Seawater carbonate chemistry and biological processes of foraminifera, Globigerinoides ruber and Globigerinella siphonifera during experiments, 2011 ...

• Main Authors: Kisakürek, B, Eisenhauer, Anton, Böhm, Florian, Hathorne, Ed C, Erez, Jonathan
• Format: Dataset
• Language: English
• Published: PANGAEA 2011
• Subjects: Biomass/Abundance/Elemental composition; Bottles or small containers/Aquaria <20 L; Chromista; Foraminifera; Globigerinella siphonifera; Globigerinoides ruber; Growth/Morphology; Heterotrophic prokaryotes; Laboratory experiment; Open ocean; Pelagos; Red Sea; Salinity; Single species; Temperate; Temperature; Species; Identification; Sample ID; Replicates; Globigerinoides ruber, shell, weight; Globigerinella siphonifera, shell, weight; Growth rate; Growth rate, standard deviation; Temperature, water; Alkalinity, total; Alkalinity, total, standard deviation; Carbon, inorganic, dissolved; Carbon, inorganic, dissolved, standard deviation; pH; pH, standard deviation; Carbonate ion; Carbonate ion, standard deviation; Carbonate system computation flag; Carbon dioxide; Partial pressure of carbon dioxide water at sea surface temperature wet air; Fugacity of carbon dioxide water at sea surface temperature wet air; Bicarbonate ion; Aragonite saturation state; Calcite saturation state; δ44/40 Ca; δ44/40 Ca, standard deviation; Strontium/Calcium ratio; see references; Measured; Calculated using CO2SYS; Calculated using seacarb after Nisumaa et al. 2010; Calculated; Finnigan TRITON thermal ionization mass spectrometer TIMS; Ocean acidification
• Online Access: https://dx.doi.org/10.1594/pangaea.763297; https://doi.pangaea.de/10.1594/PANGAEA.763297

Specimens of two species of planktic foraminifera, Globigerinoides ruber and Globigerinella siphonifera, were grown under controlled laboratory conditions at a range of temperatures (18-31 °C), salinities (32-44 psu) and pH levels (7.9-8.4). The shells were examined for their calcium isotope compositions (d44/40Ca) and strontium to calcium ratios (Sr/Ca) using Thermal Ionization Mass Spectrometry and Inductively Coupled Plasma Mass Spectrometry. Although the total variation in d44/40Ca (~0.3 per mill) in the studied species is on the same order as the external reproducibility, the data set reveals some apparent trends that are controlled by more than one environmental parameter. There is a well-defined inverse linear relationship between d44/40Ca and Sr/Ca in all experiments, suggesting similar controls on these proxies in foraminiferal calcite independent of species. Analogous to recent results from inorganically precipitated calcite, we suggest that Ca isotope fractionation and Sr partitioning in planktic ... : 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). ...