Consistently positive effect of species diversity on ecosystem, but not population, temporal stability.
asynchrony
biodiversity
ecosystem functions
meta-analysis
stability
Journal
Ecology letters
ISSN: 1461-0248
Titre abrégé: Ecol Lett
Pays: England
ID NLM: 101121949
Informations de publication
Date de publication:
Oct 2021
Oct 2021
Historique:
revised:
31
03
2021
received:
16
09
2020
accepted:
20
04
2021
pubmed:
19
5
2021
medline:
11
9
2021
entrez:
18
5
2021
Statut:
ppublish
Résumé
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.
Types de publication
Journal Article
Meta-Analysis
Review
Langues
eng
Sous-ensembles de citation
IM
Pagination
2256-2266Subventions
Organisme : National Science Foundation
ID : DEB-1856318
Organisme : National Science Foundation
ID : CBET-1833988
Organisme : Horizon 2020 Framework Programme
ID : 666971
Organisme : National Natural Science Foundation of China
ID : 31988102
Informations de copyright
© 2021 John Wiley & Sons Ltd.
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