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Title:
Impact of elevated CO2 on shellfish calcification
Authors:
Gazeau, Frédéric; Quiblier, Christophe; Jansen, Jeroen M.; Gattuso, Jean-Pierre; Middelburg, Jack J.; Heip, Carlo H. R.
Affiliation:
AA(Centre for Estuarine and Marine Ecology, Netherlands Institute of Ecology, Yerseke, Netherlands), AB(Centre for Estuarine and Marine Ecology, Netherlands Institute of Ecology, Yerseke, Netherlands), AC(Centre for Estuarine and Marine Ecology, Netherlands Institute of Ecology, Yerseke, Netherlands), AD(Laboratoire d'Océanographie de Villefranche, Université Pierre et Marie Curie, Paris VI, Villefranche-sur-Mer, France), AE(Centre for Estuarine and Marine Ecology, Netherlands Institute of Ecology, Yerseke, Netherlands), AF(Centre for Estuarine and Marine Ecology, Netherlands Institute of Ecology, Yerseke, Netherlands)
Publication:
Geophysical Research Letters, Volume 34, Issue 7, CiteID L07603 (GeoRL Homepage)
Publication Date:
04/2007
Origin:
AGU
Keywords:
Biogeosciences: Benthic processes (4804), Oceanography: Biological and Chemical: Carbon cycling (0428), Oceanography: Biological and Chemical: Geochemistry, Oceanography: Biological and Chemical: Marine inorganic chemistry (1050)
DOI:
10.1029/2006GL028554
Bibliographic Code:
2007GeoRL..34.7603G

Abstract

Ocean acidification resulting from human emissions of carbon dioxide has already lowered and will further lower surface ocean pH. The consequent decrease in calcium carbonate saturation potentially threatens calcareous marine organisms. Here, we demonstrate that the calcification rates of the edible mussel (Mytilus edulis) and Pacific oyster (Crassostrea gigas) decline linearly with increasing pCO2. Mussel and oyster calcification may decrease by 25 and 10%, respectively, by the end of the century, following the IPCC IS92a scenario (~740 ppmv in 2100). Moreover, mussels dissolve at pCO2 values exceeding a threshold value of ~1800 ppmv. As these two species are important ecosystem engineers in coastal ecosystems and represent a large part of worldwide aquaculture production, the predicted decrease of calcification in response to ocean acidification will probably have an impact on coastal biodiversity and ecosystem functioning as well as potentially lead to significant economic loss.
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