Ocean acidification affects iron speciation during a coastal seawater mesocosm experiment.

Breitbarth, E., Bellerby, R. J., Neill, C. C., Ardelan, M. V., Meyerhöfer, Michael, Zöllner, Eckart, Croot, Peter and Riebesell, Ulf (2010) Ocean acidification affects iron speciation during a coastal seawater mesocosm experiment. Open Access Biogeosciences (BG), 7 (3). pp. 1065-1073. DOI 10.5194/bg-7-1065-2010.

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Abstract

Rising atmospheric CO2 is acidifying the surface ocean, a process which is expected to greatly influence the chemistry and biology of the future ocean. Following the development of iron-replete phytoplankton blooms in a coastal mesocosm experiment at 350, 700, and 1050 μatm pCO2, we observed significant increases in dissolved iron concentrations, Fe(II) concentrations, and Fe(II) half-life times during and after the peak of blooms in response to CO2 enrichment and concomitant lowering of pH, suggesting increased iron bioavailability. If applicable to the open ocean this may provide a negative feedback mechanism to the rising atmospheric CO2 by stimulating marine primary production.

Document Type: Article
Keywords: Marine Biology; Biogeochemistry; ocean acidification
Research affiliation: OceanRep > GEOMAR > FB2 Marine Biogeochemistry > FB2-BI Biological Oceanography
OceanRep > GEOMAR > FB2 Marine Biogeochemistry > FB2-CH Chemical Oceanography
OceanRep > The Future Ocean - Cluster of Excellence
Refereed: Yes
Open Access Journal?: Yes
DOI etc.: 10.5194/bg-7-1065-2010
ISSN: 1726-4170
Projects: Future Ocean
Date Deposited: 29 Nov 2010 11:55
Last Modified: 06 Jul 2012 15:00
URI: http://oceanrep.geomar.de/id/eprint/10202

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