ROLE OF EDDY PUMPING IN ENHANCING PRIMARY PRODUCTION IN THE OCEAN
ROLE OF EDDY PUMPING IN ENHANCING PRIMARY PRODUCTION IN THE OCEAN
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DOI：
10.1038/352055a0
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发表时间：
1991-07-04
期刊：
影响因子：
64.8
通讯作者：
BIENFANG, PK
中科院分区：
文献类型：
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作者：
FALKOWSKI, PG;ZIEMANN, D;BIENFANG, PK
在开阔洋初级生产的稳态模型中，营养物的向上通量通过向海洋深处输出颗粒物来平衡。出口生产代表了碳生产对大气和海洋之间二氧化碳净交换的生物效应。根据氧气使用率1或热通量2的计算，对输出产量的地球化学估计是根据生物测量3-5确定的产量的两到三倍。对不同估计数的一个可能解释是，根据独立的地球化学信号计算的出口产量太高。另一个是生物测量严重欠采样的情景养分注入透光带1，4。涡流泵送代表营养物注入的可能机制之一1。在这里，我们研究生产的增强，在亚热带太平洋的气旋涡流与仪器，使我们能够克服采样问题。我们的研究结果表明，涡流泵显着刺激初级生产，并在上层贫营养海洋的旋涡外的浮游植物没有增长到其最大相对比增长率附近。但是，如果生产的相对提高是典型的，我们的研究结果表明，涡流泵将提高总的初级生产力只有约20%。
IN steady-state models of primary production in the open ocean, the upward fluxes of nutrients are balanced by the export of particulate production to the ocean depths. Export production represents the biological effect of carbon production on the net exchange of carbon dioxide between the atmosphere and the ocean. Geochemical estimates of exported production, based on calculations of rates of oxygen usage 1 or heat fluxes 2 are two to three times as high as those determined from biological measurements 3-5. One possible explanation for the differing estimates is that export production, calculated from independent geochemical signals, is too high. Another is that biological measurements severely undersample episodic nutrient injections into the photic zone 1,4. Eddy pumping represents one of the possible mechanisms of nutrient injection 1. Here we examine the enhancement of production by a cyclonic eddy in the subtropical Pacific with instrumentation that allows us to overcome the sampling problem. Our results reveal that eddy pumping markedly stimulates primary production, and that phytoplankton in the upper oligotrophic ocean outside the eddy are not growing near their maximum relative specific growth rates. But if the relative enhancement of production is typical, our results suggest that eddy pumping would enhance total primary production by only approximately 20%.