The function-dominance correlation drives the direction and strength of biodiversity–ecosystem functioning relationships,Ecology Letters

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The function-dominance correlation drives the direction and strength of biodiversity–ecosystem functioning relationships
Ecology Letters ( IF 7.6 ) Pub Date : 2021-06-22 , DOI: 10.1111/ele.13776
Michael S Crawford _{1,

2,

3} , Kathryn E Barry _{1,

4,

5} , Adam T Clark _{1,

6,

7} , Caroline E Farrior ₈ , Jes Hines _{1,

9} , Emma Ladouceur _{1,

6,

10} , Jeremy W Lichstein ₁₁ , Isabelle Maréchaux _{12,

13} , Felix May ₁₄ , Akira S Mori ₁₅ , Björn Reineking ₁₆ , Lindsay A Turnbull ₁₇ , Christian Wirth _{1,

4,

16,

18} , Nadja Rüger _{1,

2,

19}

Affiliation

German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Leipzig, Germany.
Department of Economics, Institute of Empirical Economic Research, University of Leipzig, Leipzig, Germany.
Department of Land-Use Management, Potsdam Institute for Climate Impact Research (PIK), Potsdam, Germany.
Institute of Biology, University of Leipzig, Leipzig, Germany.
Ecology and Biodiversity Group, Department of Biology, Utrecht University, Utrecht, Netherlands.
Department of Physiological Diversity, Helmholtz Centre for Environmental Research (UFZ), Leipzig, Germany.
Institute of Biology, University of Graz, Graz, Austria.
Department of Integrative Biology, University of Texas at Austin, Austin, Texas, USA.
University of Leipzig, Leipzig, Germany.
Biodiversity Synthesis, Institute of Computer Science, Martin Luther University Halle-Wittenberg, Halle, Germany.
Department of Biology, University of Florida, Gainesville, Florida, USA.
AMAP, University of Montpellier, CIRAD, CNRS, INRAE, Montpellier, IRD, France.
Laboratoire Évolution et Diversité Biologique, UMR 5174 (CNRS/IRD/UPS), Toulouse Cedex, France.
Institute of Biology, Freie Universität Berlin, Gartenhaus, Berlin, Germany.
Graduate School of Environment and Information Sciences, Yokohama National University, Yokohama, Japan.
University of Grenoble Alpes, INRAE, LESSEM, Grenoble, France.
Department of Plant Sciences, University of Oxford, Oxford, UK.
Max-Planck-Institute for Biogeochemistry, Jena, Germany.
Smithsonian Tropical Research Institute, Balboa, Ancón, Panama.

Community composition is a primary determinant of how biodiversity change influences ecosystem functioning and, therefore, the relationship between biodiversity and ecosystem functioning (BEF). We examine the consequences of community composition across six structurally realistic plant community models. We find that a positive correlation between species’ functioning in monoculture versus their dominance in mixture with regard to a specific function (the “function-dominance correlation”) generates a positive relationship between realised diversity and ecosystem functioning across species richness treatments. However, because realised diversity declines when few species dominate, a positive function-dominance correlation generates a negative relationship between realised diversity and ecosystem functioning within species richness treatments. Removing seed inflow strengthens the link between the function–dominance correlation and BEF relationships across species richness treatments but weakens it within them. These results suggest that changes in species’ identities in a local species pool may more strongly affect ecosystem functioning than changes in species richness.

中文翻译：

功能-优势相关性驱动生物多样性-生态系统功能关系的方向和强度

群落组成是决定生物多样性变化如何影响生态系统功能以及生物多样性与生态系统功能 (BEF) 之间关系的主要决定因素。我们研究了六个结构真实的植物群落模型中群落组成的后果。我们发现，物种在单一栽培中的功能与其在混合中的优势之间在特定功能（“功能-优势相关性”）之间的正相关在物种丰富度处理中实现的多样性和生态系统功能之间产生了正相关。然而，因为当少数物种占主导地位时，实现的多样性下降，正的功能-优势相关性在物种丰富度处理中产生了实现的多样性和生态系统功能之间的负相关。去除种子流入加强了跨物种丰富度处理的功能-优势相关性和 BEF 关系之间的联系，但削弱了它们内部的联系。这些结果表明，与物种丰富度的变化相比，当地物种库中物种身份的变化可能对生态系统功能的影响更大。

更新日期：2021-08-10

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