Fuhr, Michael; Dale, Andy W; Wallmann, Klaus; Bährle, Rebecca; Kalapurakkal, Habeeb Thanveer; Sommer, Stefan; Spiegel, Timo; Buchholz, Björn; Schmidt, Mark; Perner, Mirjam; Geilert, Sonja (2025): Cation concentrations during benthic weathering of calcite and dunite in benthocosm experiments [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.974041, In: Fuhr, M et al. (2025): Benthic weathering of calcite and dunite in benthocosm experiments between Sept. 2022 and Sept. 2023 [dataset bundled publication]. PANGAEA, https://doi.org/10.1594/PANGAEA.974781
Always quote citation above when using data! You can download the citation in several formats below.
Published: 2025-02-10 • DOI registered: 2025-03-11
Abstract:
Enhanced benthic weathering has been proposed to serve as a efficient negative emission strategy. The precise weatherig behaviour of calcite and dunite was investigated in leng-term experiments in benthocosms. These experiments were conducted between Sept. 2022 and Sept. 2023 ashore at the Kiel Fjord. The latter are large plastic containers (~0.8 m²) that are partly filled with sediments, with constant flow-through of Baltic Sea bottom water. The sediments, obtained from Boknis Eck in the Eckernförde Bay in March 2022, were amended with calcite and dunite in triplicate (22 mol/m² equivalent) . Three additional benthocosms were left unamended to serve as controls. The used materials were obtained from Sibelco (dunite) and from the german Lime Stone Association (calcite). Samples were obtained using benthic chambers (chamber volume of 400 ml) that were placed on the sediment for three hours. Samples were taken at the beginning (_in) and at the end of the deployment (_out). All samples were filtered through a 0.2 µm cellulose membrane filter and refrigerated in 25 ml ZinsserTM scintillation vials. Acidified sub-samples (30 μl suprapure HNO3- + 3 ml sample) were prepared for analyses of major and trace elements (Si, Na, K, Li, B, Mg, Ca, Sr, Mn, Ni and Fe) by inductively coupled plasma optical emission spectroscopy (ICP-OES, Varian 720-ES).
Supplement to:
Fuhr, Michael; Dale, Andrew W; Wallmann, Klaus; Bährle, Rebecca; Kalapurakkal, Habeeb Thanveer; Sommer, Stefan; Spiegel, Timo; Dobashi, Ryo; Buchholz, Björn; Schmidt, Mark; Perner, Mirjam; Geilert, Sonja (2025): Calcite is an efficient and low-cost material to enhance benthic weathering in shelf sediments of the Baltic Sea. Communications Earth & Environment, 6, 106, https://doi.org/10.1038/s43247-025-02079-6
References:
Riebesell, Ulf; Basso, Daniela; Geilert, Sonja; Dale, Andrew W; Kreuzburg, Matthias (2023): Mesocosm experiments in ocean alkalinity enhancement research. In: Guide to Best Practices in Ocean Alkalinity Enhancement Research, edited by: Oschlies, A., Stevenson, A., Bach, L. T., Fennel, K., Rickaby, R. E. M., Satterfield, T., Webb, R., and Gattuso, J.-P., Copernicus Publications, State Planet, 2-oae2023, 6, https://doi.org/10.5194/sp-2-oae2023-6-2023
Project(s):
Funding:
Federal Ministry of Education and Research (BMBF), grant/award no. 03F0895A: DAM CDRmare - RETAKE, GEOMAR
Coverage:
Median Latitude: 54.469940 * Median Longitude: 10.068742 * South-bound Latitude: 54.329750 * West-bound Longitude: 10.041670 * North-bound Latitude: 54.516670 * East-bound Longitude: 10.149960
Date/Time Start: 2022-02-22T10:00:00 * Date/Time End: 2023-09-06T00:00:00
Minimum Elevation: -27.0 m * Maximum Elevation: -27.0 m
Event(s):
Kiel-Fjord_Benthocosms * Latitude: 54.329750 * Longitude: 10.149960 * Date/Time Start: 2022-09-26T00:00:00 * Date/Time End: 2023-09-06T00:00:00 * Method/Device: Mesocosm experiment (MESO)
L22_Feb_22_core * Latitude: 54.516670 * Longitude: 10.041670 * Date/Time: 2022-02-22T10:00:00 * Elevation: -27.0 m * Location: Boknis Eck * Campaign: L22_Feb_22 (Day trip) * Basis: Littorina * Method/Device: Grab (GRAB) * Comment: Original sampling location of tested surface sediments; salinity: 21; water temperature: 4.2 °C
L22_Feb_23_core * Latitude: 54.516670 * Longitude: 10.041670 * Date/Time: 2022-02-23T10:00:00 * Elevation: -27.0 m * Location: Boknis Eck * Campaign: L22_Feb_23 (Day trip) * Basis: Littorina * Method/Device: Grab (GRAB) * Comment: Original sampling location of tested surface sediments; salinity: 21; water temperature: 4.2 °C
Parameter(s):
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
3888 data points
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