Biogeosciences
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Articles | Volume 21, issue 11
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.
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.
Articles | Volume 21, issue 11
Research article
 | 
12 Jun 2024
Research article |  | 12 Jun 2024

Investigating the effect of silicate- and calcium-based ocean alkalinity enhancement on diatom silicification

Aaron Ferderer, Kai G. Schulz, Ulf Riebesell, Kirralee G. Baker, Zanna Chase, and Lennart T. Bach

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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.
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Environmental impacts of ocean alkalinity enhancement
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