Preprints
https://doi.org/10.5194/bg-2018-279
https://doi.org/10.5194/bg-2018-279
14 Jun 2018
 | 14 Jun 2018
Status: this preprint was under review for the journal BG but the revision was not accepted.

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

Ramiro Ramos and Silvia Pajares

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
 
Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version Supplement - Supplement
 
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.
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