气候变化领域集成服务门户(CCPortal): Positive frequency dependence undermines the success of restoration using historical disturbance regimes

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DOI	10.1111/ele.12473
	Positive frequency dependence undermines the success of restoration using historical disturbance regimes
	Crandall R.; Knight T.M.
发表日期	2015
ISSN	1461-023X
EISSN	1461-0248
卷号	18 期号:9
英文摘要	Anthropogenic alterations of historical disturbance regimes (e.g. suppressing floods and wildfires) is a primary mechanism by which exotic species can come to dominate native communities. Unfortunately, reinstating historical disturbance regimes to restore native communities has achieved mixed success. The presence of positive frequency dependence (PFD) is commonly invoked to explain why exotic plant invasions are so difficult to eradicate. However, models examining PFD have not considered the effect of reintroducing disturbances. Using a spatially explicit individual-based model, we consider how magnitude and direction of frequency dependence of native and exotic species affects the success of reintroducing disturbances that favour fitness of natives over exotics. Our model illustrates why restoration is difficult; there is a narrow range of parameters that allows for native species to eliminate or coexist with exotics once they have established. Dominance by exotic invaders occurs with moderate initial frequencies of exotic individuals, aggregation of these individuals, or an exotic propagule production advantage. Reintroducing disturbances allows native dominance only when PFD of the exotic is weaker than that of the native species, disturbance intervals are short, and/or exotics are not initially frequent. Our framework provides guidelines for conditions in which the reintroduction of disturbances will effectively restore invaded habitats. © 2015 John Wiley & Sons Ltd/CNRS.
英文关键词	Aggregation; Coexistence; Disturbance; Exotic species; Negative frequency dependence; Positive frequency dependence; Propagule pressure; Restoration; Spatial model
学科领域	aggregation behavior; biological invasion; coexistence; community structure; dominance; ecological modeling; environmental disturbance; flood damage; frequency analysis; human activity; invasive species; native species; plant community; propagule; restoration ecology; wildfire; biological model; ecosystem; ecosystem restoration; fire; flooding; introduced species; procedures; Ecosystem; Environmental Restoration and Remediation; Fires; Floods; Introduced Species; Models, Biological
语种	英语
scopus关键词	aggregation behavior; biological invasion; coexistence; community structure; dominance; ecological modeling; environmental disturbance; flood damage; frequency analysis; human activity; invasive species; native species; plant community; propagule; restoration ecology; wildfire; biological model; ecosystem; ecosystem restoration; fire; flooding; introduced species; procedures; Ecosystem; Environmental Restoration and Remediation; Fires; Floods; Introduced Species; Models, Biological
来源期刊	Ecology Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/118689
作者单位	Department of Biology, Washington University in St. Louis, St. Louis, MO, United States; German Centre for Integrative Biodiversity Research (iDiv), Halle-Jena-Lepzig, Germany
推荐引用方式 GB/T 7714	Crandall R.,Knight T.M.. Positive frequency dependence undermines the success of restoration using historical disturbance regimes[J],2015,18(9).
APA	Crandall R.,&Knight T.M..(2015).Positive frequency dependence undermines the success of restoration using historical disturbance regimes.Ecology Letters,18(9).
MLA	Crandall R.,et al."Positive frequency dependence undermines the success of restoration using historical disturbance regimes".Ecology Letters 18.9(2015).