Articles | Volume 18, issue 1
https://doi.org/10.5194/bg-18-327-2021
https://doi.org/10.5194/bg-18-327-2021
Research article
 | 
15 Jan 2021
Research article |  | 15 Jan 2021

Denitrification by benthic foraminifera and their contribution to N-loss from a fjord environment

Constance Choquel, Emmanuelle Geslin, Edouard Metzger, Helena L. Filipsson, Nils Risgaard-Petersen, Patrick Launeau, Manuel Giraud, Thierry Jauffrais, Bruno Jesus, and Aurélia Mouret

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AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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AR: Author's response | RR: Referee report | ED: Editor decision
ED: Publish subject to minor revisions (review by editor) (21 Oct 2020) by Tina Treude
AR by Constance Choquel on behalf of the Authors (22 Oct 2020)  Author's response   Manuscript 
ED: Publish subject to minor revisions (review by editor) (30 Oct 2020) by Tina Treude
AR by Constance Choquel on behalf of the Authors (13 Nov 2020)  Author's response   Manuscript 
ED: Publish as is (01 Dec 2020) by Tina Treude
AR by Constance Choquel on behalf of the Authors (02 Dec 2020)  Manuscript 
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Short summary
Marine microorganisms such as foraminifera are able to live temporarily without oxygen in sediments. In a Swedish fjord subjected to seasonal oxygen scarcity, a change in fauna linked to the decrease in oxygen and the increase in an invasive species was shown. The invasive species respire nitrate until 100 % of the nitrate porewater in the sediment and could be a major contributor to nitrogen balance in oxic coastal ecosystems. But prolonged hypoxia creates unfavorable conditions to survive.
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