Seawater carbonate chemistry and changes in isotope fractionation during nitrate assimilation by marine eukaryotic and prokaryotic algae

• Main Authors: Chen, Yawen, Yang, Jin-Yu Terence, Tang, Jin-Ming, Hong, Haizheng, Kao, Shuh-Ji, Dai, Minhan, Shi, Dalin
• Format: Dataset
• Language: English
• Published: PANGAEA 2024
• Subjects: Alkalinity; total; standard deviation; Aragonite saturation state; Bacteria; Bicarbonate ion; Biomass/Abundance/Elemental composition; Bottles or small containers/Aquaria (<20 L); Calcite saturation state; Calculated using CO2SYS; Calculated using seacarb after Nisumaa et al. (2010); Carbon; inorganic; dissolved; Carbon/Nitrogen ratio; Carbonate ion; Carbonate system computation flag; Carbon dioxide; Carbon per cell; Cell biovolume; Chromista; Cyanobacteria; Difference δ15N; intracellular and medium nitrate; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Growth/Morphology; Growth rate; Laboratory experiment; Laboratory strains; Natural log of fractional remaining nitrate; Nitrate; Ocean acidification
• Online Access: https://doi.pangaea.de/10.1594/PANGAEA.968756; https://doi.org/10.1594/PANGAEA.968756

We measured N and O isotope effects during nitrate assimilation and physiological states of the marine diatom Thalassiosira weissflogii and Synechococcus under different pH (8.1 or 7.8) and pCO2 (400 or 800 μatm) conditions. This dataset is included in the OA-ICC data compilation maintained in the framework of the IAEA Ocean Acidification International Coordination Centre (see https://oa-icc.ipsl.fr). Original data were downloaded from Zenodo (see Source) by the OA-ICC data curator. In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2024) 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). The date of carbonate chemistry calculation by seacarb is 2024-05-29.