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Biogeosciences An interactive open-access journal of the European Geosciences Union
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Volume 13, issue 10
Biogeosciences, 13, 2889–2899, 2016
https://doi.org/10.5194/bg-13-2889-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Special issue: Biogeochemical processes, tropospheric chemistry and interactions...

Biogeosciences, 13, 2889–2899, 2016
https://doi.org/10.5194/bg-13-2889-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 18 May 2016

Research article | 18 May 2016

N2 fixation in eddies of the eastern tropical South Pacific Ocean

Carolin R. Löscher et al.
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Altabet, M. A., Ryabenko, E., Stramma, L., Wallace, D. W. R., Frank, M., Grasse, P., and Lavik, G.: An eddy-stimulated hotspot for fixed nitrogen-loss from the Peru oxygen minimum zone, Biogeosciences, 9, 4897–4908, https://doi.org/10.5194/bg-9-4897-2012, 2012.
Arévalo-Martínez, D. L., Kock, A., Löscher, C. R., Schmitz, R. A., Stramma, L., and Bange, H. W.: Influence of mesoscale eddies on the distribution of nitrous oxide in the eastern tropical South Pacific, Biogeosciences, 13, 1105–1118, https://doi.org/10.5194/bg-13-1105-2016, 2016.
Babbin, A. R., Keil, R. G., Devol, A. H., and Ward, B. B.: Organic matter stoichiometry, flux, and oxygen control nitrogen loss in the Ocean, Science, 344, 406–408, https://doi.org/10.1126/science.1248364, 2014.
Bange, H. W.: Oxygen measured on water bottle samples during METEOR cruise M91, GEOMAR – Helmholtz Centre for Ocean Research Kiel, https://doi.org/10.1594/PANGAEA.817193, 2013a.
Bange, H. W.: Nutrients measured on water bottle samples during METEOR cruise M91, GEOMAR – Helmholtz Centre for Ocean Research Kiel, https://doi.org/10.1594/PANGAEA.817174, 2013b.
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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.
The ocean is full of eddies and they play a key role for ocean biogeochemistry. In order to...
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