Articles | Volume 21, issue 11
https://doi.org/10.5194/bg-21-2777-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Special issue:
https://doi.org/10.5194/bg-21-2777-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
12 Jun 2024
Research article |
| 12 Jun 2024
| 12 Jun 2024
Investigating the effect of silicate- and calcium-based ocean alkalinity enhancement on diatom silicification
Aaron Ferderer
CORRESPONDING AUTHOR
Institute for Marine and Antarctic Studies, Ecology & Biodiversity, University of Tasmania, Hobart, TAS, Australia
National Collections and Marine Infrastructure, Commonwealth Scientific and Industrial Research Organisation, Hobart, TAS, Australia
Kai G. Schulz
Faculty of Science and Engineering, Southern Cross University, Lismore, NSW, Australia
Ulf Riebesell
Marine Biogeochemistry, Biological Oceanography, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany
Kirralee G. Baker
Institute for Marine and Antarctic Studies, Ecology & Biodiversity, University of Tasmania, Hobart, TAS, Australia
The Australian Centre for Excellence in Antarctic Science (ACEAS), University of Tasmania, Hobart, TAS, Australia
Zanna Chase
Institute for Marine and Antarctic Studies, Ecology & Biodiversity, University of Tasmania, Hobart, TAS, Australia
Lennart T. Bach
Institute for Marine and Antarctic Studies, Ecology & Biodiversity, University of Tasmania, Hobart, TAS, Australia
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Cited
13 citations as recorded by crossref.
- Ocean alkalinity enhancement in an open-ocean ecosystem: biogeochemical responses and carbon storage durability A. Paul et al. 10.5194/bg-22-2749-2025
- Removal of dissolved inorganic carbon from seawater for climate mitigation: potential marine ecosystem impacts G. Hooper et al. 10.3389/fclim.2025.1528951
- “Assessment of potential eutrophication in coastal waters of Gran Canaria: Impact on plankton community under CO2 depletion” J. Santos-Bruña et al. 10.1016/j.marenvres.2024.106919
- Effects of ocean alkalinity enhancement on plankton in the Equatorial Pacific J. Guo et al. 10.1038/s43247-025-02248-7
- Regionally distinct drivers of the carbonate system dynamics in the Drake Passage and northern Antarctic Peninsula L. Arbilla et al. 10.1016/j.jmarsys.2025.104070
- Responses of microbial metabolic rates to non-equilibrated silicate- versus calcium-based ocean alkalinity enhancement L. Marín-Samper et al. 10.5194/bg-21-5707-2024
- Ocean liming effect on a North Atlantic microbial community: changes in composition and rates I. de Castro et al. 10.3389/fmars.2025.1602158
- Perspectives and challenges of marine carbon dioxide removal A. Oschlies et al. 10.3389/fclim.2024.1506181
- Connectivity in protist assemblages across coastal habitats: insights from coastal water in Haizhou Bay, China Z. Zhao et al. 10.1016/j.marenvres.2025.107277
- Potential impacts of marine carbon dioxide removal on ocean oxygen A. Oschlies et al. 10.1088/1748-9326/ade0d4
- Resilience of Phytoplankton and Microzooplankton Communities under Ocean Alkalinity Enhancement in the Oligotrophic Ocean X. Xin et al. 10.1021/acs.est.4c09838
- Early life stages of fish under ocean alkalinity enhancement in coastal plankton communities S. Goldenberg et al. 10.5194/bg-21-4521-2024
- Influence of ocean alkalinity enhancement with olivine or steel slag on a coastal plankton community in Tasmania J. Guo et al. 10.5194/bg-21-2335-2024
12 citations as recorded by crossref.
- Ocean alkalinity enhancement in an open-ocean ecosystem: biogeochemical responses and carbon storage durability A. Paul et al. 10.5194/bg-22-2749-2025
- Removal of dissolved inorganic carbon from seawater for climate mitigation: potential marine ecosystem impacts G. Hooper et al. 10.3389/fclim.2025.1528951
- “Assessment of potential eutrophication in coastal waters of Gran Canaria: Impact on plankton community under CO2 depletion” J. Santos-Bruña et al. 10.1016/j.marenvres.2024.106919
- Effects of ocean alkalinity enhancement on plankton in the Equatorial Pacific J. Guo et al. 10.1038/s43247-025-02248-7
- Regionally distinct drivers of the carbonate system dynamics in the Drake Passage and northern Antarctic Peninsula L. Arbilla et al. 10.1016/j.jmarsys.2025.104070
- Responses of microbial metabolic rates to non-equilibrated silicate- versus calcium-based ocean alkalinity enhancement L. Marín-Samper et al. 10.5194/bg-21-5707-2024
- Ocean liming effect on a North Atlantic microbial community: changes in composition and rates I. de Castro et al. 10.3389/fmars.2025.1602158
- Perspectives and challenges of marine carbon dioxide removal A. Oschlies et al. 10.3389/fclim.2024.1506181
- Connectivity in protist assemblages across coastal habitats: insights from coastal water in Haizhou Bay, China Z. Zhao et al. 10.1016/j.marenvres.2025.107277
- Potential impacts of marine carbon dioxide removal on ocean oxygen A. Oschlies et al. 10.1088/1748-9326/ade0d4
- Resilience of Phytoplankton and Microzooplankton Communities under Ocean Alkalinity Enhancement in the Oligotrophic Ocean X. Xin et al. 10.1021/acs.est.4c09838
- Early life stages of fish under ocean alkalinity enhancement in coastal plankton communities S. Goldenberg et al. 10.5194/bg-21-4521-2024
Latest update: 30 Aug 2025
Short summary
Ocean alkalinity enhancement (OAE) is a promising method of atmospheric carbon removal; however, its ecological impacts remain largely unknown. We assessed the effects of simulated silicate- and calcium-based mineral OAE on diatom silicification. We found that increased silicate concentrations from silicate-based OAE increased diatom silicification. In contrast, the enhancement of alkalinity had no effect on community silicification and minimal effects on the silicification of different genera.
Ocean alkalinity enhancement (OAE) is a promising method of atmospheric carbon removal; however,...
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