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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Cited articles

Abrajevitch, A., Roberts, A. P., and Kodama, K.: Volcanic iron fertilization of primary productivity at Kerguelen Plateau, Southern Ocean, through the Middle Miocene Climate Transition, Palaeogeogr. Palaeoclimatol. Palaeoecol., 410, 1–13, 2014.
Assmy, P., et al.: Thick-shelled, grazer-protected diatoms decouple ocean carbon and silicon cycles in the iron-limited Antarctic Circumpolar Current, Proc. Natl. Acad. Sci. USA, 110, 20633–20638, 2013.
Baker, A. R., Jickells, T. D., Witt, M., and Linge, K. L.: Trends in the solubility of iron, aluminium, manganese and phosphorus in aerosol collected over the Atlantic Ocean, Mar. Chem., 98, 43–58, 2006.
Bhattachan, A., D'Odorico, P., Baddock, M. C., Zobeck, T. M., Okin, G. S., and Cassar, N.: The Southern Kalahari: A potential new dust source in the Southern Hemisphere?, Environ. Res. Lett., 7, 1–7, 2012.
Bishop, J. K. B., Lam, P. J., and Wood T. J.: Getting good particles: Accurate sampling of particles by large volume in-situ filtration, Limnol. Oceanogr., 10, 681–710, 2012.
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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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