气候变化领域集成服务门户(CCPortal): Size and density mediate transitions between competition and facilitation

CCPortal

DOI	10.1111/ele.13381
	Size and density mediate transitions between competition and facilitation
	Cameron H.; Coulson T.; Marshall D.J.
发表日期	2019
ISSN	1461023X
卷号	22 期号:11
英文摘要	Species simultaneously compete with and facilitate one another. Size can mediate transitions along this competition–facilitation continuum, but the consequences for demography are unclear. We orthogonally manipulated the size of a focal species, and the size and density of a heterospecific neighbour, in the field using a model marine system. We then parameterised a size-structured population model with our experimental data. We found that heterospecific size and density interactively altered the population dynamics of the focal species. Size determined whether heterospecifics facilitated (when small) or competed with (when large) the focal species, while density strengthened these interactions. Such size-mediated interactions also altered the pace of the focal’s life history. We provide the first demonstration that size and density mediate competition and facilitation from a population dynamical perspective. We suspect such effects are ubiquitous, but currently underappreciated. We reiterate classic cautions against inferences about competitive hierarchies made in the absence of size-specific data. © 2019 John Wiley & Sons Ltd/CNRS
英文关键词	Competitive hierarchy; integral projection model; interspecific interactions; life history; population dynamics; response surface; trait variation
语种	英语
scopus关键词	biological model; population density; population dynamics; Models, Biological; 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/121014
作者单位	Centre for Geometric Biology, School of Biological Sciences Monash University, Melbourne, VIC, Australia; Department of Zoology University of Oxford, Oxford, OX1 3PS, United Kingdom
推荐引用方式 GB/T 7714	Cameron H.,Coulson T.,Marshall D.J.. Size and density mediate transitions between competition and facilitation[J],2019,22(11).
APA	Cameron H.,Coulson T.,&Marshall D.J..(2019).Size and density mediate transitions between competition and facilitation.Ecology Letters,22(11).
MLA	Cameron H.,et al."Size and density mediate transitions between competition and facilitation".Ecology Letters 22.11(2019).