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首页> 外文期刊>Marine ecology progress series >Patchiness of macrobenthic invertebrates in homogenized intertidal habitats: hidden spatial structure at a landscape scale
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Patchiness of macrobenthic invertebrates in homogenized intertidal habitats: hidden spatial structure at a landscape scale

机译：均质潮间带栖息地大型底栖无脊椎动物的斑块：景观尺度上的隐藏空间结构

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摘要

Many terrestrial habitats, and certainly man-made systems such as woodland and agricultural habitats, are characterised by a mosaic of different habitat types. In contrast, most seafloors have a rather uniform visual appearance which is enhanced by the cryptic nature of many of their inhabitants. The present study aimed to: (1) describe landscape scale spatial patterns of benthic infauna after evaluating 3 methods for analyzing autocorrelations (Moran's I, semivariance and fractals), (2) compare the benthic patterns with patterns described for other organisms, and (3) highlight shared characteristics. During 4 consecutive years (2002 to 2005) we assessed spatial structuring of 4 intertidal benthic invertebrates (Cerastoderma edule, Macoma balthica, Nereis diversicolor and Nepthys hombergii) in the Wadden Sea, The Netherlands. We annually sampled ～2750 stations based on a 250 m grid, covering an area of ca. 225 km~2. On the basis of simulated spatial distributions, we selected Moran's I to analyze spatial rnpatterns for the following reasons: (1) due to standardization, results can be directly compared, (2) Moran's I is the least difficult to evaluate, since it is related to the familiar Pearson's correlation coefficient, and (3) significance can readily be assessed. The 4 benthic species were all spatially structured at the landscape scale, with spatial features being smaller than the physical structure of the intertidal environment, i.e. the intertidal extent. During the 4 yr, some species changed their distribution, but spatial characteristics, i.e. patch size and amplitude of autocorrelation, remained similar. Higher overall density resulted in stronger autocorrelation with no differences between species. A comparison between spatial structuring of benthic fauna with patterns encountered in other habitats, whether marine or terrestrial, was unsuccessful due to differences in extent and grain. We argue that future research should focus on spatial structure in species' distributions as an ecological relevantrn parameter.
机译：许多陆地生境，当然还有人工系统，例如林地和农业生境，都具有不同生境类型的镶嵌图。相反，大多数海底具有相当均匀的视觉外观，其许多居民的隐秘性质使这种外观得到增强。本研究旨在：（1）在评估3种用于分析自相关的方法（Moran's I，半变异和分形）后描述底栖动物的景观尺度空间格局，（2）比较底栖动物的模式与针对其他生物描述的模式，以及（3 ）突出显示共享特征。在连续的4年（2002年至2005年）中，我们评估了荷兰瓦登海中4种潮间带底栖无脊椎动物（硬皮病，Macoma balthica，Nereis diversicolor和Nepthys hombergii）的空间结构。我们每年以250 m网格为基础，对〜2750个站点进行采样，覆盖约200万个区域。 225公里〜2。基于模拟的空间分布，我们选择Moran's I来分析空间rnpatterns的原因如下：（1）由于标准化，可以直接比较结果；（2）Moran's I是最难评估的，因为它与与熟悉的Pearson相关系数相关，并且（3）显着性很容易评估。这4种底栖动物在景观尺度上都具有空间结构，其空间特征小于潮间带环境的物理结构，即潮间带范围。在4年期间，一些物种改变了其分布，但空间特征（即斑块大小和自相关幅度）保持相似。较高的总体密度导致较强的自相关，而物种之间没有差异。由于范围和谷物的差异，将底栖动物的空间结构与在其他栖息地（无论是海洋的还是陆地的）中遇到的模式进行比较是不成功的。我们认为，未来的研究应将物种分布的空间结构作为生态学相关参数。

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  • 来源
    《Marine ecology progress series》 |2009年第14期|211-224|共14页
  • 作者

    Casper Kraan; Jaap van der Meer; Anne Dekinga; Theunis Piersma;

  • 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;

    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 Animal Ecology Group, Centre for Ecological and Evolutionary Studies (CEES), University of Groningen, PO Box 14, 9750 AA Haren, The Netherlands;

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  • 正文语种 eng
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  • 关键词

    cryptic macrozoobenthos; intertidal; landscape scale; patch size; spatial structure; wadden sea;

    机译：隐性大型动物潮间带景观规模补丁大小;空间结构瓦登海;

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