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
31 citations as recorded by crossref.
- Determining the net influence of biological processes on aqueous hydroxide-based ocean alkalinity enhancement: a mesocosm approach D. Fucich et al. https://doi.org/10.3389/fclim.2025.1652680
- “Assessment of potential eutrophication in coastal waters of Gran Canaria: Impact on plankton community under CO2 depletion” J. Santos-Bruña et al. https://doi.org/10.1016/j.marenvres.2024.106919
- Novel field trial for ocean alkalinity enhancement using electrochemically derived aqueous alkalinity A. Savoie et al. https://doi.org/10.3389/fenve.2025.1641277
- Effects of ocean alkalinity enhancement on plankton in the Equatorial Pacific J. Guo et al. https://doi.org/10.1038/s43247-025-02248-7
- Ocean liming effect on a North Atlantic microbial community: changes in composition and rates I. de Castro et al. https://doi.org/10.3389/fmars.2025.1602158
- Early life stages of fish under ocean alkalinity enhancement in coastal plankton communities S. Goldenberg et al. https://doi.org/10.5194/bg-21-4521-2024
- Guidance on integrating marine environmental impacts of ocean alkalinity enhancement into life cycle assessment M. Delval et al. https://doi.org/10.1007/s11367-026-02707-z
- Biogeochemical dynamics of the sea-surface microlayer in a multidisciplinary mesocosm study R. Bibi et al. https://doi.org/10.5194/bg-22-7563-2025
- Connectivity in protist assemblages across coastal habitats: insights from coastal water in Haizhou Bay, China Z. Zhao et al. https://doi.org/10.1016/j.marenvres.2025.107277
- The Verification Challenge of Marine Carbon Dioxide Removal K. Fennel https://doi.org/10.1146/annurev-marine-032123-025717
- Ocean alkalinity enhancement reduces silica ballasting during export due to amplified dissolution P. Suessle et al. https://doi.org/10.5194/bg-23-4691-2026
- Carbon fixation of a temperate plankton community in response to calcium- and silicate-based Ocean Alkalinity Enhancement using air-sea gas exchange measurements J. Schneider et al. https://doi.org/10.5194/bg-23-137-2026
- Resilience to Alkalinity Perturbations Reveals Ecosystem Stability under Ocean Alkalinity Enhancement Y. Liu et al. https://doi.org/10.34133/olar.0157
- Resilience of the gelatinous zooplankton species Oikopleura dioica to ocean alkalinity enhancement A. Bhaumik et al. https://doi.org/10.1371/journal.pone.0344503
- Ocean alkalinity enhancement in an open-ocean ecosystem: biogeochemical responses and carbon storage durability A. Paul et al. https://doi.org/10.5194/bg-22-2749-2025
- Phytoplankton size structure and biogeochemical responses to nutrient enrichment in an oligotrophic coral reef J. Suarez-Caballero & T. Nakamura https://doi.org/10.1007/s00227-026-04854-1
- Removal of dissolved inorganic carbon from seawater for climate mitigation: potential marine ecosystem impacts G. Hooper et al. https://doi.org/10.3389/fclim.2025.1528951
- A high-resolution nested model to study the effects of alkalinity additions in Halifax Harbour, a mid-latitude coastal fjord A. Laurent et al. https://doi.org/10.5194/bg-23-115-2026
- Brucite-inspired ocean alkalinity enhancement alters the biogeochemistry and composition of a phytoplankton community: a Santa Barbara channel case report Z. Welch et al. https://doi.org/10.1088/1748-9326/ae1752
- Responses of microbial metabolic rates to non-equilibrated silicate- versus calcium-based ocean alkalinity enhancement L. Marín-Samper et al. https://doi.org/10.5194/bg-21-5707-2024
- Potential impacts of marine carbon dioxide removal on ocean oxygen A. Oschlies et al. https://doi.org/10.1088/1748-9326/ade0d4
- Impact on oysters in first-of-its-kind field trial of marine Enhanced Rock Weathering (mERW) with olivine as carbon dioxide removal (CDR) strategy E. Jankowska et al. https://doi.org/10.3389/fclim.2026.1851765
- The response of phytoplankton to pH-equilibrated ocean alkalinization: A mesocosm experiment with harbour waters S. Groppelli et al. https://doi.org/10.1016/j.marpolbul.2025.118787
- Abrupt alkalinization alters microbial diversity and promotes the proliferation of marine parasites in coastal microcosm experiments J. Gately et al. https://doi.org/10.1093/icesjms/fsag063
- Response of Diatoms to the Addition of Bamboo in the Eastern Arabian Sea S. Shetye et al. https://doi.org/10.1111/maec.70045
- Carbonate chemistry fitness landscapes inform diatom resilience to future perturbations A. Ferderer et al. https://doi.org/10.1126/sciadv.adu8024
- From carbonate chemistry to community responses: Thematic evolution in ocean acidification and microbial research— a bibliometric analysis Y. Sun et al. https://doi.org/10.1016/j.marenvres.2026.108154
- Impulse response functions as a framework for quantifying ocean-based carbon dioxide removal E. Yankovsky et al. https://doi.org/10.5194/bg-22-5723-2025
- Regionally distinct drivers of the carbonate system dynamics in the Drake Passage and northern Antarctic Peninsula L. Arbilla et al. https://doi.org/10.1016/j.jmarsys.2025.104070
- Perspectives and challenges of marine carbon dioxide removal A. Oschlies et al. https://doi.org/10.3389/fclim.2024.1506181
- Resilience of Phytoplankton and Microzooplankton Communities under Ocean Alkalinity Enhancement in the Oligotrophic Ocean X. Xin et al. https://doi.org/10.1021/acs.est.4c09838
31 citations as recorded by crossref.
- Determining the net influence of biological processes on aqueous hydroxide-based ocean alkalinity enhancement: a mesocosm approach D. Fucich et al. https://doi.org/10.3389/fclim.2025.1652680
- “Assessment of potential eutrophication in coastal waters of Gran Canaria: Impact on plankton community under CO2 depletion” J. Santos-Bruña et al. https://doi.org/10.1016/j.marenvres.2024.106919
- Novel field trial for ocean alkalinity enhancement using electrochemically derived aqueous alkalinity A. Savoie et al. https://doi.org/10.3389/fenve.2025.1641277
- Effects of ocean alkalinity enhancement on plankton in the Equatorial Pacific J. Guo et al. https://doi.org/10.1038/s43247-025-02248-7
- Ocean liming effect on a North Atlantic microbial community: changes in composition and rates I. de Castro et al. https://doi.org/10.3389/fmars.2025.1602158
- Early life stages of fish under ocean alkalinity enhancement in coastal plankton communities S. Goldenberg et al. https://doi.org/10.5194/bg-21-4521-2024
- Guidance on integrating marine environmental impacts of ocean alkalinity enhancement into life cycle assessment M. Delval et al. https://doi.org/10.1007/s11367-026-02707-z
- Biogeochemical dynamics of the sea-surface microlayer in a multidisciplinary mesocosm study R. Bibi et al. https://doi.org/10.5194/bg-22-7563-2025
- Connectivity in protist assemblages across coastal habitats: insights from coastal water in Haizhou Bay, China Z. Zhao et al. https://doi.org/10.1016/j.marenvres.2025.107277
- The Verification Challenge of Marine Carbon Dioxide Removal K. Fennel https://doi.org/10.1146/annurev-marine-032123-025717
- Ocean alkalinity enhancement reduces silica ballasting during export due to amplified dissolution P. Suessle et al. https://doi.org/10.5194/bg-23-4691-2026
- Carbon fixation of a temperate plankton community in response to calcium- and silicate-based Ocean Alkalinity Enhancement using air-sea gas exchange measurements J. Schneider et al. https://doi.org/10.5194/bg-23-137-2026
- Resilience to Alkalinity Perturbations Reveals Ecosystem Stability under Ocean Alkalinity Enhancement Y. Liu et al. https://doi.org/10.34133/olar.0157
- Resilience of the gelatinous zooplankton species Oikopleura dioica to ocean alkalinity enhancement A. Bhaumik et al. https://doi.org/10.1371/journal.pone.0344503
- Ocean alkalinity enhancement in an open-ocean ecosystem: biogeochemical responses and carbon storage durability A. Paul et al. https://doi.org/10.5194/bg-22-2749-2025
- Phytoplankton size structure and biogeochemical responses to nutrient enrichment in an oligotrophic coral reef J. Suarez-Caballero & T. Nakamura https://doi.org/10.1007/s00227-026-04854-1
- Removal of dissolved inorganic carbon from seawater for climate mitigation: potential marine ecosystem impacts G. Hooper et al. https://doi.org/10.3389/fclim.2025.1528951
- A high-resolution nested model to study the effects of alkalinity additions in Halifax Harbour, a mid-latitude coastal fjord A. Laurent et al. https://doi.org/10.5194/bg-23-115-2026
- Brucite-inspired ocean alkalinity enhancement alters the biogeochemistry and composition of a phytoplankton community: a Santa Barbara channel case report Z. Welch et al. https://doi.org/10.1088/1748-9326/ae1752
- Responses of microbial metabolic rates to non-equilibrated silicate- versus calcium-based ocean alkalinity enhancement L. Marín-Samper et al. https://doi.org/10.5194/bg-21-5707-2024
- Potential impacts of marine carbon dioxide removal on ocean oxygen A. Oschlies et al. https://doi.org/10.1088/1748-9326/ade0d4
- Impact on oysters in first-of-its-kind field trial of marine Enhanced Rock Weathering (mERW) with olivine as carbon dioxide removal (CDR) strategy E. Jankowska et al. https://doi.org/10.3389/fclim.2026.1851765
- The response of phytoplankton to pH-equilibrated ocean alkalinization: A mesocosm experiment with harbour waters S. Groppelli et al. https://doi.org/10.1016/j.marpolbul.2025.118787
- Abrupt alkalinization alters microbial diversity and promotes the proliferation of marine parasites in coastal microcosm experiments J. Gately et al. https://doi.org/10.1093/icesjms/fsag063
- Response of Diatoms to the Addition of Bamboo in the Eastern Arabian Sea S. Shetye et al. https://doi.org/10.1111/maec.70045
- Carbonate chemistry fitness landscapes inform diatom resilience to future perturbations A. Ferderer et al. https://doi.org/10.1126/sciadv.adu8024
- From carbonate chemistry to community responses: Thematic evolution in ocean acidification and microbial research— a bibliometric analysis Y. Sun et al. https://doi.org/10.1016/j.marenvres.2026.108154
- Impulse response functions as a framework for quantifying ocean-based carbon dioxide removal E. Yankovsky et al. https://doi.org/10.5194/bg-22-5723-2025
- Regionally distinct drivers of the carbonate system dynamics in the Drake Passage and northern Antarctic Peninsula L. Arbilla et al. https://doi.org/10.1016/j.jmarsys.2025.104070
- Perspectives and challenges of marine carbon dioxide removal A. Oschlies et al. https://doi.org/10.3389/fclim.2024.1506181
- Resilience of Phytoplankton and Microzooplankton Communities under Ocean Alkalinity Enhancement in the Oligotrophic Ocean X. Xin et al. https://doi.org/10.1021/acs.est.4c09838
Saved (final revised paper)
Latest update: 21 Jul 2026
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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