globalchange  > 气候变化与战略
DOI: 10.1111/ele.13857
论文题名:
Species richness and food-web structure jointly drive community biomass and its temporal stability in fish communities
作者: Danet A.; Mouchet M.; Bonnaffé W.; Thébault E.; Fontaine C.
刊名: Ecology Letters
ISSN: 1461023X
出版年: 2021
语种: 英语
中文关键词: biomass ; ecosystem functioning ; fish ; foodweb ; natural settings ; network structure ; species richness ; stability ; synchrony ; temperature
英文摘要: Biodiversity–ecosystem functioning and food-web complexity–stability relationships are central to ecology. However, they remain largely untested in natural contexts. Here, we estimated the links among environmental conditions, richness, food-web structure, annual biomass and its temporal stability using a standardised monitoring dataset of 99 stream fish communities spanning from 1995 to 2018. We first revealed that both richness and average trophic level are positively related to annual biomass, with effects of similar strength. Second, we found that community stability is fostered by mean trophic level, while contrary to expectation, it is decreased by species richness. Finally, we found that environmental conditions affect both biomass and its stability mainly via effects on richness and network structure. Strikingly, the effect of species richness on community stability was mediated by population stability rather than synchrony, which contrasts with results from single trophic communities. We discuss the hypothesis that it could be a characteristic of multi-trophic communities. © 2021 John Wiley & Sons Ltd.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/166809
Appears in Collections:气候变化与战略

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作者单位: Centre d'Ecologie et des Sciences de la Conservation, UMR 7204 MNHN-CNRS-Sorbonne Université, Muséum national d'Histoire naturelle de Paris, Paris, France; Ecological and Evolutionary Dynamics Lab, Department of Zoology, University of Oxford, Oxford, United Kingdom; Sorbonne Université, CNRS, IRD, INRAE, Université Paris Est Créteil, Institute of Ecology and Environmental Sciences of Paris (iEES-Paris), Paris, France

Recommended Citation:
Danet A.,Mouchet M.,Bonnaffé W.,et al. Species richness and food-web structure jointly drive community biomass and its temporal stability in fish communities[J]. Ecology Letters,2021-01-01
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