Articles | Volume 18, issue 1
https://doi.org/10.5194/bg-18-327-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-18-327-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
15 Jan 2021
Research article |
| 15 Jan 2021
| 15 Jan 2021
Denitrification by benthic foraminifera and their contribution to N-loss from a fjord environment
Constance Choquel
CORRESPONDING AUTHOR
UMR 6112 LPG BIAF, Univ. Angers, Univ. Nantes, CNRS, Angers, France
Emmanuelle Geslin
CORRESPONDING AUTHOR
UMR 6112 LPG BIAF, Univ. Angers, Univ. Nantes, CNRS, Angers, France
Edouard Metzger
UMR 6112 LPG BIAF, Univ. Angers, Univ. Nantes, CNRS, Angers, France
Helena L. Filipsson
Department of Geology, Lund University, Lund, Sweden
Nils Risgaard-Petersen
Department of Biology, Aquatic Biology, Aarhus University, Aarhus, Denmark
Patrick Launeau
UMR 6112 LPG BIAF, Univ. Angers, Univ. Nantes, CNRS, Angers, France
Manuel Giraud
UMR 6112 LPG BIAF, Univ. Angers, Univ. Nantes, CNRS, Angers, France
Thierry Jauffrais
Ifremer, IRD, Univ. Nouvelle-Calédonie, Univ. La Réunion, CNRS, UMR 9220 ENTROPIE, Noumea, New Caledonia
UMR 6112 LPG BIAF, Univ. Angers, Univ. Nantes, CNRS, Angers, France
Bruno Jesus
Université de Nantes, Mer Molécules Santé, EA 2160, Nantes, France
BioISI – Biosystems & Integrative Sciences Institute, Campo Grande, Faculty of Sciences, University of Lisbon, Lisbon, Portugal
Aurélia Mouret
UMR 6112 LPG BIAF, Univ. Angers, Univ. Nantes, CNRS, Angers, France
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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.
Marine microorganisms such as foraminifera are able to live temporarily without oxygen in...
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