Articles | Volume 45, issue 1
https://doi.org/10.5194/jm-45-177-2026
https://doi.org/10.5194/jm-45-177-2026
Research article
 | 
16 Mar 2026
Research article |  | 16 Mar 2026

Unraveling Southern Ocean diatom diversity across the Eocene–Oligocene transition

Volkan Özen, Johan Renaudie, and David Lazarus

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Cited articles

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Anderson, L. D. and Delaney, M. L.: Middle Eocene to early Oligocene paleoceanography from Agulhas Ridge, Southern Ocean (Ocean Drilling Program Leg 177, Site 1090), Paleoceanography, 20, 2004PA001043, https://doi.org/10.1029/2004PA001043, 2005. 
Auderset, A., Moretti, S., Taphorn, B., Ebner, P.-R., Kast, E., Wang, X. T., Schiebel, R., Sigman, D. M., Haug, G. H., and Martínez-García, A.: Enhanced ocean oxygenation during Cenozoic warm periods, Nature, 609, 77–82, https://doi.org/10.1038/s41586-022-05017-0, 2022. 
Bach, L. T. and Taucher, J.: CO2 effects on diatoms: a synthesis of more than a decade of ocean acidification experiments with natural communities, Ocean Sci., 15, 1159–1175, https://doi.org/10.5194/os-15-1159-2019, 2019. 
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The Eocene–Oligocene transition was a pivotal interval in Earth's geological history, marked by cooling and Antarctic glaciation. Our research explores how Southern Ocean diatoms responded to these changes. By analyzing records from multiple sites, we revealed previously unrecognized diatom diversity, and identified distinct patterns in diversity and extinction. These findings deepen our understanding of the interplay between climatic perturbations and the biosphere.
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