Thiele, Matthias; Spiegel, Timo; Adam-Beyer, Nicole; Scholz, Florian; Perner, Mirjam: Sulfate reduction rates in sediments and bottom water from Kiel Bight, SW Baltic Sea 2023 to 2025 [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.997773 (dataset in review), In: Thiele, M et al.: Microbial sulfate reduction rates, geochemical micro profiles and benthic chamber experiment data in the Kiel Bight, SW Baltic Sea from 2023 to 2025 [dataset bundled publication]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.997735 (dataset in review)
Abstract:
This dataset presents microbial sulfate reduction rates (SRR) from eight stations, in Kiel Bight, near Fehmarn and Flensburg Fjord. Sediments and water column samples were taken during the research cruises BE-09/2023 (12.09.2023), L23-13 (13.09.2023 – 15.09.2023), AL618 (18.08.2024 – 08.09.2024), Sagitta24-1 (16.09.2024), Sagitta24-2 (23.09.2024), Hai24VE2 (24.09.2024), BE01/2025 (23.01.2025), L25-2b (09.02.2025 – 17.02.2025) and EMB374 (04.09.2025 - 13.09.2025). Sediment cores were recovered using Multicorer or Rumohrlot. Subcores were taken from the cores and 35S radiotracer was added centimeter-wise, incubated for 17-24 hours at in-situ temperature of the retrieved cores, sliced, transferred in zinc acetate and stored at -20°C until analysis. Water samples were collected by a CTD/Rosette at 3 different water depth (1, 2, 6 m asf) and from bottom water of the sediment cores. 35S radiotracer was added directly to the samples incubated for 17-24 hours at in-situ temperature and proceeded as for sediments. The analysis followed in the laboratory at the home institute and sulfate reduction rates were quantified after Kallmeyer et al. (2004), using cold chromium distillation, with modifications after Roy et al. (2014). The data set provides the first spatial overview of SRR variability in Kiel Bight and reveals differences between the late summer conditions in the years 2023, 2024 and 2025, as well as winter conditions from 2025. Together with microbiological, geochemical, sensor, and benthic chamber data the results help to better understand spatial and temporal variations in sedimentary sulfide production, retention and emission to the bottom water of Kiel Bight.
Keyword(s):
Related to:
Thiele, Matthias; Perner, Mirjam (2026): PrimePrevention: Spatial mapping of sedimentary, microbial communities in Kiel Bight, Germany. European Nucleotide Archive (ENA), insdc:PRJNA1465582
Thiele, Matthias; Spiegel, Timo; Adam-Beyer, Nicole; Scholz, Florian; Perner, Mirjam (in prep.): Microbial community composition in times of expanding hypoxic bottom water and benthic sulfide production in Kiel Bight, SW Baltic Sea.
References:
Kallmeyer, Jens; Ferdelman, Timothy G; Weber, Andreas; Fossing, Henrik; Jørgensen, Bo Barker (2004): A cold chromium distillation procedure for radiolabeled sulfide applied to sulfate reduction measurements. Limnology and Oceanography-Methods, 2(6), 171-180, https://doi.org/10.4319/lom.2004.2.171
Røy, Hans; Weber, Hannah S; Tarpgaard, Irene H; Ferdelman, Timothy G; Jørgensen, Bo Barker (2014): Determination of dissimilatory sulfate reduction rates in marine sediment via radioactive 35 S tracer. Limnology and Oceanography-Methods, 12(4), 196-211, https://doi.org/10.4319/lom.2014.12.196
Spiegel, Timo; Scholz, Florian; Schmidt, Mark; Perner, Mirjam (2026): Water column, solid phase and porewater data in the Kiel Bight, SW Baltic Sea from 2016 to 2025 [dataset bundled publication]. PANGAEA, https://doi.org/10.1594/PANGAEA.988013
Project(s):
Funding:
Federal Ministry of Research, Technology and Space (BMFTR), grant/award no. 03F0953C: DAM mareXtreme - PrimePrevention, GEOMAR
Coverage:
Median Latitude: 54.525034 * Median Longitude: 10.102389 * South-bound Latitude: 54.432923 * West-bound Longitude: 9.831300 * North-bound Latitude: 54.799668 * East-bound Longitude: 10.707335
Date/Time Start: 2023-09-12T00:00:00 * Date/Time End: 2025-09-11T09:09:51
Minimum DEPTH, sediment, experiment: 0.005 m * Maximum DEPTH, sediment, experiment: 0.250 m
Event(s):
AL618_60-1 * Latitude: 54.473040 * Longitude: 9.947260 * Date/Time: 2024-08-29T09:17:25 * Elevation: -25.0 m * Campaign: AL618 * Basis: Alkor (1990) * Method/Device: CTD/Rosette (CTD-RO)
AL618_61-1 * Latitude: 54.530030 * Longitude: 10.040870 * Date/Time: 2024-08-29T10:05:05 * Elevation: -28.0 m * Campaign: AL618 * Basis: Alkor (1990) * Method/Device: CTD/Rosette (CTD-RO)
AL618_62-1 * Latitude: 54.497870 * Longitude: 10.180060 * Date/Time: 2024-08-29T10:57:33 * Elevation: -23.0 m * Campaign: AL618 * Basis: Alkor (1990) * Method/Device: CTD/Rosette (CTD-RO)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Type of study | Study type | Thiele, Matthias | |||
| 2 | Event label | Event | Thiele, Matthias | |||
| 3 | Station label | Station | Thiele, Matthias | |||
| 4 | Date/Time of event | Date/Time | Thiele, Matthias | |||
| 5 | Latitude of event | Latitude | Thiele, Matthias | |||
| 6 | Longitude of event | Longitude | Thiele, Matthias | |||
| 7 | Height above sea floor/altitude | Height above sea floor | m | Thiele, Matthias | ||
| 8 | DEPTH, sediment, experiment | Depth sed exp | m | Thiele, Matthias | Geocode | |
| 9 | Sulfate reduction rate | SRR | nmol/cm3/day | Thiele, Matthias | Cold chromium distillation according to Kallmeyer et al. (2004) |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)
Status:
Curation Level: Enhanced curation (CurationLevelC) * Processing Level: PANGAEA data processing level 4 (ProcLevel4)
Size:
814 data points