气候变化领域集成服务门户(CCPortal): Spatio-temporal dynamics of density-dependent dispersal during a population colonisation

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DOI	10.1111/ele.13205
	Spatio-temporal dynamics of density-dependent dispersal during a population colonisation
	De Bona S.; Bruneaux M.; Lee A.E.G.; Reznick D.N.; Bentzen P.; López-Sepulcre A.
发表日期	2019
ISSN	1461023X
卷号	22 期号:4
英文摘要	Predicting population colonisations requires understanding how spatio-temporal changes in density affect dispersal. Density can inform on fitness prospects, acting as a cue for either habitat quality, or competition over resources. However, when escaping competition, high local density should only increase emigration if lower-density patches are available elsewhere. Few empirical studies on dispersal have considered the effects of density at the local and landscape scale simultaneously. To explore this, we analyze 5 years of individual-based data from an experimental introduction of wild guppies Poecilia reticulata. Natal dispersal showed a decrease in local density dependence as density at the landscape level increased. Landscape density did not affect dispersal among adults, but local density-dependent dispersal switched from negative (conspecific attraction) to positive (conspecific avoidance), as the colonisation progressed. This study demonstrates that densities at various scales interact to determine dispersal, and suggests that dispersal trade-offs differ across life stages. © 2019 John Wiley & Sons Ltd/CNRS
英文关键词	Breeding dispersal; emigration; individual-based data; kinship; landscape scale; movement; Poecilia reticulata; rapid evolution; slope of density dependence; translocation
语种	英语
scopus关键词	Poecilia reticulata; animal; ecosystem; population density; population dynamics; population migration; Animal Migration; Animals; Ecosystem; Population Density; Population Dynamics
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/121116
作者单位	University of Jyväskylä, Centre of Excellence in Biological Interactions, Department of Biological and Environmental Science, Jyväskylä, Finland; Department of Biology, University of California, Riverside, CA, United States; Department of Biology, Dalhousie University, Halifax, Canada; CNRS, UMR 7618, Institute of Ecology and Environmental Sciences Paris (iEES), Sorbonne University, Paris, France
推荐引用方式 GB/T 7714	De Bona S.,Bruneaux M.,Lee A.E.G.,et al. Spatio-temporal dynamics of density-dependent dispersal during a population colonisation[J],2019,22(4).
APA	De Bona S.,Bruneaux M.,Lee A.E.G.,Reznick D.N.,Bentzen P.,&López-Sepulcre A..(2019).Spatio-temporal dynamics of density-dependent dispersal during a population colonisation.Ecology Letters,22(4).
MLA	De Bona S.,et al."Spatio-temporal dynamics of density-dependent dispersal during a population colonisation".Ecology Letters 22.4(2019).