Volume 12, issue 24 | Copyright

Special issue: Hydrography, biogeochemistry, and biology of "dead-zone eddies"...

Biogeosciences, 12, 7467-7482, 2015
https://doi.org/10.5194/bg-12-7467-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 21 Dec 2015

Research article | 21 Dec 2015

Hidden biosphere in an oxygen-deficient Atlantic open-ocean eddy: future implications of ocean deoxygenation on primary production in the eastern tropical North Atlantic

C. R. Löscher et al.
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Cited articles
Ahlgren, N., Rocap, G., and Chisholm, S.: Measurement of Prochlorococcus ecotypes using real-time polymerase chain reaction reveals different abundances of genotypes with similar light physiologies, Environ. Microbiol., 8, 441–454, 2006.
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.
Angel, R., Matthies, D., and Conrad, R.: Activation of Methanogenesis in Arid Biological Soil Crusts Despite the Presence of Oxygen, PlosOne, 6, e20453, https://doi.org/10.1371/journal.pone.0020453, 2011.
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 Discuss., 12, 9243–9273, https://doi.org/10.5194/bgd-12-9243-2015, 2015.
Baird, M. E., Suthers, I. M., Griffin, D. A., Hollings, B., Pattiaratchi, C., Everett, J. D., Roughan, M., Oubelkheir, K., and Doblin, M.: The effect of surface flooding on the physical-biogeochemical dynamics of a warm-core eddy off southeast Australia, Deep-Sea Res. Pt. II, 58, 592–605, 2011.
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The waters of the tropical Atlantic Open Ocean usually contain comparably high concentrations of oxygen. Now, it became clear that there are watermasses related to eddies that are nearly anoxic. We surveyed one of those eddies and found a biosphere that largely differed from the usual biosphere present in this area with a specific community responsible for primary production and for degradation processes. Further, we found the very first indication for active nitrogen loss in the open Atlantic.
The waters of the tropical Atlantic Open Ocean usually contain comparably high concentrations of...
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