DOI: 10.1111/ele.13777
论文题名: Consistently positive effect of species diversity on ecosystem, but not population, temporal stability
作者: Xu Q. ; Yang X. ; Yan Y. ; Wang S. ; Loreau M. ; Jiang L.
刊名: Ecology Letters
ISSN: 1461023X
出版年: 2021
语种: 英语
中文关键词: asynchrony
; biodiversity
; ecosystem functions
; meta-analysis
; stability
英文摘要: Despite much recent progress, our understanding of diversity–stability relationships across different study systems remains incomplete. In particular, recent theory clarified that within-species population stability and among-species asynchronous population dynamics combine to determine ecosystem temporal stability, but their relative importance in modulating diversity-ecosystem temporal stability relationships in different ecosystems remains unclear. We addressed this issue with a meta-analysis of empirical studies of ecosystem and population temporal stability in relation to species diversity across a range of taxa and ecosystems. We show that ecosystem temporal stability tended to increase with species diversity, regardless of study systems. Increasing diversity promoted asynchrony, which, in turn, contributed to increased ecosystem stability. The positive diversity–ecosystem stability relationship persisted even after accounting for the influences of environmental covariates (e.g., precipitation and nutrient input). By contrast, species diversity tended to reduce population temporal stability in terrestrial systems but increase population temporal stability in aquatic systems, suggesting that asynchronous dynamics among species are essential for stabilizing diverse terrestrial ecosystems. We conclude that there is compelling empirical evidence for a general positive relationship between species diversity and ecosystem-level temporal stability, but the contrasting diversity–population temporal stability relationships between terrestrial and aquatic systems call for more investigations into their underlying mechanisms. © 2021 John Wiley & Sons Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/166957
Appears in Collections: 气候变化与战略
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作者单位: School of Biological Sciences, Georgia Institute of Technology, Atlanta, GA, United States; State Key Laboratory of Biocontrol, School of Ecology, Sun Yat-sen University, Guangzhou, China; Institute of Ecology, College of Urban and Environmental Science, and Key Laboratory for Earth Surface Processes of the Ministry of Education, Peking University, Beijing, China; Centre for Biodiversity Theory and Modelling, Theoretical and Experimental Ecology Station, CNRSMoulis, France
Recommended Citation:
Xu Q.,Yang X.,Yan Y.,et al. Consistently positive effect of species diversity on ecosystem, but not population, temporal stability[J]. Ecology Letters,2021-01-01