Relative abundances of coccolith species in surface sediment samples from Polarstern expedition PS97 ...

• Main Authors: Vollmar, Nele Manon, Baumann, Karl-Heinz, Saavedra-Pellitero, Mariem, Hernández-Almeida, Iván
• Format: Dataset
• Language: English
• Published: PANGAEA 2021
• Subjects: Antarctic; Antarctic Circumpolar Current; coccolith; coccolith abundances; Drake Passage; PS97; relative abundance; Southern Ocean; Surface sediment; Event label; DEPTH, sediment/rock; Algirosphaera robusta; Calcidiscus leptoporus; Emiliania huxleyi; Gephyrocapsa ericsonii; Gephyrocapsa muellerae; Gephyrocapsa oceanica; Umbilicosphaera foliosa; Coccoliths, other; Coccoliths; Coccolithus braarudii; Florisphaera profunda; Helicosphaera carteri; Syracosphaera spp.; Umbilicosphaera sibogae; Calcidiscus quadriperforatus; Reticulofenestra sessilis; Umbellosphaera spp.; Oolithus fragilis; Pontosphaera spp.; Calciosolenia brasiliensis; Syracosphaera pulchra; Reworked; Coccolithus pelagicus; Umbilicosphaera hulburtiana; Copilia mediterranea; MultiCorer; Scanning electron microscope SEM; Polarstern; ADAPTation of COCCOlithophore communities to environmental change in the Southern Ocean ADAPT-COCCO; Antarc*
• Online Access: https://dx.doi.org/10.1594/pangaea.932831; https://doi.pangaea.de/10.1594/PANGAEA.932831

This dataset includes the relative abundances of coccolith species identified with a scanning electron microscope from surface sediment samples samples with a Multicorer during Polarstern Expedition PS97 (Lamy, 2016, doi:10.2312/BZPM_0701_2016), extending from the southern Chilean Margin towards the south across the Drake Passage. The uppermost centimetre of the multicores were sampled and prepared with a combined dilution/filtering technique following Andruleit (1996) doi:10.2307/1485964. Between 66 and 153 mg of dry bulk sediment per sample were suspended in demineralized water buffered with ammonia and ultrasonicated for up to 30 s. The suspensions were split to one-hundredth with a rotary sample divider, filtered through polycarbonate membrane filters with a pore size of 0.45 μm, and dried in an oven at 40 °C for 24 h. Out of the dried filters, a piece of approximately 1 cm² was cut out, mounted on an aluminium scanning electron microscope (SEM) stub, fixed with carbon conductive tabs and sputter-coated ...