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)


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 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).

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Metadata Access
Creator Säring, Friederike ORCID logo; Veit-Köhler, Gritta; Behrend, Ben; Seifert, Derya; Liskow, Iris; Link, Heike (ORCID: 0000-0002-8484-845X)
Publisher PANGAEA
Publication Year 2021
Funding Reference Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven Crossref Funder ID AWI_PS96_02 ; Deutsche Forschungsgemeinschaft, Bonn Crossref Funder ID 238058495 Dynamics of benthic ecosystem functioning in response to the disintegration of the ice shelves in the western Weddell Sea; Deutsche Forschungsgemeinschaft, Bonn Crossref Funder ID 365901123 Bedeutung von Meio- und Makrofauna für Ökosystemfunktion: Auswirkungen regional unterschiedlicher Eisbedeckungsmuster; German Research Foundation Crossref Funder ID 5472008 Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas
Rights Creative Commons Attribution 4.0 International;
OpenAccess true
Resource Type Dataset
Format text/tab-separated-values
Size 3611 data points
Discipline Earth System Research
Spatial Coverage (-55.529W, -76.099S, -11.118E, -63.843N); Weddell Sea
Temporal Coverage Begin 2015-12-24T01:29:00Z
Temporal Coverage End 2016-02-08T02:03:00Z