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ICES Journal of Marine Science: Journal du Conseil 2008 65(3):414-432; doi:10.1093/icesjms/fsn048
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© 2008 International Council for the Exploration of the Sea. Published by Oxford Journals. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org

Impacts of ocean acidification on marine fauna and ecosystem processes

Victoria J. Fabry1, Brad A. Seibel2, Richard A. Feely3 and James C. Orr4

1 Department of Biological Sciences, California State University San Marcos, San Marcos, CA 92096–0001, USA
2 Department of Biological Sciences, University of Rhode Island, Kingston RI 02881, USA
3 Pacific Marine Environmental Laboratory, NOAA, Seattle, WA 98115–6349, USA
4 Marine Environmental Laboratories, International Atomic Energy Agency, Monaco MC-98000, Monaco

Correspondence to V. J. Fabry: tel: +1 760 7504113; fax: +1 760 7503440; e-mail: fabry{at}csusm.edu

Fabry, V. J., Seibel, B. A., Feely, R. A., and Orr, J. C. 2008. Impacts of ocean acidification on marine fauna and ecosystem processes. – ICES Journal of Marine Science, 65: 414–432.

Oceanic uptake of anthropogenic carbon dioxide (CO2) is altering the seawater chemistry of the world’s oceans with consequences for marine biota. Elevated partial pressure of CO2 (pCO2) is causing the calcium carbonate saturation horizon to shoal in many regions, particularly in high latitudes and regions that intersect with pronounced hypoxic zones. The ability of marine animals, most importantly pteropod molluscs, foraminifera, and some benthic invertebrates, to produce calcareous skeletal structures is directly affected by seawater CO2 chemistry. CO2 influences the physiology of marine organisms as well through acid-base imbalance and reduced oxygen transport capacity. The few studies at relevant pCO2 levels impede our ability to predict future impacts on foodweb dynamics and other ecosystem processes. Here we present new observations, review available data, and identify priorities for future research, based on regions, ecosystems, taxa, and physiological processes believed to be most vulnerable to ocean acidification. We conclude that ocean acidification and the synergistic impacts of other anthropogenic stressors provide great potential for widespread changes to marine ecosystems.

Keywords: anthropogenic CO2, calcification, ecosystem impacts, hypercapnia, ocean acidification, physiological effects, zooplankton

Received 11 July 2007; accepted 14 February 2008.


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