The fate of fixed nitrogen in marine sediments with low organic loading: an in situ study

Bonaglia, Stefano; Hylén, Astrid; Rattray, Jayne E.; Kononets, Mikhail Y.; Ekeroth, Nils; Roos, Per; Thamdrup, Bo; Brüchert, Volker; Hall, Per O. J.

doi:https://doi.org/10.5194/bg-14-285-2017

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.

https://doi.org/10.5194/bg-14-285-2017

© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 14, issue 2

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, Astrid Hylén, Jayne E. Rattray, Mikhail Y. Kononets, Nils Ekeroth, Per Roos, Bo Thamdrup, Volker Brüchert, and Per O. J. Hall

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Final revised paper (published on 19 Jan 2017)
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Preprint (discussion started on 19 Aug 2016)
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Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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- Supplement

RC1: 'Review of Bonaglia et al. manuscript', Anonymous Referee #1, 12 Oct 2016
- AC1: 'Response to Referee #1', Stefano Bonaglia, 12 Dec 2016
RC2: 'Nice nitrogen cycling budget study on low carbon input coastal basin sediments', Anonymous Referee #2, 09 Dec 2016
- AC2: 'Response to Referee #2', Stefano Bonaglia, 12 Dec 2016

Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision

ED: Publish subject to minor revisions (Editor review) (12 Dec 2016) by Jack Middelburg

AR by Stefano Bonaglia on behalf of the Authors (21 Dec 2016) Author's response Manuscript

ED: Publish subject to technical corrections (27 Dec 2016) by Jack Middelburg

AR by Stefano Bonaglia on behalf of the Authors (31 Dec 2016) Manuscript

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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.