Seawater carbonate chemistry and Emiliania huxleyi mass and size, 2011 ...

• Main Authors: Beaufort, Luc, Probert, Ian, de Garidel-Thoron, Thibault, Bendif, E M, Ruiz-Pino, Diana, Metzi, N, Goyet, Catherine, Buchet, Noëlle, Coupel, Pierre, Grelaud, Michaël, Rost, Björn, Rickaby, Rosalind E M, De Vargas, Colomban
• Format: Dataset
• Language: English
• Published: PANGAEA 2011
• Subjects: Antarctic; Emiliania huxleyi; Indian Ocean; North Atlantic; North Pacific; Phytoplankton; South Atlantic; South Pacific; Sample ID; LATITUDE; LONGITUDE; Age, dated; Emiliania huxleyi, weight; Emiliania huxleyi, weight, standard error; Emiliania huxleyi, diameter; Replicates; Salinity; Temperature, water; Alkalinity, total; Carbon, inorganic, dissolved; pH; Partial pressure of carbon dioxide water at sea surface temperature wet air; Carbonate ion; Carbonate system computation flag; Carbon dioxide; Fugacity of carbon dioxide water at sea surface temperature wet air; Bicarbonate ion; Aragonite saturation state; Calcite saturation state; Estimated by measuring brightness in cross-polarized light birefringence; Measured and/or detected by SYRACO software; CTD, Sea-Bird SBE 911plus; Titration potentiometric; Calculated using CO2SYS; Calculated using seacarb after Nisumaa et al. 2010; European network of excellence for Ocean Ecosystems Analysis EUR-OCEANS; European Project on Ocean Acidification EPOCA; Ocean Acidification International Coordination Centre OA-ICC; Indian; Pacific; Antarc*; Carbonic acid; Ocean acidification
• Online Access: https://dx.doi.org/10.1594/pangaea.767576; https://doi.pangaea.de/10.1594/PANGAEA.767576

About one-third of the carbon dioxide (CO2) released into the atmosphere as a result of human activity has been absorbed by the oceans, where it partitions into the constituent ions of carbonic acid. This leads to ocean acidification, one of the major threats to marine ecosystems and particularly to calcifying organisms such as corals, foraminifera and coccolithophores. Coccolithophores are abundant phytoplankton that are responsible for a large part of modern oceanic carbonate production. Culture experiments investigating the physiological response of coccolithophore calcification to increased CO2 have yielded contradictory results between and even within species. Here we quantified the calcite mass of dominant coccolithophores in the present ocean and over the past forty thousand years, and found a marked pattern of decreasing calcification with increasing partial pressure of CO2 and concomitant decreasing concentrations of CO3. Our analyses revealed that differentially calcified species and morphotypes ... : 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). ...