气候变化领域集成服务门户(CCPortal): How pulse disturbances shape size-abundance pyramids

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DOI	10.1111/ele.13508
	How pulse disturbances shape size-abundance pyramids
	Jacquet C.; Gounand I.; Altermatt F.
发表日期	2020
ISSN	1461023X
起始页码	1014
结束页码	1023
卷号	23 期号:6
英文摘要	Ecological pyramids represent the distribution of abundance and biomass of living organisms across body-sizes. Our understanding of their expected shape relies on the assumption of invariant steady-state conditions. However, most of the world’s ecosystems experience disturbances that keep them far from such a steady state. Here, using the allometric scaling between population growth rate and body-size, we predict the response of size-abundance pyramids within a trophic guild to any combination of disturbance frequency and intensity affecting all species in a similar way. We show that disturbances narrow the base of size-abundance pyramids, lower their height and decrease total community biomass in a nonlinear way. An experimental test using microbial communities demonstrates that the model captures well the effect of disturbances on empirical pyramids. Overall, we demonstrate both theoretically and experimentally how disturbances that are not size-selective can nonetheless have disproportionate impacts on large species. © 2020 John Wiley & Sons Ltd/CNRS
关键词	Body-size community size structure disturbance frequency disturbance intensity extreme events metabolic theory perturbations protist communities size spectrum
英文关键词	Protista; biomass; body size; ecosystem; food chain; Biomass; Body Size; Ecosystem; Food Chain
语种	英语
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/204239
作者单位	Department of Evolutionary Biology and Environmental Studies, University of Zurich, Zürich, Switzerland; Department of Aquatic Ecology, Swiss Federal Institute of Aquatic Science and Technology, Eawag, Dübendorf, Switzerland; Sorbonne Université, CNRS, UPEC, CNRS, IRD, INRA, Institut d’écologie et des sciences de l’environnement, IEES, Paris, France
推荐引用方式 GB/T 7714	Jacquet C.,Gounand I.,Altermatt F.. How pulse disturbances shape size-abundance pyramids[J],2020,23(6).
APA	Jacquet C.,Gounand I.,&Altermatt F..(2020).How pulse disturbances shape size-abundance pyramids.Ecology Letters,23(6).
MLA	Jacquet C.,et al."How pulse disturbances shape size-abundance pyramids".Ecology Letters 23.6(2020).