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Volume 12, issue 24
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.

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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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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