habitats
	Wang, ZL ; Wang, FZ ; Chen, S ; Zhu, MY
刊名	AMERICAN NATURALIST
	2002-05
卷号	159 期号:5 页码:498-508
关键词	competition exclusion invasion coexistence habitat heterogeneity local dynamics
ISSN号	0003-0147
英文摘要	Habitat heterogeneity plays a key role in the dynamics and structures of communities. In this article, a two-species metapopulation model that includes local competitive dynamics is analyzed to study the population dynamics of two competing species in spatially structured habitats. When local stochastic extinction can be ignored, there are, as in Lotka-Volterra equations, four outcomes of interspecific competition in this model. The outcomes of competition depend on the competitive intensity between the competing pairs. An inferior competitor and a superior competitor, or two strongly competing species, can never stably coexist, whereas two weak competitors (even if they are very similar species) may coexist over the long term in such environments. Local stochastic extinction may greatly affect the outcomes of interspecific competition. Two competing species can or cannot stably coexist depending not only on the competitive intensity between the competing pairs but also on their precompetitive distributions. Two weak competitors that have similar precompetitive distributions can always regionally coexist. Two strongly competing species that competitively exclude each other in more stable habitats may be able to stably coexist in highly heterogenous environments if they have similar precompetitive distributions. There is also a chance for an inferior competitor to coexist regionally or even to exclude a superior competitor when the superior competitor has a narrow precompetitive distribution and the inferior competitor has a wide precompetitive distribution.
WOS关键词	COMMUNITIES ; ABUNDANCE ; DIVERSITY ; DYNAMICS ; PLANTS ; HYPOTHESIS ; PATTERNS ; NICHES
WOS研究方向	Environmental Sciences & Ecology ; Evolutionary Biology
语种	英语
出版者	UNIV CHICAGO PRESS
WOS记录号	WOS:000175302800006
内容类型	期刊论文
源URL	[http://ir.fio.com.cn:8080/handle/2SI8HI0U/26638]
专题	自然资源部第一海洋研究所
通讯作者	Wang, ZL
作者单位	1.State Ocean Adm, Inst Oceanog 1, Shandong 266061, Peoples R China 2.Lanzhou Univ, Dept Math, Lanzhou 730000, Peoples R China 3.State Ocean Adm, Key Lab Sci & Engn Marine Ecol Environm, Shandong 266061, Peoples R China
推荐引用方式 GB/T 7714	Wang, ZL,Wang, FZ,Chen, S,et al. Competition and coexistence in regional habitats[J]. AMERICAN NATURALIST,2002,159(5):498-508.
APA	Wang, ZL,Wang, FZ,Chen, S,&Zhu, MY.(2002).Competition and coexistence in regional habitats.AMERICAN NATURALIST,159(5),498-508.
MLA	Wang, ZL,et al."Competition and coexistence in regional habitats".AMERICAN NATURALIST 159.5(2002):498-508.