The relationship between Pacific hake (Merluccius productus) distribution and poleward subsurface flow in the California Current System
The relationship between Pacific hake (Merluccius productus) distribution and poleward subsurface flow in the California Current System
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DOI：
10.1139/f06-139
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发表时间：
2006-12-01
影响因子：
2.4
通讯作者：
Hendrix, Albert N.
中科院分区：
文献类型：
--
作者：
Agostini, Vera N.;Francis, Robert C.;Hendrix, Albert N.
为了寻找可能影响太平洋黑鳕（Merluccius productus）取食洄游范围的海洋条件，我们分析了1995年和1998年由美国国家海洋渔业部收集的数据，包括黑鳕的丰度和分布（通过回声积分）、沿岸水流的强度和分布（来自声学多普勒洋流剖面仪）和温度（电导率-温度-深度剖面）。研究结果表明，太平洋鳕鱼与地下极流有关，而与特定的温度范围无关。在本研究的两年中，海客分布和暗流特征的时空格局特征。我们认为，该地区的流向决定了成年鳕鱼的栖息地，其流动特性有助于或阻碍了种群的向极地迁移。我们得出结论，尽管物理过程可能不直接影响鱼类生产，但它们可能是大尺度海洋-大气变化与远洋鱼类分布之间的联系。
In a search for ocean conditions potentially affecting the extent of Pacific hake (Merluccius productus) feeding migrations, we analyzed data collected in 1995 and 1998 by the National Marine Fisheries Service on abundance and distribution of hake (by echo integration), intensity and distribution of alongshore flow (from acoustic Doppler current profiler), and temperature (conductivity-temperature-depth profiles). Our results show that Pacific hake are associated with subsurface poleward flow and not a specific temperature range. Temporal and spatial patterns characterize both hake distribution and undercurrent characteristics during the two years of this study. We suggest that poleward flow in this area defines adult hake habitat, with flow properties aiding or impeding the poleward migration of the population. We conclude that although physical processes may not directly affect fish production, they may be the link between large-scale ocean-atmosphere variability and pelagic fish distribution.