DOI: 10.1111/ele.12793
Scopus记录号: 2-s2.0-85020466974
论文题名: The relationship between species richness and ecosystem variability is shaped by the mechanism of coexistence
作者: Tredennick A.T. ; Adler P.B. ; Adler F.R.
刊名: Ecology Letters
ISSN: 1461023X
EISSN: 1461-0248
出版年: 2017
卷: 20, 期: 8 起始页码: 958
结束页码: 968
语种: 英语
英文关键词: Coexistence
; consumer-resource dynamics
; diversity-stability hypothesis
; pulsed differential equation
; relative nonlinearity
; storage effect
Scopus关键词: biodiversity
; ecosystem
; Biodiversity
; Ecosystem
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 Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/107594
Appears in Collections: 气候减缓与适应
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作者单位: Department of Wildland Resources and the Ecology Center, Utah State University, Logan, UT, United States; Departments of Biology and Mathematics, University of Utah, Salt Lake City, UT, United States
Recommended Citation:
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]. Ecology Letters,2017-01-01,20(8)