Sediment characteristics (Chla, Phaeo, TOC, TN, δ13C, δ15N, grain size) at stations in the Weddell Sea (POLARSTERN cruise PS 96, ANT-XXXI/2, December 2015–February 2016)

• Main Authors: Säring, Friederike, Veit-Köhler, Gritta, Behrend, Ben, Seifert, Derya, Liskow, Iris, Link, Heike
• Format: Dataset
• Language: English
• Published: PANGAEA 2021
• Subjects: Antarctica; ANT-XXXI/2 FROSN; box corer; Carbon; organic; total; Chlorophyll a; Chlorophyll a per unit sediment mass; Cruise/expedition; Date/Time of event; Depth; bottom/max; sediment/rock; top/min; Elevation of event; Event label; Flash combustion in a Flash 2000 (Thermo) elemental analyser to a Delta V advantage (Thermo) isotope ratio masspectrometer; Flash combustion in a Flash 2000 (Thermo) elemental analyzer; Fluorometry; Gear; Gear identification number; Giant box corer; GKG; Grain size; Mastersizer 3000; Malvern Instrument Inc.; Grain size data; Latitude of event; Longitude of event; MUC; MultiCorer; Nitrogen; organic matter; phaeopigments; Phaeopigments per unit sediment mass; pigments; Polarstern; Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas; PS96; PS96/001-7; PS96/001-8; PS96/017-3; PS96/026-10; PS96/026-11; PS96/026-7; PS96/026-8; PS96/037-8; Antarctic; Arctic; Weddell; Weddell Sea; Antarc*; Berichte zur Polar- und Meeresforschung; Reports on Polar and Marine Research; Sea ice
• Online Access: https://doi.pangaea.de/10.1594/PANGAEA.932718; https://doi.org/10.1594/PANGAEA.932718

This dataset contains abiotic and biotic data from sediment samples from nine sites in the Weddell Sea (mostly South-Eastern). Data are provided for sediment pigments (chlorophyll a and phaeopigment content through fluorometry), total organic carbon (TOC), total nitrogen (TN), stable isotope values of carbon and nitrogen (δ13C, δ15N) and grain size (silt&clay < 32 µm, very fine sand 63–125 µm sand, fine sand 125–250 µm, medium sand 250–500 µm, coarse sand 500–1000 µm, larger coarse sand > 1000 µm). Before the TOC and carbon isotope analysis the sediment samples were acidified to eliminate inorganic carbon. A minimum of three replicate samples (cores) were collected using a MUC10 multicorer or giant box corer. Sediment cores were subsampled with a 60-ml syringe (inner diameter 2.7 cm) for stations 017, 026, 061, 072, and with a 10-ml syringe (inner diameter 1 cm) for stations 001, 037, 048, 104, 115. Subsamples were sliced in 1-cm steps down to 5 cm depth. Detailed methods are described in Säring et al. (submitted) except for stable isotopes: Flash combustion in a Flash 2000 (Thermo) elemental analyser to a Delta V advantage (Thermo) isotope ratio masspectrometer. δ values are reported relative to atmospheric N2 (δ15N) and Vienna PeeDee Belemnite (δ13C). Reference materials for stable isotope analysis: IAEA-N1, IAEA-N2, IAEA-N3, NBS 22, IAEA-CH-3 and IAEA-CH-6; calibration material: Acetanilide (Merck). The analytical precision for both stable isotope ratios was <±0.2‰. Cores with the label -e (Environment) were only used to collect the above data. Environmental and fauna data were collected from cores with the label -i (Incubation). This data table is part of a larger study analysing the role of environmental parameters for meio- and macrofaunal community composition (see Related to below).