气候变化领域集成服务门户(CCPortal): Constraints on trait combinations explain climatic drivers of biodiversity: the importance of trait covariance in community assembly

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DOI	10.1111/ele.12781
	Constraints on trait combinations explain climatic drivers of biodiversity: the importance of trait covariance in community assembly
	Dwyer J.M.; Laughlin D.C.
发表日期	2017
ISSN	1461-023X
EISSN	1461-0248
卷号	20 期号:7
英文摘要	Trade-offs maintain diversity and structure communities along environmental gradients. Theory indicates that if covariance among functional traits sets a limit on the number of viable trait combinations in a given environment, then communities with strong multidimensional trait constraints should exhibit low species diversity. We tested this prediction in winter annual plant assemblages along an aridity gradient using multilevel structural equation modelling. Univariate and multivariate functional diversity measures were poorly explained by aridity, and were surprisingly poor predictors of community richness. By contrast, the covariance between maximum height and seed mass strengthened along the aridity gradient, and was strongly associated with richness declines. Community richness had a positive effect on local neighbourhood richness, indicating that climate effects on trait covariance indirectly influence diversity at local scales. We present clear empirical evidence that declines in species richness along gradients of environmental stress can be due to increasing constraints on multidimensional phenotypes. © 2017 John Wiley & Sons Ltd/CNRS
英文关键词	Aridity; functional traits; habitat filtering; species richness; winter annual; York gum woodlands
学科领域	biodiversity; plant; plant seed; Biodiversity; Plants; Seeds
语种	英语
scopus关键词	biodiversity; plant; plant seed; Biodiversity; Plants; Seeds
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/118376
作者单位	School of Biological Sciences, The University of Queensland, St Lucia, Brisbane, QLD 4072, Australia; Ecosciences Precinct, CSIRO Land and Water, Dutton Park, Brisbane, QLD 4102, Australia; Environmental Research Institute and School of Science, University of Waikato, Hamilton, 3240, New Zealand; Department of Botany, University of Wyoming, 1000 East University Dr., Laramie, WY 82071, United States
推荐引用方式 GB/T 7714	Dwyer J.M.,Laughlin D.C.. Constraints on trait combinations explain climatic drivers of biodiversity: the importance of trait covariance in community assembly[J],2017,20(7).
APA	Dwyer J.M.,&Laughlin D.C..(2017).Constraints on trait combinations explain climatic drivers of biodiversity: the importance of trait covariance in community assembly.Ecology Letters,20(7).
MLA	Dwyer J.M.,et al."Constraints on trait combinations explain climatic drivers of biodiversity: the importance of trait covariance in community assembly".Ecology Letters 20.7(2017).