Contribution and pathways of diazotroph-derived nitrogen to zooplankton  during the VAHINE mesocosm experiment in the oligotrophic New Caledonia  lagoon

Hunt, Brian P. V.; Bonnet, Sophie; Berthelot, Hugo; Conroy, Brandon J.; Foster, Rachel A.; Pagano, Marc

doi:https://doi.org/10.5194/bg-13-3131-2016

Articles | Volume 13, issue 10

https://doi.org/10.5194/bg-13-3131-2016

© 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-13-3131-2016

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

Articles | Volume 13, issue 10

Research article

|

31 May 2016

Research article |

| 31 May 2016

Contribution and pathways of diazotroph-derived nitrogen to zooplankton during the VAHINE mesocosm experiment in the oligotrophic New Caledonia lagoon

Brian P. V. Hunt, Sophie Bonnet, Hugo Berthelot, Brandon J. Conroy, Rachel A. Foster, and Marc Pagano

Download

Final revised paper (published on 31 May 2016)
Preprint (discussion started on 18 Jan 2016)

Interactive discussion

Status: closed

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

- Printer-friendly version

- Supplement

RC1: 'Review of the manuscript Biogeosciences Discuss., bg-2015-614', Anonymous Referee #1, 18 Feb 2016
- AC1: 'Response to Referee 1', Brian Hunt, 19 Apr 2016
RC2: 'Referee Comment for bg-2015-614', Anonymous Referee #2, 22 Feb 2016
- AC2: 'Response to Referee 2', Brian Hunt, 19 Apr 2016

Peer-review completion

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

ED: Publish subject to minor revisions (Editor review) (19 Apr 2016) by Emilio Marañón

AR by Brian Hunt on behalf of the Authors (30 Apr 2016) Author's response Manuscript

ED: Publish as is (03 May 2016) by Emilio Marañón

AR by Brian Hunt on behalf of the Authors (09 May 2016)

Short summary

Biological nitrogen (N) fixation is an important source of N for food webs in tropical and subtropical oceans. However, uptake pathways remain poorly understood. This study found that fixed N contributed a third of total zooplankton N in the New Caledonia lagoon. Fixed N reached the zooplankton through 1) direct grazing on N fixers and 2) grazing on phytoplankton that had taken up N released by fixers. We report the first record of direct zooplankton grazing on the unicellular N fixer UCYN-C.