气候变化领域集成服务门户(CCPortal): Identifying mechanisms that structure ecological communities by snapping model parameters to empirically observed tradeoffs

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DOI	10.1111/ele.12910
	Identifying mechanisms that structure ecological communities by snapping model parameters to empirically observed tradeoffs
	Thomas Clark A.; Lehman C.; Tilman D.
发表日期	2018
ISSN	1461023X
卷号	21 期号:4
英文摘要	Theory predicts that interspecific tradeoffs are primary determinants of coexistence and community composition. Using information from empirically observed tradeoffs to augment the parametrisation of mechanism-based models should therefore improve model predictions, provided that tradeoffs and mechanisms are chosen correctly. We developed and tested such a model for 35 grassland plant species using monoculture measurements of three species characteristics related to nitrogen uptake and retention, which previous experiments indicate as important at our site. Matching classical theoretical expectations, these characteristics defined a distinct tradeoff surface, and models parameterised with these characteristics closely matched observations from experimental multi-species mixtures. Importantly, predictions improved significantly when we incorporated information from tradeoffs by ‘snapping’ characteristics to the nearest location on the tradeoff surface, suggesting that the tradeoffs and mechanisms we identify are important determinants of local community structure. This ‘snapping’ method could therefore constitute a broadly applicable test for identifying influential tradeoffs and mechanisms. © 2018 The Authors. Ecology Letters published by CNRS and John Wiley & Sons Ltd
英文关键词	Cedar Creek; coexistence mechanism; ecological community; grassland ecology; LTER; mechanistic model; predictive model; resource competition; tradeoff
语种	英语
scopus关键词	biological model; biota; ecosystem; plant; species difference; Biota; Ecosystem; Models, Biological; Plants; Species Specificity
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/121336
作者单位	Department of Ecology, Evolution, and Behavior, University of Minnesota, Twin Cities, St. Paul, MN 55108, United States; Leipzig University, Ritterstrasse 26, Leipzig, 04109, Germany; Department of Physiological Diversity, Helmholtz Center for Environmental Research (UFZ), Permoserstrasse 15, Leipzig, 04318, Germany; Bren School of Environmental Science and Management, University of California, Santa Barbara, 2400 Bren Hall, Santa Barbara, CA 93106, United States; German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Synthesis Centre for Biodiversity Sciences (sDiv), Deutscher Platz 5e, Leipzig, 04103, Germany
推荐引用方式 GB/T 7714	Thomas Clark A.,Lehman C.,Tilman D.. Identifying mechanisms that structure ecological communities by snapping model parameters to empirically observed tradeoffs[J],2018,21(4).
APA	Thomas Clark A.,Lehman C.,&Tilman D..(2018).Identifying mechanisms that structure ecological communities by snapping model parameters to empirically observed tradeoffs.Ecology Letters,21(4).
MLA	Thomas Clark A.,et al."Identifying mechanisms that structure ecological communities by snapping model parameters to empirically observed tradeoffs".Ecology Letters 21.4(2018).