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BG | Articles | Volume 17, issue 4
Biogeosciences, 17, 851–864, 2020
https://doi.org/10.5194/bg-17-851-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue: Ocean deoxygenation: drivers and consequences – past, present...

Biogeosciences, 17, 851–864, 2020
https://doi.org/10.5194/bg-17-851-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 18 Feb 2020

Research article | 18 Feb 2020

No nitrogen fixation in the Bay of Bengal?

Carolin R. Löscher et al.

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Cited articles

Andersson, B., Sundbäck, K., Hellman, M., Hallin, S., and Alsterberg, C.: Nitrogen fixation in shallow-water sediments: Spatial distribution and controlling factors, Limnol. Oceanogr., 59, 1932–1944, 2014. 
Angel, R., Nepel, M., Panhölzl, C., Schmidt, H., Herbold, C. W., Eichorst, S. A., and Woebken, D.: Evaluation of Primers Targeting the Diazotroph Functional Gene and Development of NifMAP – A Bioinformatics Pipeline for Analyzing nifH Amplicon Data, Front. Microbiol., 9, 703–703, https://doi.org/10.3389/fmicb.2018.00703, 2018. 
Benitez-Nelson, C.: The biogeochemical cycling of phosphorus in marine systems, 109–135 pp., 2000. 
Bertics, V. J., Löscher, C. R., Salonen, I., Dale, A. W., Gier, J., Schmitz, R. A., and Treude, T.: Occurrence of benthic microbial nitrogen fixation coupled to sulfate reduction in the seasonally hypoxic Eckernförde Bay, Baltic Sea, Biogeosciences, 10, 1243–1258, https://doi.org/10.5194/bg-10-1243-2013, 2013. 
Bhaskar, J., Nagappa, R., Gauns, M., and Fernandes, V.: Preponderance of a few diatom species among the highly diverse microphytoplankton assemblages in the Bay of Bengal, 63–75 pp., 2007. 
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Oxygen minimum zones (OMZs) are ocean areas severely depleted in oxygen as a result of physical, chemical, and biological processes. Biologically, organic material is produced in the sea surface and exported to deeper waters, where it respires. In the Bay of Bengal (BoB), an OMZ is present, but there are traces of oxygen left. Our study now suggests that this is because one key process, nitrogen fixation, is absent in the BoB, thus preventing primary production and consecutive respiration.
Oxygen minimum zones (OMZs) are ocean areas severely depleted in oxygen as a result of physical,...
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