Active mesopelagic prokaryotes support high respiration in the subtropical northeast Atlantic Ocean -: art. no. L03608
Active mesopelagic prokaryotes support high respiration in the subtropical northeast Atlantic Ocean -: art. no. L03608
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DOI：
10.1029/2004gl021863
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发表时间：
2005-02-11
影响因子：
5.2
通讯作者：
Alonso-Sáez, L
中科院分区：
文献类型：
--
作者：
Arístegui, J;Duarte, CM;Alonso-Sáez, L
在这里，我们提供的证据，根据原核生物代谢代理和直接估计的耗氧量，在亚热带东北大西洋的中层原核生物组合是一个活跃的。它支持高呼吸（0.22 +/- 0.05 mumol O-2 l（-1）d（-1），相当于68 +/- 8 mmol CO2 m（-2）d（-1）），与同一时期的上层区（64-97 mmol C m（-2）d（-1））相当。我们的研究结果表明，中远洋原核生物在东北亚热带海洋，以及在其他东部边界地区，是重要的碳汇的有机物质平流从高生产力的沿海系统，并将在全球海洋碳循环中发挥关键作用。
Here we provide evidence, based on prokaryote metabolic proxies and direct estimates of oxygen consumption, that the mesopelagic prokaryote assemblage in the subtropical Northeast Atlantic is an active one. It supports a high respiration (0.22 +/- 0.05 mumol O-2 l(-1) d(-1), corresponding to 68 +/- 8 mmol CO2 m(-2) d(-1)), comparable to that of the epipelagic zone during the same period (64-97 mmol C m(-2) d(-1)). Our findings suggest that mesopelagic prokaryotes in the NE subtropical Ocean, as well as in other eastern boundary regions, are important carbon sinks for organic matter advected from the highly productive coastal systems, and would play a key role in the global carbon cycle of the oceans.