Seawater carbonate chemistry and biological processes during experiments with four strains of Emiliania huxleyi

• Main Authors: Langer, Gerald, Nehrke, Gernot, Probert, Ian, Ly, J, Ziveri, Patrizia
• Format: Dataset
• Language: English
• Published: PANGAEA 2009
• Subjects: Alkalinity; Gran titration (Gran; 1950); total; Aragonite saturation state; Bicarbonate ion; Bottles or small containers/Aquaria (<20 L); Calcification/Dissolution; Calcite saturation state; Calculated; Calculated using CO2SYS; Calculated using seacarb after Nisumaa et al. (2010); Carbon; inorganic; dissolved; particulate; production per cell; organic; Carbonate ion; Carbonate system computation flag; Chromista; Conductivity meter (WTW; Weilheim; Gemany); Element analyser CNS; EURO EA; Emiliania huxleyi; EPOCA; EUR-OCEANS; European network of excellence for Ocean Ecosystems Analysis; European Project on Ocean Acidification; Event label; EXP; Experiment; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Growth/Morphology; Growth rate; standard deviation; Haptophyta; Identification; Laboratory experiment; Laboratory strains; Nitrate; Ocean acidification
• Online Access: https://doi.pangaea.de/10.1594/PANGAEA.733946; https://doi.org/10.1594/PANGAEA.733946

Four strains of the coccolithophore E. huxleyi (RCC1212, RCC1216, RCC1238, RCC1256) were grown in dilute batch culture at four CO2 levels ranging from ~200 µatm to ~1200 µatm. Growth rate, particulate organic carbon content, and particulate inorganic carbon content were measured, and organic and inorganic carbon production calculated. The four strains did not show a uniform response to carbonate chemistry changes in any of the analysed parameters and none of the four strains displayed a response pattern previously described for this species. We conclude that the sensitivity of different strains of E. huxleyi to acidification differs substantially and that this likely has a genetic basis. We propose that this can explain apparently contradictory results reported in the literature.