globalchange  > 气候减缓与适应
DOI: 10.1111/ele.12910
Scopus记录号: 2-s2.0-85042555056
论文题名:
Identifying mechanisms that structure ecological communities by snapping model parameters to empirically observed tradeoffs
作者: Thomas Clark A.; Lehman C.; Tilman D.
刊名: Ecology Letters
ISSN: 1461023X
EISSN: 1461-0248
出版年: 2018
卷: 21, 期:4
起始页码: 494
结束页码: 505
语种: 英语
英文关键词: Cedar Creek ; coexistence mechanism ; ecological community ; grassland ecology ; LTER ; mechanistic model ; predictive model ; resource competition ; tradeoff
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
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/107467
Appears in Collections:气候减缓与适应

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作者单位: Department of Ecology, Evolution, and Behavior, University of Minnesota, Twin Cities, St. Paul, MN, United States; Leipzig University, Ritterstrasse 26, Leipzig, Germany; Department of Physiological Diversity, Helmholtz Center for Environmental Research (UFZ), Permoserstrasse 15, Leipzig, Germany; Bren School of Environmental Science and Management, University of California, Santa Barbara, 2400 Bren Hall, Santa Barbara, CA, United States; German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Synthesis Centre for Biodiversity Sciences (sDiv), Deutscher Platz 5e, Leipzig, Germany

Recommended Citation:
Thomas Clark A.,Lehman C.,Tilman D.. Identifying mechanisms that structure ecological communities by snapping model parameters to empirically observed tradeoffs[J]. Ecology Letters,2018-01-01,21(4)
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