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首页> 外文期刊>Estuarine Coastal and Shelf Science >The relationships among hydrodynamics, sediment distribution, and chlorophyll in a mesotidal estuary
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The relationships among hydrodynamics, sediment distribution, and chlorophyll in a mesotidal estuary

机译：中生河口水动力，泥沙分布和叶绿素之间的关系

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摘要

Tidal bars and tidal flats in shallow, mesotidal estuaries are subject to the action of tidal currents and waves. This complex forcing gives rise to large variations in bottom sediments and related benthic ecosystems. In this research we study the spatial relationships among tidal currents, waves, sediment characteristics, chlorophyll a, and pheophytin in the shallow bars and flats of Plum Island Sound, Massachusetts, USA. Waves and tides have a mild effect on the sand grain size and percent of silt and mud of these shallow deposits. Average wave conditions are more important than extreme events, like Nor'-easters, in sediment sorting. The spatial distribution of pheophytin, an indicator of dead micro-phytobenthos, mimics that of silt and mud whereas chlorophyll a, a proxy for the live microphytobenthos stock, is greatest in sandy areas characterized by intermediate values of tidal velocity.
机译：浅水，中流河口的潮汐带和滩涂受潮流和波浪作用。这种复杂的强迫导致底部沉积物和相关底栖生态系统的巨大变化。在这项研究中，我们研究了美国马萨诸塞州Plum Island Sound浅滩和浅滩中潮流，波浪，沉积物特征，叶绿素a和脱镁叶绿素之间的空间关系。波浪和潮汐对这些浅层沉积物的沙粒大小以及淤泥和泥浆的百分比有轻微的影响。在沉积物分类中，平均波浪条件比像Nor'-easters这样的极端事件更为重要。 ophophytin的空间分布是死微植物底栖动物的指示物，模仿了淤泥和泥浆的空间分布，而叶绿素a（活的微植物底栖动物种群的代用品）在以潮汐速度为中间值的沙质地区最大。

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  • 来源
    《Estuarine Coastal and Shelf Science》 |2014年第1期|54-64|共11页
  • 作者

    S. Fagherazzi; G. Mariotti; A.T. Banks; E.J. Morgan; R.W. Fulweiler;

  • 作者单位

    Department of Earth and Environment, Boston University, Boston MA 02215, USA;

    Department of Earth and Environment, Boston University, Boston MA 02215, USA;

    Department of Earth and Environment, Boston University, Boston MA 02215, USA;

    Department of Earth and Environment, Boston University, Boston MA 02215, USA;

    Department of Earth and Environment, Boston University, Boston MA 02215, USA,Department of Biology, Boston University, Boston MA 02215, USA;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    tidal flats; microphytobenthos; tides; waves; sediments;

    机译：滩涂;微型底栖动物潮汐波浪;沉积物;

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