Biogeosciences
Biogeosciences
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Articles | Volume 22, issue 20
Articles | Volume 22, issue 20
https://doi.org/10.5194/bg-22-5809-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-22-5809-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 22, issue 20
Research article
 | 
21 Oct 2025
Research article |  | 21 Oct 2025

Volcanic ash leaching alters the trace metal distribution within the coral holobiont of Stylophora pistillata

Frank Förster, Sebastian Flöter, Lucie Sauzéat, Stéphanie Reynaud, Eric Achterberg, Alexandra Tsay, Christine Ferrier-Pagès, and Tom E. Sheldrake

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Short summary
Explosive volcanic eruptions produce ash that, upon ocean deposition, alters seawater chemistry by leaching or adsorbing metals. Corals like Stylophora pistillata incorporate these metals in its various compartments (tissue, symbionts and skeleton), with most metal changes appearing in the coral skeleton. We present a novel dataset of ash-seawater leaching results, trace metal analysis in the different coral compartments from cultured corals maintained under a control and ash exposed condition.
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