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首页> 外文期刊>Marine ecology progress series >Physical-biological coupling in Monterey Bay, California: topographic influences on phytoplankton ecology
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Physical-biological coupling in Monterey Bay, California: topographic influences on phytoplankton ecology

机译：加利福尼亚蒙特利湾的物理-生物耦合：地形对浮游植物生态学的影响

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摘要

Physical-biological couplings impacting phytoplankton ecology are examined with synoptic, high-resolution observations of Monterey Bay, California. Influences of submarine canyon and shelf break topography on the physical-biological couplings are supported by 2 case studies. In the first case study, benthic-pelagic coupling was observed in southern shelf waters where a turbid plume extended from the bottom at ～60 m deep to the base of a phytoplankton layer centered at -10 m deep. The alongshelf scale of the plume ranged from ～5 km near the bottom to -1 km at its intersection with the phytoplankton layer. In situ and remote sensing data support the influence of Monterey Canyon on circulation forcing the benthic-pelagic coupling. In the second case study, a frontal zone and adjacent waters were rapidly surveyed over ～20 km~2 of the northern shelf. The front was associated with an isopycnal ridge/trough structure, surface slick, and frontal eddy < 1 km in diameter. The magnitude and vertical location of a chlorophyll maximum layer were closely coupled with the physical environment through the frontal zone. The layer was dispersed by the isopycnal ridge and frontal eddy, and concentrated in the isopycnal trough and along the periphery of the eddy. Influence of an internal wave generated by interaction of tidal currents with the shelf break is supported by the observed surface slick, measured water velocities, and the proximity and orientation of the shelf break. Significant and persistent influences of topography on phytoplankton ecology in Monterey Bay are indicated.
机译：通过加利福尼亚州蒙特雷湾的天气高分辨率天气观测研究了影响浮游植物生态的物理-生物耦合。 2个案例研究支持了海底峡谷和架子破裂地形对物理生物耦合的影响。在第一个案例研究中，在南部陆架水域观察到了底栖-上层耦合，其中浑浊的羽状物从约60 m深的底部延伸到以-10 m深为中心的浮游植物层的底部。羽状体的沿岸尺度范围从底部附近的〜5 km到与浮游植物层相交处的-1 km。实地和遥感数据支持蒙特利峡谷对环流的影响，迫使底栖-浮游耦合。在第二个案例研究中，在北陆架的约20 km〜2范围内，对额带和邻近水域进行了快速调查。前部与等腰脊/槽结构，表面光滑和直径小于1 km的额涡相关。叶绿素最大层的大小和垂直位置通过额叶区与物理环境紧密耦合。该层被等腰和额涡分散，并集中在等槽和沿涡的外围。潮汐与架子破裂相互作用所产生的内波的影响由观测到的表面浮油，测得的水速以及架子破裂的接近度和方向来支持。指出了地形对蒙特雷湾浮游植物生态学的重大和持续影响。

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