气候变化领域集成服务门户(CCPortal): Phylogenetic structural equation modelling reveals no need for an 'origin' of the leaf economics spectrum

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DOI	10.1111/ele.12542
	Phylogenetic structural equation modelling reveals no need for an 'origin' of the leaf economics spectrum
	Mason C.M.; Goolsby E.W.; Humphreys D.P.; Donovan L.A.
发表日期	2016
ISSN	1461-023X
EISSN	1461-0248
卷号	19 期号:1
英文摘要	The leaf economics spectrum (LES) is a prominent ecophysiological paradigm that describes global variation in leaf physiology across plant ecological strategies using a handful of key traits. Nearly a decade ago, Shipley et al. (2006) used structural equation modelling to explore the causal functional relationships among LES traits that give rise to their strong global covariation. They concluded that an unmeasured trait drives LES covariation, sparking efforts to identify the latent physiological trait underlying the 'origin' of the LES. Here, we use newly developed phylogenetic structural equation modelling approaches to reassess these conclusions using both global LES data as well as data collected across scales in the genus Helianthus. For global LES data, accounting for phylogenetic non-independence indicates that no additional unmeasured traits are required to explain LES covariation. Across datasets in Helianthus, trait relationships are highly variable, indicating that global-scale models may poorly describe LES covariation at non-global scales. Copyright © 2016 John Wiley & Sons Ltd/CNRS.
英文关键词	Leaf lifespan; Leaf mass per area; Nitrogen; Photosynthesis; Phylogenetic path analysis
学科领域	Helianthus; biological model; classification; photosynthesis; phylogeny; physiology; plant leaf; sunflower; Helianthus; Models, Biological; Photosynthesis; Phylogeny; Plant Leaves
语种	英语
scopus关键词	Helianthus; biological model; classification; photosynthesis; phylogeny; physiology; plant leaf; sunflower; Helianthus; Models, Biological; Photosynthesis; Phylogeny; Plant Leaves
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/118607
作者单位	Department of Plant Biology, University of Georgia, Athens, GA, United States; Interdisciplinary Toxicology Program, University of Georgia, Athens, GA, United States; Department of Integrative Biology, University of Texas, Austin, TX, United States
推荐引用方式 GB/T 7714	Mason C.M.,Goolsby E.W.,Humphreys D.P.,et al. Phylogenetic structural equation modelling reveals no need for an 'origin' of the leaf economics spectrum[J],2016,19(1).
APA	Mason C.M.,Goolsby E.W.,Humphreys D.P.,&Donovan L.A..(2016).Phylogenetic structural equation modelling reveals no need for an 'origin' of the leaf economics spectrum.Ecology Letters,19(1).
MLA	Mason C.M.,et al."Phylogenetic structural equation modelling reveals no need for an 'origin' of the leaf economics spectrum".Ecology Letters 19.1(2016).