气候变化领域集成服务门户(CCPortal): Phytoplankton biodiversity is more important for ecosystem functioning in highly variable thermal environments

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DOI	10.1073/pnas.2019591118
	Phytoplankton biodiversity is more important for ecosystem functioning in highly variable thermal environments
	Bestion E.; Haegeman B.; Codesal S.A.; Garreau A.; Huet M.; Barton S.; Montoya J.M.
发表日期	2021
ISSN	0027-8424
卷号	118 期号:35
英文摘要	The 21st century has seen an acceleration of anthropogenic climate change and biodiversity loss, with both stressors deemed to affect ecosystem functioning. However, we know little about the interactive effects of both stressors and in particular about the interaction of increased climatic variability and biodiversity loss on ecosystem functioning. This should be remedied because larger climatic variability is one of the main features of climate change. Here,we demonstrated that temperature fluctuations led to changes in the importance of biodiversity for ecosystem functioning. We used microcosm communities of different phytoplankton species richness and exposed them to a constant, mild, and severe temperature-fluctuating environment. Wider temperature fluctuations led to steeper biodiversity-ecosystem functioning slopes, meaning that species loss had a stronger negative effect on ecosystem functioning in more fluctuating environments. For severe temperature fluctuations, the slope increased through time due to a decrease of the productivity of species-poor communities over time. We developed a theoretical competition model to better understand our experimental results and showed that larger differences in thermal tolerances across species led to steeper biodiversity- ecosystem functioning slopes. Species-rich communities maintained their ecosystem functioning with increased fluctuation as they contained species able to resist the thermally fluctuating environments, while this was on average not the case in species-poor communities. Our results highlight the importance of biodiversity for maintaining ecosystem functions and services in the context of increased climatic variability under climate change. © 2021 National Academy of Sciences. All rights reserved.
英文关键词	Biodiversity-ecosystem functioning; Climate change; Marine phytoplankton; Temperature fluctuation; Temperature variability
语种	英语
scopus关键词	article; biodiversity; climate change; competition; heat tolerance; microcosm; nonhuman; phytoplankton; species richness; theoretical study
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/238412
作者单位	Station d'Ecologie Théorique et Expérimentale, CNRS, Moulis, 09200, France; Environment and Sustainability Institute, University of Exeter, Penryn, TR10 9FE, United Kingdom; Department of Earth Sciences, University of Oxford, Oxford, OX1 3AN, United Kingdom
推荐引用方式 GB/T 7714	Bestion E.,Haegeman B.,Codesal S.A.,et al. Phytoplankton biodiversity is more important for ecosystem functioning in highly variable thermal environments[J],2021,118(35).
APA	Bestion E..,Haegeman B..,Codesal S.A..,Garreau A..,Huet M..,...&Montoya J.M..(2021).Phytoplankton biodiversity is more important for ecosystem functioning in highly variable thermal environments.Proceedings of the National Academy of Sciences of the United States of America,118(35).
MLA	Bestion E.,et al."Phytoplankton biodiversity is more important for ecosystem functioning in highly variable thermal environments".Proceedings of the National Academy of Sciences of the United States of America 118.35(2021).