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Biogeosciences An interactive open-access journal of the European Geosciences Union
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Discussion papers
https://doi.org/10.5194/bg-2018-279
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-2018-279
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Submitted as: reviews and syntheses 14 Jun 2018

Submitted as: reviews and syntheses | 14 Jun 2018

Review status
This discussion paper is a preprint. It has been under review for the journal Biogeosciences (BG). The revised manuscript was not accepted.

Reviews and syntheses: Processes and functional genes involved in nitrogen cycling in marine environments

Ramiro Ramos1,2 and Silvia Pajares2 Ramiro Ramos and Silvia Pajares
  • 1Posgrado en Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México, Mexico City, 045110, Mexico
  • 2Unidad Académica de Ecología y Biodiversidad Acuática, Instituto de Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México, Mexico City, 045110, Mexico

Abstract. Nitrogen is a key element for life in the oceans. It controls primary productivity in many parts of the global ocean, consequently playing a crucial role in the uptake of atmospheric carbon dioxide. The nitrogen cycle is driven by complex biogeochemical transformations mediated by microorganisms, including classical processes such as nitrogen fixation, assimilation, nitrification, denitrification, and dissimilarity nitrate reduction to ammonia, as well as novel processes such as anaerobic ammonium oxidation, comammox and nitrite-driven anaerobic methane oxidation. The nitrogen cycle maintains the functioning of marine ecosystems and will be a crucial component in how the ocean responds to global environmental change. In this review, we summarize the current understanding of the marine microbial nitrogen cycle, its underlying biochemical and enzymatic reactions, the ecology and distribution of the microorganisms involved, and the main impacts of anthropogenic activities.

Ramiro Ramos and Silvia Pajares
Interactive discussion
Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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Interactive discussion
Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version Supplement - Supplement
Ramiro Ramos and Silvia Pajares
Ramiro Ramos and Silvia Pajares
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Short summary
The nitrogen cycle maintains the functioning of marine ecosystems and will be a crucial component in how the ocean responds to global environmental change. In this review, we summarize the current understanding of the marine microbial nitrogen cycle, its underlying biochemical and enzymatic reactions, the ecology and distribution of participating microorganisms in different marine ecosystems, and the main impacts of anthropogenic activities on the marine N cycle.
The nitrogen cycle maintains the functioning of marine ecosystems and will be a crucial...
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