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Habitat complexity impacts persistence and species interactions in an intertidal whelk

机译：栖息地的复杂性影响潮间带的持久性和物种相互作用

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摘要

Although experiments have shown that habitat structure may influence the distribution of species and species interactions, these effects are still not commonly integrated into studies of community dynamics. Since habitat structure often varies within and among communities, this may limit our understanding of how various factors influence communities. Here, we examined how mussel bed complexity (the presence and thickness of mussel layers) influenced the persistence of whelks (Nucella emarginata) and interactions with a top predator (ochre sea stars, Pisaster ochraceus) and prey (mussels, Mytilus californianus). Results from a mark-recapture experiment indicate that whelk recapture rates are higher in more complex habitats, and laboratory experiments demonstrate that habitat complexity affects whelk feeding, growth, and nonconsumptive interactions with a keystone predator. Habitat complexity therefore has direct effects on species and also may lead to trade-offs among feeding, refuge, and other factors, potentially influencing the distribution of whelks and the effects of both whelks and sea stars on intertidal communities. These results demonstrate that habitat structure may play an important role in intertidal communities and other habitats and should be further considered in the experimental design of future studies of community dynamics.
机译：尽管实验表明栖息地结构可能影响物种分布和物种相互作用，但这些影响仍未普遍纳入社区动态研究中。由于栖息地结构经常在社区内部和社区之间发生变化，因此这可能会限制我们对各种因素如何影响社区的理解。在这里，我们研究了贻贝床的复杂性（贻贝层的存在和厚度）如何影响海螺（Nucella emarginata）的持久性以及与顶级捕食者（och鱼海星，Pi鱼鱼）和猎物（贻贝，Mytilus californianus）的相互作用。标记捕获实验的结果表明，在更复杂的栖息地中，鲸的捕获率更高，而实验室实验表明，栖息地的复杂性会影响与基石捕食者的麋的摄食，生长和非消费性相互作用。因此，栖息地的复杂性直接影响物种，还可能导致取食，避难所和其他因素之间的权衡取舍，从而可能影响海螺的分布以及海螺和海星对潮间带群落的影响。这些结果表明，栖息地结构可能在潮间带群落和其他栖息地中发挥重要作用，并应在未来社区动力学研究的实验设计中进一步考虑。

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  • 来源
    《Marine biology》 |2012年第12期|2867-2874|共8页
  • 作者

    J. Stephen Gosnell; Jamie B. DiPrima; Steven D. Gaines;

  • 作者单位

    Department of Ecology, Evolution, and Marine Biology, University of California, Santa Barbara, CA 93106, USA;

    Department of Ecology, Evolution, and Marine Biology, University of California, Santa Barbara, CA 93106, USA;

    Department of Ecology, Evolution, and Marine Biology, University of California, Santa Barbara, CA 93106, USA,Bren School of Environmental Science and Management, University of California, Santa Barbara, CA 93106, USA;

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