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

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...

Full description

Bibliographic Details
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:
pH
Online Access:https://dx.doi.org/10.1594/pangaea.834251
https://doi.pangaea.de/10.1594/PANGAEA.834251
Description
Summary: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. ...