Seawater carbonate chemistry and calcification during incubation experiments with Mytilus edulis and Grassostrea gigas, 2006, supplement to: Gazeau, Frédéric; Quiblier, Christophe; Jansen, Jeroen M; Gattuso, Jean-Pierre; Middelburg, Jack J; Heip, Carlo H R (2007): Impact of elevated CO2 on shellfish calcification. Geophysical Research Letters, 34

• Main Authors: Gazeau, Frédéric, Quiblier, Christophe, Jansen, Jeroen M, Gattuso, Jean-Pierre, Middelburg, Jack J, Heip, Carlo H R
• Format: Dataset
• Language: English
• Published: PANGAEA - Data Publisher for Earth & Environmental Science 2007
• Subjects: Animalia; Benthic animals; Benthos; Bottles or small containers/Aquaria <20 L; Brackish waters; Calcification/Dissolution; Crassostrea gigas; Laboratory experiment; Mollusca; Mytilus edulis; North Atlantic; Single species; Temperate; Event label; Carbonate system computation flag; Salinity; Temperature, water; pH; Alkalinity, total; Carbon dioxide; Carbon, inorganic, dissolved; Carbonate ion; Bicarbonate ion; Partial pressure of carbon dioxide water at sea surface temperature wet air; Fugacity of carbon dioxide water at sea surface temperature wet air; Aragonite saturation state; Calcite saturation state; Calcification rate of calcium carbonate; Experiment; Calculated using seacarb after Nisumaa et al. 2010; pH, Electrode; Alkalinity, Gran titration Gran, 1950; Calculated; Alkalinity anomaly technique Smith and Key, 1975; European network of excellence for Ocean Ecosystems Analysis EUR-OCEANS; European Project on Ocean Acidification EPOCA; Ocean Acidification International Coordination Centre OA-ICC; Pacific; Ocean acidification; Pacific oyster
• Online Access: https://dx.doi.org/10.1594/pangaea.718130; https://doi.pangaea.de/10.1594/PANGAEA.718130

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. : In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Lavigne and Gattuso, 2011) was used to compute a complete and consistent set of carbonate system variables, as described by Nisumaa et al. (2010). In this dataset the original values were archived in addition with the recalculated parameters (see related PI).