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首页> 外文期刊>ICES Journal of Marine Science >Modelling the migration of post-smolt Atlantic salmon (Salmo salar) in the Northeast Atlantic
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Modelling the migration of post-smolt Atlantic salmon (Salmo salar) in the Northeast Atlantic

机译:模拟后大西洋大西洋鲑(Salmo salar)的迁徙

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摘要

The migration of post-smolt Atlantic salmon (Salmo salar) during their first 4 months at sea in the Northeast Atlantic was simulated using an individual-based model that combined a particle-tracking scheme with growth and behaviour routines. The migration was decomposed into both passive pelagic drift with the surface currents, provided by an ocean model, and active horizontal swimming behaviour. The active swimming direction was aligned with the surface current. Swimming speed was a function of body length and calculated from recaptured tagged salmon. Releases of particles in the model were made to the west of Ireland and to the southwest of Norway. The modelled post-smolt distributions were compared with the observed distributions, and a sensitivity analysis using different swimming speeds was performed. The strength and direction of the flow can transport the post-smolts towards areas with favourable feeding conditions. However, in some areas, the direction of migration was sensitive to interannual changes in the windforcing, leading the post-smolts to areas with a different environment and prey. Inclusion in the swimming behaviour of a preference for water with higher temperature and salinity displaced the northward migration more offshore, away from coastal areas.
机译:使用基于个体的模型(结合颗粒追踪方案与生长和行为常规),模拟了在大西洋大西洋东北部熏鲑后的大西洋鲑(Salmo salar)在头四个月的迁移。迁移被分解为由海洋模型提供的具有表面流的被动中上层漂流和主动水平游泳行为。有效游泳方向与表面电流对齐。游泳速度是身体长度的函数,由重新捕获的带标签鲑鱼计算得出。模型中的粒子释放是在爱尔兰西部和挪威西南部进行的。将模型化的后排气味与观察到的分布进行比较,并使用不同的游泳速度进行敏感性分析。流动的强度和方向可以将后蜕皮运送到饲喂条件良好的地区。但是,在某些地区,迁徙的方向对风枪的年际变化很敏感,从而将后软体动物转移到环境和猎物不同的地区。对游泳行为的偏好包括对温度和盐分较高的水的偏爱,使向北的迁移更多地移至离海岸较远的海岸地区。

著录项

  • 来源
    《ICES Journal of Marine Science》 |2012年第9期|p.1616-1624|共9页
  • 作者单位

    Institute of Marine Research, PO Box 1870 Nordnes, Bergen NO-S817, Norway,Bjerknes Centre for Climate Research, PO Box 7810, Bergen NO-S020, Norway;

    Marine Scotland Science, Freshwater Laboratory, Faskally, Pitlochry PH16 4LB, Scotland;

    Norwegian Institute for Nature Research Gaustadalleen 27, Oslo NO-0349, Norway;

    Norwegian Institute for Nature Research, PO Box 5685 Sluppen, Trondheim NO-7485, Norway;

    Faroe Marine Research Institute, PO Box 3051, Torshavn FO-110, Faroe Islands;

    Institute of Marine Research, PO Box 1870 Nordnes, Bergen NO-S817, Norway;

    Institute of Marine Research, PO Box 1870 Nordnes, Bergen NO-S817, Norway;

    Marine Institute, Furnace, Newport, Co. Mayo, Ireland;

    Institute of Marine Research, PO Box 1870 Nordnes, Bergen NO-S817, Norway,Bjerknes Centre for Climate Research, PO Box 7810, Bergen NO-S020, Norway;

    School of biological, Earth and Environmental Sciences, University College Cork, Cork, Ireland;

    Institute of Marine Research, PO Box 1870 Nordnes, Bergen NO-S817, Norway;

    Marine Institute, Furnace, Newport, Co. Mayo, Ireland;

    Marine Scotland Science, Freshwater Laboratory, Faskally, Pitlochry PH16 4LB, Scotland;

    Institute of Marine Research, PO Box 1870 Nordnes, Bergen NO-S817, Norway;

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

    atlantic salmon; currents; distribution; genetics; migration; particle tracking; salinity; temperature;

    机译:大西洋三文鱼;电流分配;遗传学移民;粒子跟踪;盐度;温度;

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