globalchange  > 气候变化事实与影响
Scopus ID: 2-s2.0-85059839886
Nitrogen addition does not reduce the role of spatial asynchrony in stabilising grassland communities
Author: Zhang Y.; Feng J.; Loreau M.; He N.; Han X.; Jiang L.
Source Publication: Ecology Letters
ISSN: 1461023X
Publishing Year: 2019
Volume: 22, Issue:4
pages begin: 563
pages end: 571
Language: 英语
Keyword: Aboveground biomass ; asynchrony ; biodiversity ; metacommunity ; nitrogen deposition ; spatial heterogeneity ; spatial insurance ; spatial scale ; species richness ; steppe
English Abstract: While nitrogen (N) amendment is known to affect the stability of ecological communities, whether this effect is scale-dependent remains an open question. By conducting a field experiment in a temperate grassland, we found that both plant richness and temporal stability of community biomass increased with spatial scale, but N enrichment reduced richness and stability at the two scales considered. Reduced local-scale stability under N enrichment arose from N-induced reduction in population stability, which was partly attributable to the decline in local species richness, as well as reduction in asynchronous local population dynamics across species. Importantly, N enrichment did not alter spatial asynchrony among local communities, which provided similar spatial insurance effects at the larger scale, regardless of N enrichment levels. These results suggest that spatial variability among local communities, in addition to local diversity, may help stabilise ecosystems at larger spatial scales even in the face of anthropogenic environmental changes. © 2019 John Wiley & Sons Ltd/CNRS
Document Type: 期刊论文
Appears in Collections:气候变化事实与影响

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Affiliation: School of Biological Sciences, Georgia Institute of Technology, Atlanta, GA 30332, United States; State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China; Institute of Desertification Studies, Chinese Academy of Forestry, Beijing, 100091, China; Centre for Biodiversity Theory and Modelling, Theoretical and Experimental Ecology Station, CNRS and Paul Sabatier University, Moulis, 09200, France; Synthesis Research Center of Chinese Ecosystem Research Network, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, China

Recommended Citation:
Zhang Y.,Feng J.,Loreau M.,et al. Nitrogen addition does not reduce the role of spatial asynchrony in stabilising grassland communities[J]. Ecology Letters,2019-01-01,22(4)
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