Articles | Volume 23, issue 13
https://doi.org/10.5194/bg-23-4779-2026
https://doi.org/10.5194/bg-23-4779-2026
Research article
 | 
09 Jul 2026
Research article |  | 09 Jul 2026

Carbon accumulation in Mediterranean rhodolith beds during the Holocene

Silvia de Juan, Ryan Smazal, Claudio Lo Iacono, Maria del Mar Gil, Andrea Cabrito, Andres Ospina-Alvarez, Jorge Guillén, Grace M. Cott, Laia Illa-López, Hilmar Hinz, and Francesc Maynou

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Cited articles

Aguirre, J., Riding, R., and Braga, J. C.: Diversity of coralline red algae: origination and extinction patterns from the Early Cretaceous to the Pleistocene, Paleobiology, 26, 651–667, https://doi.org/10.1666/0094-8373(2000)026<0651:DOCRAO>2.0.CO;2, 2000. 
Aguirre, J., Braga, J. C., MArtín, J. M., and Betzler, C.: Palaeoenvironmental and stratigraphic significance of Pliocene rhodolith beds and coralline algal bioconstructions from the Carboneras Basin (SE Spain), Geodiversitas, 34, 115–136, https://doi.org/10.5252/g2012n1a7, 2012. 
Aguirre, J., Braga, J. C., and Bassi, D.: Rhodoliths and rhodolith beds in the rock record, in: Rhodolith/maërl beds: A global perspective, Springer, 105–138, https://doi.org/10.1007/978-3-319-29315-8_5, 2017. 
Alonso, B., Guillén, J., Canals, M., Serra, J., Acosta, J., Herranz, P., Sanz, J. L., Calafat, A., and CATAFAU, A.: Los sedimentos de la plataforma continental balear, Acta Geológica Hispánica, 185–196, 1988. 
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Short summary
Rhodolith beds are seabed habitats formed by free-living coralline algae, but their role in storing carbon is poorly known. We studied a sediment deposit beneath a rhodolith bed in the Menorca Channel using seabed mapping, sediment cores, and radiocarbon dating. We found that the deposit has been accumulating since the early Holocene, and stores organic carbon in its sediments at least since 6,000 years ago.
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