Carbon and nitrogen turnover in the Arctic deep sea: in situ benthic community response to diatom and coccolithophorid phytodetritus

Braeckman, Ulrike; Janssen, Felix; Lavik, Gaute; Elvert, Marcus; Marchant, Hannah; Buckner, Caroline; Bienhold, Christina; Wenzhöfer, Frank

doi:https://doi.org/10.5194/bg-15-6537-2018

Articles | Volume 15, issue 21

https://doi.org/10.5194/bg-15-6537-2018

© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/bg-15-6537-2018

© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 15, issue 21

Research article

|

07 Nov 2018

Research article |

| 07 Nov 2018

Carbon and nitrogen turnover in the Arctic deep sea: in situ benthic community response to diatom and coccolithophorid phytodetritus

Ulrike Braeckman, Felix Janssen, Gaute Lavik, Marcus Elvert, Hannah Marchant, Caroline Buckner, Christina Bienhold, and Frank Wenzhöfer

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Final revised paper (published on 07 Nov 2018)
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Preprint (discussion started on 21 Aug 2018)
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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 Braeckman et al on C, N deliberate tracer study in Arctic deep sea', Jack Middelburg, 21 Aug 2018
- AC1: 'Reply to Review JMiddelburg.pdf', Ulrike Braeckman, 07 Sep 2018
RC2: 'comments to bg-2018-264', Anonymous Referee #2, 12 Oct 2018
- AC2: 'Reply to Anonymous Review', Ulrike Braeckman, 16 Oct 2018

Peer-review completion

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

ED: Publish subject to minor revisions (review by editor) (17 Oct 2018) by Hiroshi Kitazato

AR by Ulrike Braeckman on behalf of the Authors (17 Oct 2018) Author's response Manuscript

ED: Publish as is (22 Oct 2018) by Hiroshi Kitazato

AR by Ulrike Braeckman on behalf of the Authors (23 Oct 2018)

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Short summary

Global warming has altered Arctic phytoplankton communities, with unknown effects on deep-sea communities that depend strongly on food produced at the surface. We compared the responses of Arctic deep-sea benthos to input of phytodetritus from diatoms and coccolithophorids. Coccolithophorid carbon was 5× less recycled than diatom carbon. The utilization of the coccolithophorid carbon may be less efficient, so a shift from diatom to coccolithophorid blooms could entail a delay in carbon cycling.