Seawater carbonate chemistry and impacts of calcium and carbonate ion concentration on Mg and Sr incorporation in cultured benthic foraminifera (Ammonia tepida and Heterostegina depressa), 2011, supplement to: Dueñas-Bohórquez, Adriana; Raitzsch, Markus; de Nooijer, Lennart Jan; Reichart, Gert-Jan (2011): Independent impacts of calcium and carbonate ion concentration on Mg and Sr incorporation in cultured benthic foraminifera. Marine Micropaleontology, 81(3-4), 122-130

• Main Authors: Dueñas-Bohórquez, Adriana, Raitzsch, Markus, de Nooijer, Lennart Jan, Reichart, Gert-Jan
• Format: Dataset
• Language: English
• Published: PANGAEA - Data Publisher for Earth & Environmental Science 2011
• Subjects: Ammonia tepida; Benthos; Bottles or small containers/Aquaria <20 L; Calcification/Dissolution; Chromista; Coast and continental shelf; Foraminifera; Heterostegina depressa; Heterotrophic prokaryotes; Laboratory experiment; Mortality/Survival; North Atlantic; Single species; Temperate; Species; Identification; Salinity; Salinity, standard deviation; Temperature, water; Temperature, standard deviation; Alkalinity, total; Alkalinity, total, standard deviation; Carbon, inorganic, dissolved; Carbon, inorganic, dissolved, standard deviation; pH; pH, standard deviation; Carbonate ion; Carbonate ion, standard deviation; Calcite saturation state; Calcite saturation state, standard deviation; Number of specimens; Ammonia tepida, chambers added; Ammonia tepida, chambers added per individual; Rows of chambers added; Rows of chambers added per individual; Replicates; Ammonia tepida, magnesium/calcium ratio; Ammonia tepida, magnesium/calcium ratio, standard deviation; Heterostegina depressa, magnesium/calcium ratio; Heterostegina depressa, magnesium/calcium ratio, standard deviation; Ammonia tepida, strontium/calcium ratio; Ammonia tepida, strontium/calcium ratio, standard deviation; Heterostegina depressa, strontium/calcium ratio; Heterostegina depressa, strontium/calcium ratio, 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; Measured; 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; Adriana; Ocean acidification
• Online Access: https://dx.doi.org/10.1594/pangaea.770474; https://doi.pangaea.de/10.1594/PANGAEA.770474

Laboratory culture experiments were conducted to determine effects of seawater carbonate ion concentration ([CO32-]), and thereby calcite saturation state, on Mg and Sr incorporation into calcite of two species of shallow-water benthic foraminifera: Ammonia tepida and Heterostegina depressa. Impact on Mg and Sr incorporation by increased seawater [CO32-] and thereby higher calcite saturation state, is absent in either species. Comparison to results from a similar culturing experiment, in which calcite saturation state was varied as a function of [Ca2+], reveals that saturation state affects incorporation of Mg and Sr through calcium- rather than carbonate availability. The similarity in response by both species is surprising since the average Mg/Ca ratio is ~ 70 times higher in H. depressa than in A. tepida. Furthermore, these results suggest that the ions involved in biomineralization (i.e. Ca2+ and DIC) are processed by separate cellular transport mechanisms. The similar response of Mg and Sr incorporation in this study suggests that only differences in the Ca2+ transport mechanism affect divalent cation partitioning. : 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).