Volcanic ash leaching alters the trace metal distribution within the coral holobiont of <i>Stylophora pistillata</i>

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

doi:10.5194/bg-22-5809-2025

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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Cumulative views and downloads (calculated since 05 May 2025)

Month	HTML	PDF	XML	Total
May 2025	238	66	8	312
Jun 2025	104	24	8	136
Jul 2025	156	52	10	218
Aug 2025	336	64	0	400
Sep 2025	1,110	34	12	1,156
Oct 2025	292	61	12	365
Nov 2025	230	91	34	355
Dec 2025	172	137	17	326
Jan 2026	223	99	24	346
Feb 2026	181	133	11	325
Mar 2026	176	110	8	294
Apr 2026	161	99	14	274
May 2026	73	58	9	140
Jun 2026	17	19	12	48
Jul 2026	32	29	152	213

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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.