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Articles | Volume 21, issue 9
Articles | Volume 21, issue 9
https://doi.org/10.5194/bg-21-2335-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
Special issue:
https://doi.org/10.5194/bg-21-2335-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 21, issue 9
Research article
 | 
15 May 2024
Research article |  | 15 May 2024

Influence of ocean alkalinity enhancement with olivine or steel slag on a coastal plankton community in Tasmania

Jiaying A. Guo, Robert F. Strzepek, Kerrie M. Swadling, Ashley T. Townsend, and Lennart T. Bach

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Latest update: 20 Nov 2024
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Short summary
Ocean alkalinity enhancement aims to increase atmospheric CO2 sequestration by adding alkaline materials to the ocean. We assessed the environmental effects of olivine and steel slag powder on coastal plankton. Overall, slag is more efficient than olivine in releasing total alkalinity and, thus, in its ability to sequester CO2. Slag also had less environmental effect on the enclosed plankton communities when considering its higher CO2 removal potential based on this 3-week experiment.
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Environmental impacts of ocean alkalinity enhancement
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