Articles | Volume 13, issue 21
Biogeosciences, 13, 6049–6066, 2016
https://doi.org/10.5194/bg-13-6049-2016
Biogeosciences, 13, 6049–6066, 2016
https://doi.org/10.5194/bg-13-6049-2016

Research article 03 Nov 2016

Research article | 03 Nov 2016

Unveiling the Si cycle using isotopes in an iron-fertilized zone of the Southern Ocean: from mixed-layer supply to export

Ivia Closset et al.

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AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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AR: Author's response | RR: Referee report | ED: Editor decision
ED: Reconsider after major revisions (18 Aug 2016) by Clare Woulds
AR by Ivia Closset on behalf of the Authors (28 Aug 2016)  Author's response    Manuscript
ED: Publish subject to minor revisions (Editor review) (11 Sep 2016) by Clare Woulds
AR by Ivia Closset on behalf of the Authors (14 Sep 2016)  Author's response    Manuscript
ED: Publish as is (28 Sep 2016) by Clare Woulds
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Short summary
Isotopic measurements were used to investigate the seasonal evolution of the silicon (Si) biogeochemical cycle in a naturally iron-fertilized area of the Southern Ocean. When comparing data from early spring and summer periods, the relationship between Si depletion, biogenic silica production, and their isotopic composition appears decoupled in this region. Considering these results, we refined the seasonal net Si production that was mainly sustained by surface phytoplankton populations.
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