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首页> 外文期刊>Estuarine Coastal and Shelf Science >Tidal and annual variability of the population structure of Eurytemora affinis in the middle part of the Seine Estuary during 2005
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Tidal and annual variability of the population structure of Eurytemora affinis in the middle part of the Seine Estuary during 2005

机译：2005年塞纳河中游近缘Eurytemora affinis种群结构的潮汐和年度变化

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摘要

Annual variability in abundance and population structure of the copepod Eurytemora affinis was studied in the maximum turbidity zone of the Seine Estuary in 2005. An Eulerian sampling strategy was applied monthly from March to July and from September to December. Chlorophyll a and suspended particulate matter (SPM) concentration, copepod abundance and stage distribution, and phytoplankton abundance were measured in sub-surface and near-bottom water during the ebb phase. Total E. affinis abundance was at a maximum in March and April (>200 × 10~3 ind. m~(-3)), and decreased from May to September (<25 × 10~3 ind. m~(-3)). This decrease corresponds to annual increases in temperature, salinity, chlorophyll a concentration and phytoplankton abundance, which was dominated by large diatoms, and decreases in SPM and river discharge. The phenology observed in 2005 was almost two months earlier compared to previous studies in the 1990s, when E. affinis reached maximum abundance in May and June. The low proportion of nauplii (<50%) in the population and high abundance of ovigerous females suggests that low recruitment is probably related to anomalously low temperatures in late winter (<5 ℃). Whatever the horizontal position of the population in the estuary, adult and late copepodid stages are distributed in higher salinity than naupliar stages. Overall E. affinis population abundance was driven by parameters that characterize water masses at the tidal scale and by river discharge and chlorophyll a at the annual scale. By integrating the tidal effect, the high-frequency sampling protocol used appears to be optimal for investigating annual variability of planktonic communities in megatidal estuaries.
机译：2005年在塞纳河河口最大浊度区研究了the足类Eurytemora affinis的丰度和种群结构的年度变化。3月至7月和9月至12月每月采用欧拉采样策略。在退潮阶段，对地下和近底部水域中的叶绿素a和悬浮颗粒物（SPM）浓度，co足类的丰度和阶段分布以及浮游植物的丰度进行了测量。 3月和4月的总亲和菌丰度最高（> 200×10〜3 ind。m〜（-3）），5月至9月下降（<25×10〜3 ind。m〜（-3） ））。这种减少对应于温度，盐度，叶绿素a浓度和浮游植物丰度的逐年增加，这主要由大型硅藻主导，而SPM和河流流量减少。与1990年代以前的研究相比，2005年观察到的物候要快两个月，1990年代的研究中，血友病菌在5月和6月达到最大丰度。人口中无节幼体的比例较低（<50％），而雌雄同体的丰度较高，这表明低招聘可能与冬季后期（<5℃）的异常低温有关。无论河口人口的水平位置如何，成年和近足纲阶段的盐度分布都高于无节幼体阶段。总体上，大肠杆菌的种群丰度是由潮汐规模的水质特征参数以及年度规模的河水排放量和叶绿素a驱动的。通过整合潮汐影响，所使用的高频采样协议似乎是调查巨潮河口浮游生物群落年度变化的最佳选择。

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  • 来源
    《Estuarine Coastal and Shelf Science》 |2010年第4期|p.245-255|共11页
  • 作者

    David Devreker; Sami Souissi; Juan Carlos Molinero; Delphine Beyrend-Dur; Fernando Gomez; Joelle Forget-Leray;

  • 作者单位

    Universite Lille Nord de France, F-59000 Lille, France USTL, LOG, F-62930 Wimereux, France CNRS, UMR 8187, F-62930 Wimereux, France Laboratoire d'Ecotoxicologie, Milieux Aquatique (LEMA), Faculte des Sciences et, Techniques, Universite du Havre, 76058 Le Havre Cedex, BP 540, France;

    rnUniversite Lille Nord de France, F-59000 Lille, France USTL, LOG, F-62930 Wimereux, France CNRS, UMR 8187, F-62930 Wimereux, France Universite Lille 1, Sciences et Technologies, UMR 8187 LOG, Station Marine de Wimereux, 28 av. Foch, F-62930 Wimereux, France;

    rnLeibniz-Institut fuer Meereswissenschaften, IFM-GEOMAR, FB3, Marine Ecology/Experimental Ecology, Dusternbrooker Weg 20, 24105 Kiel, Germany;

    rnUniversite Lille Nord de France, F-59000 Lille, France USTL, LOG, F-62930 Wimereux, France CNRS, UMR 8187, F-62930 Wimereux, France National Taiwan Ocean University, Institute of Marine Biology, Zooplankton and Coral Reef Laboratory, 2 Pei-Ning Road, 202 Keelung, Taiwan, ROC;

    rnUniversite Lille Nord de France, F-59000 Lille, France USTL, LOG, F-62930 Wimereux, France CNRS, UMR 8187, F-62930 Wimereux, France;

    rnLaboratoire d'Ecotoxicologie, Milieux Aquatique (LEMA), Faculte des Sciences et, Techniques, Universite du Havre, 76058 Le Havre Cedex, BP 540, France;

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  • 正文语种 eng
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  • 关键词

    eurytemora affinis; population structure; river discharge; seasonality; seine estuary; tidal cycles;

    机译：eurytemora affinis;人口结构;河水排放季节性围网河口潮汐周期;

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