Modelling the advection and diffusion of eggs and larvae of Greenland halibut (Reinhardtius hippoglossoides) in the north-east Arctic
Modelling the advection and diffusion of eggs and larvae of Greenland halibut (Reinhardtius hippoglossoides) in the north-east Arctic
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模拟北极东北部格陵兰大比目鱼 (Reinhardtius hippoglossoides) 卵和幼虫的平流和扩散
DOI：
10.1111/j.1365-2419.2004.00303.x
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发表时间：
2004
期刊：
影响因子：
--
通讯作者：
O. T. Albert
中科院分区：
文献类型：
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作者：
B. Ådlandsvik;A. C. Gundersen;K. Nedreaas;A. Stene;O. T. Albert
自1980年代后期以来，北极东北部格陵兰大比目鱼种群的补充量一直存在很大的不确定性。最初认为在0-3岁时非常低的几年级的丰度在6岁以上时似乎高于预期。这可能是由于对低年级学生的征聘调查目标不明确。目前的工作认为，运输和分散的格陵兰大比目鱼的卵和幼虫的数值模拟，以预测的位置，最初的招聘理由。流场从三维斜压流体动力学模型输入到拉格朗日粒子跟踪模型开发的巴伦支海地区。这些颗粒被释放到产卵场的海流中，沿着沿着从罗弗敦到熊岛（69- 75 ° N）的陆架斜坡。在垂直方向上，粒子可以遵循预定义的深度-年龄曲线，或者保持在固定的深度。该模型系统用于不同年份，以检查漂移模式的变化。结果表明，产卵地点、输移深度和流入巴伦支海的活动是影响幼鱼分布的重要因素。
Since the late 1980s there has been considerable uncertainty in recruitment levels of the north-east Arctic stock of Greenland halibut (Reinhardtius hippoglossoides). The abundance of several year classes, originally considered very low at 0–3 yr age, appeared higher than expected at the age of 6+. This may be due to poor targeting of recruitment surveys of the younger year classes. The present work considers the transport and dispersion of eggs and larvae of Greenland halibut by numerical modelling in order to predict the locations of the initial recruitment grounds. Current fields from a 3D baroclinic hydrodynamic model are fed into a Lagrangian particle-tracking model developed for the Barents Sea area. The particles are released into the current at the spawning field along the shelf slope from Lofoten to Bear Island (69– 75� N). Vertically, the particles can follow a predefined depth-by-age curve or be kept at a fixed depth. This model system is used for different years to examine changes in the drift pattern. The results indicate that spawning location, transport depth and inflowing activity to the Barents Sea are important factors influencing the distribution of juveniles.