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): 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
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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 weathering behaviour of calcite and dunite was investigated in long-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). These experiments elucidate the actual weathering behavior of calcite and dunite under conditions as close to the natural system as possible. 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).
Supplement to:
Fuhr, Michael; Dale, Andrew W; Wallmann, Klaus; Bährle, Rebecca; Kalapurakkal, Habeeb Thanveer; Spiegel, Timo; Dobashi, Ryo; Buchholz, Björn; Schmidt, Mark; Perner, Mirjam; Geilert, Sonja (accepted): Calcite is an efficient and low-cost material to enhance benthic weathering in shelf sediments of the Baltic Sea. Nature Communications
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: 54.432556 * Median Longitude: 10.090400 * 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
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Size:
2 datasets
Download Data
Datasets listed in this bundled publication
- Fuhr, M; Dale, AW; Wallmann, K et al. (2025): Cation concentrations during benthic weathering of calcite and dunite in benthocosm experiments. https://doi.org/10.1594/PANGAEA.974041
- Fuhr, M; Dale, AW; Wallmann, K et al. (2025): Total alkalinity during benthic weathering of calcite and dunite in benthocosm experiments. https://doi.org/10.1594/PANGAEA.974040