Unexpected consequences of increasing CO2 and ocean acidity on marine production of DMS and CH2ClI: Potential climate impacts.

Wingenter, O. W., Haase, K. B., Zeigler, M., Blake, D. R., Rowland, F. Sh., Sive, B. C., Paulino, A. I., Rhyrhaug, R., Larsen, A., Schulz, Kai, Meyerhöfer, Michael and Riebesell, Ulf (2007) Unexpected consequences of increasing CO2 and ocean acidity on marine production of DMS and CH2ClI: Potential climate impacts. Open Access Geophysical Research Letters, 34 (L05710). DOI 10.1029/2006GL028139.

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Abstract

Increasing atmospheric mixing ratios of CO2 have already lowered surface ocean pH by 0.1 units compared to preindustrial values and pH is expected to decrease an additional 0.3 units by the end of this century. Pronounced physiological changes in some phytoplankton have been observed during previous CO2 perturbation experiments. Marine microorganisms are known to consume and produce climate-relevant organic gases. Concentrations of (CH3)2S (DMS) and CH2ClI were quantified during the Third Pelagic Ecosystem CO2 Enrichment Study. Positive feedbacks were observed between control mesocosms and those simulating future CO2. Dimethyl sulfide was 26% (±10%) greater than the controls in the 2x ambient CO2 treatments, and 18% (±10%) higher in the 3xCO2 mesocosms. For CH2ClI the 2xCO2 treatments were 46% (±4%) greater than the controls and the 3xCO2 mesocosms were 131% (±11%) higher. These processes may help contribute to the homeostasis of the planet.

Document Type: Article
Research affiliation: OceanRep > The Future Ocean - Cluster of Excellence
OceanRep > GEOMAR > FB2 Marine Biogeochemistry > FB2-BI Biological Oceanography
Refereed: Yes
Open Access Journal?: No
DOI etc.: 10.1029/2006GL028139
ISSN: 0094-8276
Projects: Future Ocean
Date Deposited: 03 Dec 2008 16:51
Last Modified: 15 Feb 2018 10:10
URI: http://oceanrep.geomar.de/id/eprint/5437

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