Dynamics of N<sub>2</sub> fixation and fate of diazotroph-derived nitrogen in a  low-nutrient, low-chlorophyll ecosystem: results from the VAHINE mesocosm  experiment (New Caledonia)

Bonnet, Sophie; Berthelot, Hugo; Turk-Kubo, Kendra; Fawcett, Sarah; Rahav, Eyal; L'Helguen, Stéphane; Berman-Frank, Ilana

doi:https://doi.org/10.5194/bg-13-2653-2016

Articles | Volume 13, issue 9

https://doi.org/10.5194/bg-13-2653-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Special issue:

Biogeochemical and biological response to a diazotroph bloom...

https://doi.org/10.5194/bg-13-2653-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 13, issue 9

Research article

|

04 May 2016

Research article |

| 04 May 2016

Dynamics of N₂ fixation and fate of diazotroph-derived nitrogen in a low-nutrient, low-chlorophyll ecosystem: results from the VAHINE mesocosm experiment (New Caledonia)

Sophie Bonnet, Hugo Berthelot, Kendra Turk-Kubo, Sarah Fawcett, Eyal Rahav, Stéphane L'Helguen, and Ilana Berman-Frank

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Final revised paper (published on 04 May 2016)
Preprint (discussion started on 10 Dec 2015)

Interactive discussion

Status: closed

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

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- Supplement

RC C9449: 'Dynamics of N2 fixation and fate of diazotroph-derived nitrogen in a Low Nutrient Low Chlorophyll ecosystem: results from the VAHINE mesocosm experiment (New Caledonia)', Anonymous Referee #1, 29 Jan 2016
- AC C10014: 'Author’s detailed response', Sophie Bonnet, 01 Mar 2016
RC C9813: 'Review of: Dynamics of N2 fixation and fate of diazotroph-derived nitrogen in a Low Nutrient Low Chlorophyll ecosystem: results from the VAHINE mesocosm experiment (New Caledonia)', Anonymous Referee #2, 17 Feb 2016
- AC C10023: 'Author’s detailed response', Sophie Bonnet, 01 Mar 2016
RC C9828: 'Review of the manuscript Biogeosciences Discuss., 12, 19579–19626, 2015', Anonymous Referee #3, 18 Feb 2016
- AC C10033: 'Author’s detailed response', Sophie Bonnet, 01 Mar 2016

Peer-review completion

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

ED: Publish subject to minor revisions (Editor review) (09 Mar 2016) by François Lacan

AR by Sophie Bonnet on behalf of the Authors (10 Mar 2016)

ED: Publish as is (10 Mar 2016) by François Lacan

AR by Sophie Bonnet on behalf of the Authors (16 Mar 2016)

Short summary

N₂ fixation rates were measured daily in ~ 50 m³ mesocosms deployed in New Caledonia to investigate the high-frequency dynamics of diazotrophy and the fate of diazotroph-derived nitrogen (DDN) oligotrophic ecosystems. ~ 10 % of UCYN-C from the water column were exported daily to the traps, representing as much as 22.4 ± 5.5 % of the total POC exported at the height of the UCYN-C bloom. 16 ± 6 % of the DDN was released to the dissolved pool and 21 ± 4 % was transferred to non-diazotrophic plankton.

Dynamics of N2 fixation and fate of diazotroph-derived nitrogen in a low-nutrient, low-chlorophyll ecosystem: results from the VAHINE mesocosm experiment (New Caledonia)

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Interactive discussion

Peer-review completion

Dynamics of N₂ fixation and fate of diazotroph-derived nitrogen in a low-nutrient, low-chlorophyll ecosystem: results from the VAHINE mesocosm experiment (New Caledonia)