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Experimental niche evolution alters the strength of the diversity-productivity relationship

机译：实验性生态位演化改变了多样性-生产力关系的强度

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摘要

The relationship between biodiversity and ecosystem functioning (BEF) has become a cornerstone of community and ecosystem eco-logy and an essential criterion for making decisions in conser-vation biology and policy planning. It has recently been proposed that evolutionary history should influence the BEF relationship because it determines species traits and, thus, species' ability to exploit resources. Here we test this hypothesis by combining experimental evolution with a BEF experiment. We isolated 20 bacterial strains from a marine environment and evolved each to be generalists or specialists. We then tested the effect of evolutionary history on the strength of the BEF relationship with assemblages of 1 to 20 species constructed from the specialists, generalists and ancestors. Assemblages of generalists were more productive on average because of their superior ability to exploit the environmental heterogeneity. The slope of the BEF relationship was, however, stronger for the specialist assemblages because of enhanced niche complementarity. These results show how the BEF relationship depends critically on the legacy of past evolutionary events.
机译：生物多样性与生态系统功能（BEF）之间的关系已成为社区和生态系统生态学的基石，并且是在保护生物学和政策规划中做出决策的重要标准。最近有人提出，进化史应该影响BEF关系，因为它决定了物种特征，从而决定了物种开发资源的能力。在这里，我们通过结合BEF实验和实验发展来检验这一假设。我们从海洋环境中分离出20个细菌菌株，并进化为通才或专家。然后，我们用专家，通才和祖先构造的1至20个物种的组合测试了进化史对BEF关系强度的影响。由于通才专家们善于利用环境异质性，因此他们的平均生产率更高。但是，由于利基互补性增强，对于专家组而言，BEF关系的斜率更大。这些结果表明，BEF关系如何严重依赖于过去的进化事件的遗产。

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  • 来源
    《Nature》 |2011年第7328期|p.89-92|共4页
  • 作者

    Dominique Gravel; Thomas Bell; Claire Barbera; Thierry Bouvier; Thomas Pommier; Patrick Venail; Nicolas Mouquet;

  • 作者单位

    Universite du Quebec a Rimouski, Departementde Biologie, Chimieet Geographie, 300 Allee des Ursulines, Quebec G5L 3A1, Canada,Institutdes Sciences de Involution UMR 5554, Centre National de la Recherche Scientifique, Universite Montpellier 2, CC 065, Place Eugene Bataillon, 34095 Montpellier Cedex 05, France;

    Department of Zoology, University of Oxford, Oxford 0X1 3PS, UK;

    Institutdes Sciences de Involution UMR 5554, Centre National de la Recherche Scientifique, Universite Montpellier 2, CC 065, Place Eugene Bataillon, 34095 Montpellier Cedex 05, France;

    Ecosystemes Lagunaires UMR 5119, Centre National de la Recherche Scientifique, Universite Montpellier 2, CC 093, Place Eugene Bataillon, 34095 Montpellier Cedex 05, France;

    Ecosystemes Lagunaires UMR 5119, Centre National de la Recherche Scientifique, Universite Montpellier 2, CC 093, Place Eugene Bataillon, 34095 Montpellier Cedex 05, France,Laboratoire d'Ecologie Microbienne (UMR 5557, USC 1193), Universite Lyon I, INRA.CNRS.BatimentG. Mendel, 43 Boulevard dull Novembre 1918,69622 Villeurbanne, France;

    Institutdes Sciences de Involution UMR 5554, Centre National de la Recherche Scientifique, Universite Montpellier 2, CC 065, Place Eugene Bataillon, 34095 Montpellier Cedex 05, France,Centrode Investigaciones Microbiologicas, Universidad de los Andes, Carrera 1A No. 18A-10, Oficina A305, Bogota, Colombia;

    Institutdes Sciences de Involution UMR 5554, Centre National de la Recherche Scientifique, Universite Montpellier 2, CC 065, Place Eugene Bataillon, 34095 Montpellier Cedex 05, France;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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