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Repeatable sediment associations of burrowing bivalves across six European tidal flat systems

机译:在六个欧洲滩涂系统中挖洞双壳类的可重复沉积物关联

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摘要

Burrowing bivalves are associated with particular sediment types within sedimentary systems. The degree to which bivalve sediment associations are repeatable across systems has seldom been investigated. To investigate whether such repeatability exists across tidal flats, we compared adult and juvenile distributions of 3 bivalve species (Cerastoderma edule, Scrobicularia plana, Macoma balthica) across 6 European tidal flats. Across systems, the adult bivalves showed fairly repeatable distributions, with C. edule occurring in sandy sediments and M. balthica and S. plana occurring in muddy sediments. Exceptions were observed in systems composed primarily of muddy sediments (Aiguillon Bay and Marennes-Oleron Bay) and the Dutch Wadden Sea. Interestingly, juveniles and adults of C. edule and S. plana showed similar distributions across systems. M. balthica juveniles and adults showed habitat separation in 3 of the 6 studied systems; in 2 of these, it has been shown previously that juvenile M. balthica settle in mud at high tidal levels and migrate to lower sandier flats later in life. The high occurrence of juvenile M. balthica towards high sandy flats in Mont Saint-Michel Bay suggests that juveniles might choose high tidal flats rather than muddy sediments per se. A repeatable association in adults and juveniles with respect to sediment could suggest that juveniles actively settle in the proximity of the adults and/or that juveniles settling away from the adults incur a higher mortality due to either predation, physiological stress, or other factors.
机译:穴居双壳类动物与沉积系统中的特定沉积物类型有关。很少研究双壳类沉积物在整个系统中可重复的程度。为了调查在潮滩之间是否存在这种可重复性,我们比较了6个欧洲潮滩中3种双壳类动物(角皮病,平菇,斑秃)的成年和幼年分布。在整个系统中,成年的双壳类动物表现出相当可重复的分布,淡色梭状芽胞菌出现在沙质沉积物中,而波罗的麦芽孢杆菌和扁平藻在泥质沉积物中发生。在主要由泥泞的沉积物组成的系统中(Aiguillon湾和Marennes-Oleron湾)和荷兰Wadden海发现了例外。有趣的是,C。edule和S.plana的幼虫和成虫在整个系统中的分布相似。在研究的6个系统中的3个中,M。balthica少年和成年动物显示出栖息地分离;在其中的2种中,以前已经证明,幼小M. balthica处于高潮汐水平的泥浆中,并在生活的后期迁移到较低的沙地平地。在圣米歇尔山高地上,少年秃头towards出现在高沙地上的现象表明,少年们可能选择高潮滩而不是泥泞的沉积物本身。成年动物和少年在沉积物方面的可重复关联可能表明,少年活跃地定居在成年动物附近和/或由于捕食,生理压力或其他因素,定居在成年动物之外的少年会导致更高的死亡率。

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  • 来源
    《Marine ecology progress series》 |2009年第30期|87-98|共12页
  • 作者单位

    Department of Marine Ecology, Royal Netherlands Institute for Sea Research (NIOZ), PO Box 59, 1790 AB Den Burg, Texel, The Netherlands Centre for Ecological and Evolutionary Studies, University of Groningen, PO Box 14, 9750 AA Haren, The Netherlands Western Australian Department of Environment and Conservation (DEC), WA Wildlife Research Centre, PO Box 51, Wanneroo, Western Australia 6065, Australia National Institute of Water & Atmospheric Research, PO Box 11115, Gate 10 Silverdale Road, Hamilton 3216, New Zealand;

    Department of Marine Ecology, Royal Netherlands Institute for Sea Research (NIOZ), PO Box 59, 1790 AB Den Burg, Texel, The Netherlands;

    Department of Marine Ecology, Royal Netherlands Institute for Sea Research (NIOZ), PO Box 59, 1790 AB Den Burg, Texel, The Netherlands;

    Department of Marine Ecology, Royal Netherlands Institute for Sea Research (NIOZ), PO Box 59, 1790 AB Den Burg, Texel, The Netherlands Centre for Ecological and Evolutionary Studies, University of Groningen, PO Box 14, 9750 AA Haren, The Netherlands;

    Littoral Environnement et Societes, UMR6250, Universite de La Rochelle-CNRS, 17000 La Rochelle, France;

    Department of Marine Ecology, Royal Netherlands Institute for Sea Research (NIOZ), PO Box 59, 1790 AB Den Burg, Texel, The Netherlands Centre for Ecological and Evolutionary Studies, University of Groningen, PO Box 14, 9750 AA Haren, The Netherlands;

    Department of Marine Ecology, Royal Netherlands Institute for Sea Research (NIOZ), PO Box 59, 1790 AB Den Burg, Texel, The Netherlands;

    Department of Marine Ecology, Royal Netherlands Institute for Sea Research (NIOZ), PO Box 59, 1790 AB Den Burg, Texel, The Netherlands Centre for Ecological and Evolutionary Studies, University of Groningen, PO Box 14, 9750 AA Haren, The Netherlands;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    habitat suitability model; species distribution; logistic regression; german wadden sea; the wash;

    机译:生境适应性模型;物种分布;逻辑回归德国瓦登海;洗;

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