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首页> 外文期刊>ICES Journal of Marine Science >A model study of the large-scale transport of fish eggs in the Kattegat in relation to egg density
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A model study of the large-scale transport of fish eggs in the Kattegat in relation to egg density

机译：关于Kattegat中鱼卵的大规模运输与卵密度的关系的模型研究

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A process-oriented model, with high vertical resolution, has been used to investigate variation in the transport offish eggs and early larvae in relation to egg density. The main focus is on gadoid eggs from the spawning grounds in the southern Kattegat. Additionally, transport from the neighbouring areas, the central Kattegat and OEresund, is presented. The model results clearly indicate that transport is dependent on the egg density; lighter eggs are transported northwards whereas heavier eggs are to a larger extent retained or transported southwards. This study suggests that optimum densities in order to promote retention in the southern Kattegat are in the range of 1023-1026 kg m~(-3). Observations from 2005 and 2006 of the vertical distribution of gadoid eggs combined with hydrographical data indicated high concentrations of eggs at the upper part of the pycnocline at densities of 1017-1022 kg m~(-3). Combining the observations and modelling results on amount of dispersal and retention, suggests that gadoid eggs are mainly retained in the southern Kattegat (although shifted from maximum retention density) and simultaneously dispersed northwards. Even though the results of the study are described in the context of gadoid eggs, the results are applicable for other marine species with pelagic stages and buoyant particles within the tested density range.
机译：具有高垂直分辨率的面向过程的模型已用于研究鱼卵和早期幼虫的运输相对于卵密度的变化。主要重点是南部Kattegat产卵场中的华丽蛋。此外，还介绍了从邻近地区，中部Kattegat和OEresund的运输。模型结果清楚地表明，转运取决于蛋的密度。较轻的鸡蛋向北运输，而较重的鸡蛋在很大程度上被保留或向南运输。这项研究表明，为了促进在Kattegat南部的滞留，最佳密度在1023-1026 kg m〜（-3）范围内。从2005年和2006年观察到的类蛋的垂直分布与水文数据相结合，表明在比浓菌碱上部蛋的浓度较高，密度为1017-1022 kg m〜（-3）。结合观测结果和建模结果对扩散和滞留量的研究结果，我们得出结论认为，角质蛋主要滞留在Kattegat南部（尽管从最大滞留密度转移），并同时向北散布。即使研究结果是在类蛋的情况下描述的，该结果也适用于其他具有浮游阶段和浮力粒子在测试密度范围内的海洋物种。

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