Photosynthetic community responses to upwelling in mesoscale eddies in the subtropical North Atlantic and Pacific Oceans

被引:89
作者
Bibby, Thomas S. [1 ]
Gorbunov, Maxim Y. [1 ]
Wyman, Kevin W. [1 ]
Falkowski, Paul G. [1 ]
机构
[1] Rutgers State Univ, Inst Marine & Coastal Sci, New Brunswick, NJ 08901 USA
基金
美国国家科学基金会;
关键词
oceanic eddies; phytoplankton; physiology; fluorescence;
D O I
10.1016/j.dsr2.2008.01.014
中图分类号
P7 [海洋学];
学科分类号
0707 ;
摘要
In this paper we summarise the photo-physiological responses of phytoplankton to upwelling of macronutrients in mesoscale eddies in the subtropical North Atlantic (EDDIES project, Sargasso Sea) and subtropical North Pacific (E-FLUX project, Hawaii). The observations, obtained on two sets of cruises over 2 years, occupied six cyclonic eddies and two mode-water eddies. The photosynthetic physiological parameters were measured using a bench-top fluorescence induction and relaxation (FIRe) system and a submersible in situ fast repetition rate fluorometer (FRRF) deployed on an undulating towed vehicle. Both of these instruments were used to provide highly sensitive and well-resolved data on community responses. The responses are dependent on both the type of eddy and its stage of development. Our results indicate that, while cyclonic eddies in the Atlantic and Pacific can increase primary photosynthetic production early in their development, mode-water eddies in the subtropical North Atlantic can support patchy blooms of large diatoms for long periods of time (more than 3 months). (C) 2008 Elsevier Ltd. All rights reserved.
引用
收藏
页码:1310 / 1320
页数:11
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