Seawater carbonate chemistry and lithium elemental and isotope systematics of cultured brachiopods ...

• Main Authors: Gaspers, Natalie, Magna, Tomas, Jurikova, Hana, Henkel, Daniela, Eisenhauer, Anton, Azmy, Karem, Tomasovych, Adam
• Format: Dataset
• Language: English
• Published: PANGAEA 2021
• Subjects: Animalia; Benthic animals; Benthos; Biomass/Abundance/Elemental composition; Brachiopoda; Coast and continental shelf; Containers and aquaria 20-1000 L or < 1 m**2; Laboratory experiment; Magellania venosa; Other studied parameter or process; Single species; South Pacific; Temperate; Type; Species; Registration number of species; Uniform resource locator/link to reference; Sample ID; Lithium; δ7Li; δ7Li, standard deviation; Salinity; Temperature, water; Partial pressure of carbon dioxide water at sea surface temperature wet air; pH; Alkalinity, total; Carbon, inorganic, dissolved; Bicarbonate; Carbonate ion; Calcite saturation state; Carbonate system computation flag; Carbon dioxide; Fugacity of carbon dioxide water at sea surface temperature wet air; Bicarbonate ion; Aragonite saturation state; Experiment; Calculated using seacarb after Nisumaa et al. 2010; Ocean Acidification International Coordination Centre OA-ICC; Ocean acidification
• Online Access: https://dx.doi.org/10.1594/pangaea.943332; https://doi.pangaea.de/10.1594/PANGAEA.943332

Lithium has proven a powerful tracer of weathering processes and chemical seawater evolution. Skeletal components of marine calcifying organisms, and in particular brachiopods, present promising archives of Li signatures. However, Li incorporation mechanisms and potential influence from biological processes or environmental conditions require a careful assessment. In order to constrain Li systematics in brachiopod shells, we present Li concentrations and isotope compositions for 11 calcitic brachiopod species collected from six different geographic regions, paralleled with data from culturing experiments where brachiopods were grown under varying environmental conditions and seawater chemistry (pH–pCO2, temperature, Mg/Ca ratio). The recent brachiopod specimens collected across different temperate and polar environments showed broadly consistent δ7Li values ranging from 25.2 to 28.1‰ (with mean δ7Li of 26.9 ± 1.5‰), irrespective of taxonomic rank, indicating that incorporation of Li isotopes into brachiopod ... : In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2021) 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 2022-04-19. ...