中尺度涡旋推动了亚热带太平洋海域硅输出量的增加。

Mesoscale eddies drive increased silica export in the subtropical Pacific Ocean.

作者信息

Benitez-Nelson Claudia R, Bidigare Robert R, Dickey Tommy D, Landry Michael R, Leonard Carrie L, Brown Susan L, Nencioli Francesco, Rii Yoshimi M, Maiti Kanchan, Becker Jamie W, Bibby Thomas S, Black Wil, Cai Wei-Jun, Carlson Craig A, Chen Feizhou, Kuwahara Victor S, Mahaffey Claire, McAndrew Patricia M, Quay Paul D, Rappé Michael S, Selph Karen E, Simmons Melinda P, Yang Eun Jin

机构信息

Department of Geological Sciences and Marine Science Program, University of South Carolina, Columbia, SC 29208, USA.

出版信息

Science. 2007 May 18;316(5827):1017-21. doi: 10.1126/science.1136221.

DOI:10.1126/science.1136221

PMID:17510362

Abstract

Mesoscale eddies may play a critical role in ocean biogeochemistry by increasing nutrient supply, primary production, and efficiency of the biological pump, that is, the ratio of carbon export to primary production in otherwise nutrient-deficient waters. We examined a diatom bloom within a cold-core cyclonic eddy off Hawaii. Eddy primary production, community biomass, and size composition were markedly enhanced but had little effect on the carbon export ratio. Instead, the system functioned as a selective silica pump. Strong trophic coupling and inefficient organic export may be general characteristics of community perturbation responses in the warm waters of the Pacific Ocean.

摘要

中尺度涡旋可能通过增加营养物质供应、初级生产力以及生物泵效率（即在营养缺乏的水域中碳输出与初级生产力的比率）在海洋生物地球化学中发挥关键作用。我们研究了夏威夷附近冷核气旋涡旋内的硅藻大量繁殖现象。涡旋的初级生产力、群落生物量和大小组成显著增强，但对碳输出比率影响不大。相反，该系统起到了选择性硅泵的作用。强烈的营养耦合和低效的有机物质输出可能是太平洋温暖水域中群落扰动响应的普遍特征。