气候变化领域集成服务门户(CCPortal): The relationship between species richness and ecosystem variability is shaped by the mechanism of coexistence

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DOI	10.1111/ele.12793
	The relationship between species richness and ecosystem variability is shaped by the mechanism of coexistence
	Tredennick A.T.; Adler P.B.; Adler F.R.
发表日期	2017
ISSN	1461-023X
EISSN	1461-0248
卷号	20 期号:8
英文摘要	Theory relating species richness to ecosystem variability typically ignores the potential for environmental variability to promote species coexistence. Failure to account for fluctuation-dependent coexistence may explain deviations from the expected negative diversity–ecosystem variability relationship, and limits our ability to predict the consequences of increases in environmental variability. We use a consumer-resource model to explore how coexistence via the temporal storage effect and relative nonlinearity affects ecosystem variability. We show that a positive, rather than negative, diversity–ecosystem variability relationship is possible when ecosystem function is sampled across a natural gradient in environmental variability and diversity. We also show how fluctuation-dependent coexistence can buffer ecosystem functioning against increasing environmental variability by promoting species richness and portfolio effects. Our work provides a general explanation for variation in observed diversity–ecosystem variability relationships and highlights the importance of conserving regional species pools to help buffer ecosystems against predicted increases in environmental variability. © 2017 John Wiley & Sons Ltd/CNRS
英文关键词	Coexistence; consumer-resource dynamics; diversity-stability hypothesis; pulsed differential equation; relative nonlinearity; storage effect
学科领域	biodiversity; ecosystem; Biodiversity; Ecosystem
语种	英语
scopus关键词	biodiversity; ecosystem; Biodiversity; Ecosystem
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/118362
作者单位	Department of Wildland Resources and the Ecology Center, Utah State University, Logan, UT 84322, United States; Departments of Biology and Mathematics, University of Utah, Salt Lake City, UT 84112, United States
推荐引用方式 GB/T 7714	Tredennick A.T.,Adler P.B.,Adler F.R.. The relationship between species richness and ecosystem variability is shaped by the mechanism of coexistence[J],2017,20(8).
APA	Tredennick A.T.,Adler P.B.,&Adler F.R..(2017).The relationship between species richness and ecosystem variability is shaped by the mechanism of coexistence.Ecology Letters,20(8).
MLA	Tredennick A.T.,et al."The relationship between species richness and ecosystem variability is shaped by the mechanism of coexistence".Ecology Letters 20.8(2017).