Regulation of nitrous oxide production in low-oxygen waters off the coast of Peru

Frey, Claudia; Bange, Hermann W.; Achterberg, Eric P.; Jayakumar, Amal; Löscher, Carolin R.; Arévalo-Martínez, Damian L.; León-Palmero, Elizabeth; Sun, Mingshuang; Sun, Xin; Xie, Ruifang C.; Oleynik, Sergey; Ward, Bess B.

doi:https://doi.org/10.5194/bg-17-2263-2020

Articles | Volume 17, issue 8

https://doi.org/10.5194/bg-17-2263-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue:

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

https://doi.org/10.5194/bg-17-2263-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 17, issue 8

Research article

|

22 Apr 2020

Research article |

| 22 Apr 2020

Regulation of nitrous oxide production in low-oxygen waters off the coast of Peru

Claudia Frey, Hermann W. Bange, Eric P. Achterberg, Amal Jayakumar, Carolin R. Löscher, Damian L. Arévalo-Martínez, Elizabeth León-Palmero, Mingshuang Sun, Xin Sun, Ruifang C. Xie, Sergey Oleynik, and Bess B. Ward

Supplement

https://doi.org/10.5194/bg-17-2263-2020-supplement

Data sets

Gene Expression Omnibus NCBI http://www.ncbi.nlm.nih.gov/geo/

Counting the ocean's greenhouse gas emissions (https://memento.geomar.de/de/n2o) A. Kock and H. W. Bange https://doi.org/10.1029/2015EO023665

Nitrous oxide production rates in the eastern tropical South Pacific during METEOR cruise M138 Claudia Frey, Hermann Werner Bange, Eric Pieter Achterberg, Amal Jayakumar, Carolin R. Löscher, Damian L. Arévalo-Martínez, Elizabeth León-Palmero, Mingshuang Sun, Xin Sun, Ruifang C. Xie, Sergey Oleynik, and Bess B. Ward https://doi.org/10.1594/PANGAEA.914948

Download

Article (4102 KB)
Full-text XML

Short summary

The production of N₂O via nitrification and denitrification associated with low-O₂ waters is a major source of oceanic N₂O. We investigated the regulation and dynamics of these processes with respect to O₂ and organic matter inputs. The transcription of the key nitrification gene amoA rapidly responded to changes in O₂ and strongly correlated with N₂O production rates. N₂O production by denitrification was clearly stimulated by organic carbon, implying that its supply controls N₂O production.