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首页> 外文期刊>ICES Journal of Marine Science >Effects of clam rake harvesting on the intertidal Ruditapes habitat of the English Channel
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Effects of clam rake harvesting on the intertidal Ruditapes habitat of the English Channel

机译：蛤ke耙收获对英吉利海峡潮间带Ruditapes生境的影响

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摘要

Recreational and professional clam fishing was an important activity on the extensive intertidal zone of the western Cotentin coast (western English Channel). A variety of fishing gear was used to harvest the target species: the European clam Ruditapes decussatus (Linnaeus, 1758) and the introduced Manila clam R. philippinarum (Adams and Reeve, 1850). In this study, we studied the effect of rake harvesting during the spring tides of February-March 2014, following an experimental design with a control station and three stations impacted by rake harvesting in three sediment types: sandy, gravelly, and mixed gravelly rocky habitats. No significant sediment and macrofauna changes occurred at the three sites after rake harvesting. Nevertheless, the number of clams decreased significantly after raking on the gravelly habitat, whereas in the other two habitats, sediment transport in this high-energy hydrodynamic environment was able to transfer clams and other macrofauna species across the fishing sites, thus minimizing the effects of rake harvesting. Therefore, although the effect of rake harvesting appeared limited during winter, the regional impact (high fishing pressure along 60 km of coast) and increase of recreational fishers during summer needed to be studied in the future.
机译：娱乐性和专业性的蛤fishing捕鱼是科滕丁西部海岸（西英吉利海峡）广泛潮间带的重要活动。人们使用了各种渔具来收获目标物种：欧洲蛤仔（Ruditapes decussatus，Linnaeus，1758年）和引进的马尼拉蛤仔R.philippinarum（Adams and Reeve，1850年）。在这项研究中，我们研究了2014年2月至3月春季退潮期间耙式收割的影响，并进行了实验设计，其中控制站和三个站受到耙式收割影响的三种沉积物类型：沙质，砾石和混合砾石生境。犁耙收获后的三个地点没有发生明显的沉积物和大型动物变化。然而，在砾石栖息地上耙蛤后，蛤的数量显着减少，而在其他两个栖息地中，在这种高能量水动力环境中的泥沙运输能够将蛤和其他大型动物物种转移到整个捕捞地点，从而最大程度地减少了捕捞活动的影响。耙子收割。因此，尽管冬季收获耙的效果有限，但将来仍需研究区域性影响（沿沿海60 km的捕鱼压力高）和夏季休闲渔民的增加。

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  • 来源
    《ICES Journal of Marine Science》 |2015年第9期|2663-2673|共11页
  • 作者

    Beck Florence; Pezy Jean-Philippe; Baffreau Alexandrine; Dauvin Jean-Claude;

  • 作者单位

    Univ Caen Basse Normandie, UMR CNRS 6143, M2C, Lab Morphodynam Continentale & Cotiere, F-14000 Caen, France|UMR CNRS 6143, M2C, F-14000 Caen, France|Univ Caen Basse Normandie, CREC, Stn Marine, F-14530 Luc Sur Mer, France;

    Univ Caen Basse Normandie, UMR CNRS 6143, M2C, Lab Morphodynam Continentale & Cotiere, F-14000 Caen, France|UMR CNRS 6143, M2C, F-14000 Caen, France|Univ Caen Basse Normandie, CREC, Stn Marine, F-14530 Luc Sur Mer, France;

    Univ Caen Basse Normandie, UMR CNRS 6143, M2C, Lab Morphodynam Continentale & Cotiere, F-14000 Caen, France|UMR CNRS 6143, M2C, F-14000 Caen, France|Univ Caen Basse Normandie, CREC, Stn Marine, F-14530 Luc Sur Mer, France;

    Univ Caen Basse Normandie, UMR CNRS 6143, M2C, Lab Morphodynam Continentale & Cotiere, F-14000 Caen, France|UMR CNRS 6143, M2C, F-14000 Caen, France|Univ Caen Basse Normandie, CREC, Stn Marine, F-14530 Luc Sur Mer, France;

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  • 关键词

    macrofauna; raking fishing; Ruditapes decussatus; Ruditapes philippinarum; sediment; size classes;

    机译：大型动物;耙鱼捕鱼;圆角大黄鱼;菲律宾大黄鱼;沉积物;大小等级;

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