Seawater carbonate chemistry, calcification and respiration duirng experiments with a pteropod Creseis acicula, 2010 ...

• Main Authors: Comeau, Steeve, Gattuso, Jean-Pierre, Jeffree, Ross, Gazeau, Frédéric
• Format: Dataset
• Language: English
• Published: PANGAEA 2010
• Subjects: Experimental treatment; Identification; Salinity; Temperature, water; Temperature, standard deviation; Carbonate system computation flag; pH; pH, standard deviation; Alkalinity, total; Alkalinity, total, standard deviation; Carbon, inorganic, dissolved; Carbon, inorganic, dissolved, standard deviation; Partial pressure of carbon dioxide water at sea surface temperature wet air; Carbon dioxide, partial pressure, standard deviation; Fugacity of carbon dioxide water at sea surface temperature wet air; Fugacity of carbon dioxide in seawater, standard deviation; Carbon dioxide; Carbon dioxide, standard deviation; Bicarbonate ion; Bicarbonate ion, standard deviation; Carbonate ion; Carbonate ion, standard deviation; Aragonite saturation state; Aragonite saturation state, standard deviation; Calcite saturation state; Calcite saturation state, standard deviation; Respiration rate, oxygen; Respiration rate, oxygen, standard deviation; Ammonium, excretion; Ammonium, excretion, standard deviation; Calcification rate of calcium carbonate; Calcification rate, standard deviation; Calculated using seacarb after Nisumaa et al. 2010; pH meter Metrohm, 826 pH mobile; Metrohm Titrando titrator; O2-meter OXY-4 mini, PreSens; Calculated; Colorimetric technique Koroleff 1983 and a JenWay 6310 Staffordshire, UK flu; Alkalinity anomaly technique Smith and Key, 1975; **45Ca incorporation; European network of excellence for Ocean Ecosystems Analysis EUR-OCEANS; European Project on Ocean Acidification EPOCA; Ocean acidification
• Online Access: https://dx.doi.org/10.1594/pangaea.754858; https://doi.pangaea.de/10.1594/PANGAEA.754858

Among marine calcifiers, shelled pteropods are expected to be particularly sensitive to ocean acidification, generated by the uptake of anthropogenic CO2 by the ocean, and the associated decrease of the seawater saturation state with respect to aragonite (omega aragonite). The few available studies have mostly focused on polar species although pteropods are also important components of temperate and tropical ecosystems. It is also unknown which parameter of the carbonate system controls calcification. Specimens of the temperate Mediterranean species Creseis acicula were maintained under seven different conditions of the carbonate chemistry, obtained by manipulating pH and total alkalinity, with the goal to disentangle the effects of pH and omega aragonite. Respiration, excretion as well as rates of net and gross calcification were not directly affected by a decrease in pH but decreased significantly with a decrease of omega aragonite. The decrease of gross calcification rates is consistent with that reported ... : 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). ...