Articles | Volume 13, issue 13
Biogeosciences, 13, 3887–3900, 2016
https://doi.org/10.5194/bg-13-3887-2016
Biogeosciences, 13, 3887–3900, 2016
https://doi.org/10.5194/bg-13-3887-2016

Research article 06 Jul 2016

Research article | 06 Jul 2016

Potentially bioavailable iron delivery by iceberg-hosted sediments and atmospheric dust to the polar oceans

Robert Raiswell et al.

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Status: closed
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: Publish subject to minor revisions (Editor review) (28 May 2016) by Caroline P. Slomp
AR by Robert Raiswell on behalf of the Authors (05 Jun 2016)  Author's response    Manuscript
ED: Publish as is (17 Jun 2016) by Caroline P. Slomp
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Short summary
Iron is an essential nutrient for plankton growth. One important source of iron is wind-blown dust. The polar oceans are remote from dust sources but melting icebergs supply sediment that contains iron which is potentially available to plankton. We show that iceberg sediments contain more potentially bioavailable iron than wind-blown dust. Iceberg sources will become increasingly important with climate change and increased plankton growth can remove more carbon dioxide from the atmosphere.
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