Biogeosciences
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Articles | Volume 22, issue 17
Articles | Volume 22, issue 17
https://doi.org/10.5194/bg-22-4405-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-22-4405-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 22, issue 17
Research article
 | 
04 Sep 2025
Research article |  | 04 Sep 2025

Particulate inorganic carbon pools by coccolithophores in low-oxygen–low-pH waters off the Southeast Pacific margin

Francisco Javier Díaz-Rosas, Cristian Antonio Vargas, and Peter von Dassow

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Short summary

Coccolithophores are tiny oceanic algae that produce calcium carbonate, which can help organic matter sink and affect the oxygen levels below. As ocean conditions change, we studied how these algae contribute to carbon transport in a low-oxygen, low-pH region of the Southeast Pacific. Our results show they survive in these challenging conditions, but their impact is lower than in most regions, suggesting that other phytoplankton may play a bigger role in moving organic carbon here.

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