Articles | Volume 17, issue 5
https://doi.org/10.5194/bg-17-1327-2020
https://doi.org/10.5194/bg-17-1327-2020
Research article
 | 
16 Mar 2020
Research article |  | 16 Mar 2020

Fe(II) stability in coastal seawater during experiments in Patagonia, Svalbard, and Gran Canaria

Mark J. Hopwood, Carolina Santana-González, Julian Gallego-Urrea, Nicolas Sanchez, Eric P. Achterberg, Murat V. Ardelan, Martha Gledhill, Melchor González-Dávila, Linn Hoffmann, Øystein Leiknes, Juana Magdalena Santana-Casiano, Tatiana M. Tsagaraki, and David Turner

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AR: Author's response | RR: Referee report | ED: Editor decision
ED: Reconsider after major revisions (22 Jan 2019) by Caroline P. Slomp
AR by Mark Hopwood on behalf of the Authors (21 Feb 2019)  Author's response   Manuscript 
ED: Referee Nomination & Report Request started (08 Mar 2019) by Marilaure Grégoire
RR by Loes Gerringa (20 Mar 2019)
ED: Publish subject to minor revisions (review by editor) (05 Apr 2019) by Marilaure Grégoire
AR by Mark Hopwood on behalf of the Authors (18 Apr 2019)  Manuscript 
ED: Publish subject to technical corrections (08 May 2019) by Marilaure Grégoire
AR by Mark Hopwood on behalf of the Authors (20 May 2019)  Manuscript 
Short summary
Fe is an essential micronutrient. Fe(III)-organic species are thought to account for > 99 % of dissolved Fe in seawater. Here we quantified Fe(II) during experiments in Svalbard, Gran Canaria, and Patagonia. Fe(II) was always a measurable fraction of dissolved Fe up to 65 %. Furthermore, when Fe(II) was allowed to decay in the dark, it remained present longer than predicted by kinetic equations, suggesting that Fe(II) is a more important fraction of dissolved Fe in seawater than widely recognized.
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