Iron budgets for three distinct biogeochemical sites around the Kerguelen Archipelago (Southern Ocean) during the natural fertilisation study, KEOPS-2

Bowie, A. R.; van der Merwe, P.; Quéroué, F.; Trull, T.; Fourquez, M.; Planchon, F.; Sarthou, G.; Chever, F.; Townsend, A. T.; Obernosterer, I.; Sallée, J.-B.; Blain, S.

doi:https://doi.org/10.5194/bg-12-4421-2015

Articles | Volume 12, issue 14

https://doi.org/10.5194/bg-12-4421-2015

© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

Special issue:

KEOPS2: Kerguelen Ocean and Plateau Study 2

https://doi.org/10.5194/bg-12-4421-2015

© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 12, issue 14

Research article

|

29 Jul 2015

Research article |

| 29 Jul 2015

Iron budgets for three distinct biogeochemical sites around the Kerguelen Archipelago (Southern Ocean) during the natural fertilisation study, KEOPS-2

A. R. Bowie, P. van der Merwe, F. Quéroué, T. Trull, M. Fourquez, F. Planchon, G. Sarthou, F. Chever, A. T. Townsend, I. Obernosterer, J.-B. Sallée, and S. Blain

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Interactive discussion

Status: closed

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

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RC C8150: 'Review of Bowie et al. bb-2014-581', Anonymous Referee #1, 20 Jan 2015
RC C9160: 'bg-2014-581', Anonymous Referee #2, 18 Mar 2015
AC C9371: 'Response to reviewers on “Iron budgets for three distinct biogeochemical sites around the Kerguelen archipelago (Southern Ocean) during the natural fertilisation experiment KEOPS-2” by A. R. Bowie et al.', Andrew Bowie, 31 May 2015

Peer-review completion

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

AR by Andrew Bowie on behalf of the Authors (22 Jun 2015) Author's response Manuscript

ED: Publish as is (24 Jun 2015) by Bernard Quéguiner

AR by Andrew Bowie on behalf of the Authors (25 Jun 2015)

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Short summary

Iron biogeochemical budgets during the natural ocean fertilisation experiment KEOPS-2 showed that complex circulation and transport pathways were responsible for differences in the mode and strength of iron supply, with vertical supply dominant on the plateau and lateral supply dominant in the plume. The exchange of iron between dissolved, biogenic and lithogenic pools was highly dynamic, resulting in a decoupling of iron supply and carbon export and controlling the efficiency of fertilization.