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首页> 外文期刊>Estuarine Coastal and Shelf Science >Benthic-pelagic uncoupling between the Northern Patagonian Frontal System and Patagonian scallop beds
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Benthic-pelagic uncoupling between the Northern Patagonian Frontal System and Patagonian scallop beds

机译：北巴塔哥尼亚额叶系统和巴塔哥尼亚扇贝床之间的底-上层解耦

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摘要

Availability of planktonic food in the bottom is the most important factor to explain the persistence and recurrent localization of Patagonian scallop (Zygochlamys patagonica) populations. The establishment of the scallop Sea Bay bed (SBB) has been related with food supply from the Northern Patagonian Frontal System (NPFS). In this article outputs from high resolution numerical models combined with particle tracking methods were used to identify for the first time potential physical mechanisms of food transfer. The model results showed no evidence of benthic-pelagic coupling between the NPFS and the SBB. They also revealed that the dominant instantaneous semidiurnal tidal currents and the mean N-NE flow on the inner-middle Patagonian shelf are the main dynamical mechanisms preventing particles released at the surface of the NPFS to reach the SBB area. Sensitivity studies changing the stochastic numerical method for solving the particle trajectories, the release month and location of the particles, the magnitude of the horizontal turbulent diffusion coefficient and the frequency of the wind forcing did not alter this conclusion significantly.
机译：底部浮游食物的可利用性是解释巴塔哥尼亚扇贝（Zygochlamys patagonica）种群的持久性和复发性定位的最重要因素。扇贝海湾河床（SBB）的建立与北巴塔哥尼亚额叶系统（NPFS）的食物供应有关。在本文中，高分辨率数值模型的输出与粒子跟踪方法相结合，首次用于识别潜在的食物转移物理机制。模型结果表明，没有证据表明NPFS和SBB之间存在底栖-上层耦合。他们还发现，主要的瞬时半日潮流和巴塔哥尼亚中内陆中部的平均N-NE流是阻止NPFS表面释放的颗粒到达SBB区域的主要动力学机制。敏感性研究改变了求解颗粒轨迹的随机数值方法，颗粒的释放月份和位置，水平湍流扩散系数的大小以及风力的频率，并没有明显改变这一结论。

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