气候变化领域集成服务门户(CCPortal): Accounting for interspecific competition and age structure in demographic analyses of density dependence improves predictions of fluctuations in population size

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DOI	10.1111/ele.13237
	Accounting for interspecific competition and age structure in demographic analyses of density dependence improves predictions of fluctuations in population size
	Gamelon M.; Vriend S.J.G.; Engen S.; Adriaensen F.; Dhondt A.A.; Evans S.R.; Matthysen E.; Sheldon B.C.; Sæther B.-E.
发表日期	2019
ISSN	1461023X
卷号	22 期号:5
英文摘要	Understanding species coexistence has long been a major goal of ecology. Coexistence theory for two competing species posits that intraspecific density dependence should be stronger than interspecific density dependence. Great tits and blue tits are two bird species that compete for food resources and nesting cavities. On the basis of long-term monitoring of these two competing species at sites across Europe, combining observational and manipulative approaches, we show that the strength of density regulation is similar for both species, and that individuals have contrasting abilities to compete depending on their age. For great tits, density regulation is driven mainly by intraspecific competition. In contrast, for blue tits, interspecific competition contributes as much as intraspecific competition, consistent with asymmetric competition between the two species. In addition, including age-specific effects of intra- and interspecific competition in density-dependence models improves predictions of fluctuations in population size by up to three times. © 2019 John Wiley & Sons Ltd/CNRS
英文关键词	Competitive interactions; Cyanistes caeruleus; density dependence; density regulation; Parus major; population growth rate
语种	英语
scopus关键词	Aves; Cyanistes caeruleus; Parus major; animal; diet; ecology; Europe; food chain; Passeriformes; population density; Animals; Diet; Ecology; Europe; Food Chain; Passeriformes; Population Density
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/121102
作者单位	Centre for Biodiversity Dynamics, Department of Biology, Norwegian University of Science and Technology, Trondheim, 7491, Norway; Centre for Biodiversity Dynamics, Department of Mathematical Sciences, Norwegian University of Science and Technology, Trondheim, 7491, Norway; Evolutionary Ecology Group, University of Antwerp, Wilrijk, 2610, Belgium; Laboratory of Ornithology, Cornell University, Ithaca, NY 14850, United States; Edward Grey Institute, Department of Zoology, University of Oxford, Oxford, OX1 3PS, United Kingdom
推荐引用方式 GB/T 7714	Gamelon M.,Vriend S.J.G.,Engen S.,et al. Accounting for interspecific competition and age structure in demographic analyses of density dependence improves predictions of fluctuations in population size[J],2019,22(5).
APA	Gamelon M..,Vriend S.J.G..,Engen S..,Adriaensen F..,Dhondt A.A..,...&Sæther B.-E..(2019).Accounting for interspecific competition and age structure in demographic analyses of density dependence improves predictions of fluctuations in population size.Ecology Letters,22(5).
MLA	Gamelon M.,et al."Accounting for interspecific competition and age structure in demographic analyses of density dependence improves predictions of fluctuations in population size".Ecology Letters 22.5(2019).