Influence of temperature and CO2 on the strontium and magnesium composition of coccolithophore calcite ...

• Main Authors: Müller, Marius N, Lebrato, Mario, Riebesell, Ulf, Barcelos e Ramos, Joana, Schulz, Kai Georg, Blanco-Ameijeiras, S, Sett, Scarlett, Eisenhauer, Anton, Stoll, Heather M
• Format: Dataset
• Language: English
• Published: PANGAEA 2014
• Subjects: Biomass/Abundance/Elemental composition; Bottles or small containers/Aquaria <20 L; Calcidiscus quadriperforatus; Chromista; Coccolithus braarudii; Emiliania huxleyi; Gephyrocapsa oceanica; Haptophyta; Laboratory experiment; Laboratory strains; Not applicable; Pelagos; Phytoplankton; Single species; Experiment; Species; Temperature, water; Partial pressure of carbon dioxide water at sea surface temperature wet air; Partial pressure of carbon dioxide, standard deviation; Strontium/Calcium ratio; Strontium, partition coefficient; Magnesium/Calcium ratio; Magnesium distribution coefficient; Phosphorus/Calcium ratio; Iron/Calcium ratio; Irradiance; LightDark cycle; Strontium/Calcium ratio, standard deviation; Magnesium/Calcium ratio, standard deviation; Salinity; pH; pH, standard deviation; Calcite saturation state; Calcite saturation state, standard deviation; Carbon, inorganic, dissolved; Carbon, inorganic, dissolved, standard deviation; Alkalinity, total; Alkalinity, total, standard deviation; Carbon dioxide; Carbon dioxide, standard deviation; Bicarbonate ion; Bicarbonate ion, standard deviation; Carbonate ion; Carbonate ion, standard deviation; Growth rate; Growth rate, standard deviation; Carbon, organic, particulate, production per cell; Particulate organic carbon, production, standard deviation; Carbon, inorganic, particulate, production per cell; Particulate inorganic carbon, production, standard deviation; Ocean acidification
• Online Access: https://dx.doi.org/10.1594/pangaea.834251; https://doi.pangaea.de/10.1594/PANGAEA.834251

Marine calcareous sediments provide a fundamental basis for palaeoceanographic studies aiming to reconstruct past oceanic conditions and understand key biogeochemical element cycles. Calcifying unicellular phytoplankton (coccolithophores) are a major contributor to both carbon and calcium cycling by photosynthesis and the production of calcite (coccoliths) in the euphotic zone, and the subsequent long-term deposition and burial into marine sediments. Here we present data from controlled laboratory experiments on four coccolithophore species and elucidate the relation between the divalent cation (Sr, Mg and Ca) partitioning in coccoliths and cellular physiology (growth, calcification and photosynthesis). Coccolithophores were cultured under different seawater temperature and carbonate chemistry conditions. The partition coefficient of strontium (DSr) was positively correlated with both carbon dioxide (pCO2) and temperature but displayed no coherent relation to particulate organic and inorganic carbon ... : In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Lavigne et al, 2014) 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 is 2014-07-23. ...