Articles | Volume 12, issue 14
Biogeosciences, 12, 4421–4445, 2015
https://doi.org/10.5194/bg-12-4421-2015

Special issue: KEOPS2: Kerguelen Ocean and Plateau Study 2

Biogeosciences, 12, 4421–4445, 2015
https://doi.org/10.5194/bg-12-4421-2015

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 et al.

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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.
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