Articles | Volume 14, issue 2
https://doi.org/10.5194/bg-14-285-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/bg-14-285-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
Research article
| 
19 Jan 2017
Research article |
| 19 Jan 2017
The fate of fixed nitrogen in marine sediments with low organic loading: an in situ study
Stefano Bonaglia
CORRESPONDING AUTHOR
Department of Geological Sciences and Bolin Centre for Climate
Research, Stockholm University, Stockholm, Sweden
current address:
Department of Geology, Lund University, Lund, Sweden
Astrid Hylén
Department of Marine Sciences, University of Gothenburg, Gothenburg,
Sweden
Jayne E. Rattray
Department of Geological Sciences and Bolin Centre for Climate
Research, Stockholm University, Stockholm, Sweden
Mikhail Y. Kononets
Department of Marine Sciences, University of Gothenburg, Gothenburg,
Sweden
Nils Ekeroth
Department of Marine Sciences, University of Gothenburg, Gothenburg,
Sweden
Calluna AB, Nacka, Sweden
Per Roos
Center for Nuclear Technologies, Technical University of Denmark,
Roskilde, Denmark
Bo Thamdrup
Department of Biology and Nordic Center for Earth Evolution,
University of Southern Denmark, Odense M, Denmark
Volker Brüchert
Department of Geological Sciences and Bolin Centre for Climate
Research, Stockholm University, Stockholm, Sweden
Per O. J. Hall
Department of Marine Sciences, University of Gothenburg, Gothenburg,
Sweden
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- Application of the isotope pairing technique in sediments: Use, challenges, and new directions E. Robertson et al. 10.1002/lom3.10303
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- The need for proactive environmental management of offshore aquaculture M. Simone & K. Vopel 10.1111/raq.12874
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Discussed (preprint)
Latest update: 15 Jun 2025
Short summary
Understanding nitrogen (N) cycling mechanisms in the ocean is crucial for improving ecosystem management. Here we study N processes by in situ lander and isotope tracer techniques in – so far overlooked – sediments with low organic loads. Denitrification and anammox are the main N transformation processes. However, we demonstrate high contribution of dissimilatory nitrate reduction to ammonium, which recycles a major portion of fixed N to the water column and sustains primary production.
Understanding nitrogen (N) cycling mechanisms in the ocean is crucial for improving ecosystem...
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