Orbital-scale variability in the contribution of foraminifera and coccolithophores to pelagic carbonate production

Cornuault, Pauline; Beaufort, Luc; Pälike, Heiko; Bickert, Torsten; Baumann, Karl-Heinz; Kucera, Michal

doi:10.5194/bg-22-7973-2025

Articles | Volume 22, issue 23

https://doi.org/10.5194/bg-22-7973-2025

© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/bg-22-7973-2025

© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 22, issue 23

Research article

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12 Dec 2025

Research article | Highlight paper |

| 12 Dec 2025

Orbital-scale variability in the contribution of foraminifera and coccolithophores to pelagic carbonate production

Pauline Cornuault, Luc Beaufort, Heiko Pälike, Torsten Bickert, Karl-Heinz Baumann, and Michal Kucera

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https://doi.org/10.5194/bg-22-7973-2025-supplement

Data sets

Coarse and small fraction carbonate content and accumulation rate from Miocene to Quaternary, at ODP Site 154-927, Ceara Rise, tropical Atlantic P. Cornuault et al. https://doi.org/10.1594/PANGAEA.974795

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Understanding the role of calcifying organism communities (here: coccolithophores vs. foraminifera) in determining the long-term burial of carbonate is of fundamental importance to understanding the carbon cycle over geologic time scales. This study proposes that the amount of carbonate buried through time does not primarily depend on whether coccolithophores or foraminifera were the dominant calcifying marine organisms at the time of sediment deposition.