气候变化领域集成服务门户(CCPortal): Biodiversity and ecosystem functioning in food webs: the vertical diversity hypothesis

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DOI	10.1111/ele.12865
	Biodiversity and ecosystem functioning in food webs: the vertical diversity hypothesis
	Wang S.; Brose U.
发表日期	2018
ISSN	1461023X
卷号	21 期号:1
英文摘要	One challenge in merging community and ecosystem ecology is to integrate the complexity of natural multitrophic communities into concepts of ecosystem functioning. Here, we combine food-web and allometry theories to demonstrate that primary production, as measured by the total nutrient uptake of the multitrophic community, is determined by vertical diversity (i.e. food web's maximum trophic level) and structure (i.e. distributions of species and their abundances and metabolic rates across trophic levels). In natural ecosystems, the community size distribution determines all these vertical patterns and thus the total nutrient uptake. Our model suggests a vertical diversity hypothesis (VDH) for ecosystem functioning in complex food webs. It predicts that, under a given nutrient supply, the total nutrient uptake increases exponentially with the maximum trophic level in the food web and it increases with its maximum body size according to a power law. The VDH highlights the effect of top–down regulation on plant nutrient uptake, which complements traditional paradigms that emphasised the bottom–up effect of nutrient supply on vertical diversity. We conclude that the VDH contributes to a synthetic framework for understanding the relationship between vertical diversity and ecosystem functioning in food webs and predicting the impacts of global changes on multitrophic ecosystems. © 2017 John Wiley & Sons Ltd/CNRS
英文关键词	allometry; complex food webs; ecological pyramids; nutrient supply; nutrient uptake; primary production; size distribution; trophic level; vertical diversity
语种	英语
scopus关键词	allometry; biodiversity; body size; community structure; complexity; ecological modeling; ecosystem function; food web; nutrient dynamics; nutrient uptake; plant; primary production; size distribution; species diversity; trophic level; biodiversity; ecosystem; food chain; Biodiversity; Ecosystem; Food Chain
来源期刊	Ecology Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/121378
作者单位	EcoNetLab, German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Leipzig, 04103, Germany; Institute of Biodiversity, Friedrich Schiller University Jena, Jena, 07743, Germany; Department of Ecology, College of Urban and Environmental Science, Key Laboratory for Earth Surface Processes of the Ministry of Education, Peking University, Beijing, 100871, China
推荐引用方式 GB/T 7714	Wang S.,Brose U.. Biodiversity and ecosystem functioning in food webs: the vertical diversity hypothesis[J],2018,21(1).
APA	Wang S.,&Brose U..(2018).Biodiversity and ecosystem functioning in food webs: the vertical diversity hypothesis.Ecology Letters,21(1).
MLA	Wang S.,et al."Biodiversity and ecosystem functioning in food webs: the vertical diversity hypothesis".Ecology Letters 21.1(2018).