Seawater carbonate chemistry and incorporation of Mg, Sr, Ba, U, and B in High-Mg Calcite Benthic Foraminifers ...

• Main Authors: Not, C, Thibodeau, B, Yokoyama, Yusuke
• Format: Dataset
• Language: English
• Published: PANGAEA 2018
• Subjects: Amphisorus hemprichii; Baculogypsina sphaerulata; Benthos; Biomass/Abundance/Elemental composition; Bottles or small containers/Aquaria <20 L; Coast and continental shelf; Foraminifera; Heterotrophic prokaryotes; Laboratory experiment; North Pacific; Single species; Temperate; Type; Species; Registration number of species; Uniform resource locator/link to reference; Experiment duration; Partial pressure of carbon dioxide water at sea surface temperature wet air; Magnesium/Calcium ratio; Magnesium/Calcium ratio, standard deviation; Strontium/Calcium ratio; Strontium/Calcium ratio, standard deviation; Barium/Calcium ratio; Barium/Calcium ratio, standard deviation; Uranium/Calcium ratio; Uranium/Calcium ratio, standard deviation; Boron/Calcium ratio; Boron/Calcium ratio, standard deviation; Temperature, water; pH; pH, standard deviation; Partial pressure of carbon dioxide, standard deviation; Carbonate ion; Bicarbonate ion; Carbon, inorganic, dissolved; Aragonite saturation state; Calcite saturation state; Salinity; Alkalinity, total; Mass; Diameter; Carbonate system computation flag; Carbon dioxide; Fugacity of carbon dioxide water at sea surface temperature wet air; Calculated using seacarb after Nisumaa et al. 2010; Ocean Acidification International Coordination Centre OA-ICC; Pacific; Ocean acidification
• Online Access: https://dx.doi.org/10.1594/pangaea.891206; https://doi.pangaea.de/10.1594/PANGAEA.891206

Measurement of elemental ratios (E/Ca) have been performed in two symbiont-bearing species of high-Mg calcite benthic foraminifers (hyaline, Baculogypsina sphaerulata and porcelaneous, Amphisorus hemprichii), cultured under five pCO2 levels, representing pre-industrial, modern and three predicted future values. E/Ca ratios were analyzed by Laser Ablation coupled with Inductively Coupled Plasma Mass Spectrometer (LA-ICP-MS). We measured several E/Ca such as Mg/Ca, Sr/Ca, Ba/Ca, U/Ca and B/Ca simultaneously. We observed that high-Mg calcite benthic foraminifers possess higher E/Ca than low-Mg calcite foraminifers, irrespective of their calcification mode (hyaline or porcelaneous). In both modes of calcification, Mg, Sr, Ba, U and B incorporation could be controlled by Rayleigh fractionation. However, more data is needed to validate and quantify the relative importance this process and closely investigate the presence/absence of other mechanism. Therefore, it highlights the need for a multi-elemental approach ... : In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2016) 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 2018-05-23. ...