Articles | Volume 13, issue 10
https://doi.org/10.5194/bg-13-2889-2016
https://doi.org/10.5194/bg-13-2889-2016
Research article
 | 
18 May 2016
Research article |  | 18 May 2016

N2 fixation in eddies of the eastern tropical South Pacific Ocean

Carolin R. Löscher, Annie Bourbonnais, Julien Dekaezemacker, Chawalit N. Charoenpong, Mark A. Altabet, Hermann W. Bange, Rena Czeschel, Chris Hoffmann, and Ruth Schmitz

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Short summary
The ocean is full of eddies and they play a key role for ocean biogeochemistry. In order to understand dinitrogen (N2) fixation, one major control of oceanic primary production, we investigated three eddies in the eastern tropical South Pacific off Peru. We conducted the first detailed survey and found increased N2 fixation in the oxygen-depleted cores of anticyclonic mode water eddies. Taken together, we could – for the first time – show that eddies play an important role in N2 fixation off Peru.
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