Biogeosciences
Biogeosciences
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Articles | Volume 22, issue 21
Articles | Volume 22, issue 21
https://doi.org/10.5194/bg-22-6631-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-22-6631-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 22, issue 21
Research article
 | 
07 Nov 2025
Research article |  | 07 Nov 2025

Rising atmospheric CO2 concentrations: the overlooked factor promoting SW Iberian Forest development across the LGM and the last deglaciation?

Sandra Domingues Gomes, William Fletcher, Abi Stone, Teresa Rodrigues, Andreia Rebotim, Dulce Oliveira, Maria Sánchez Goñi, Fátima Abrantes, and Filipa Naughton

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Short summary
Our study explores how rising CO2 at the end of the last ice age impacted vegetation in the Iberian Peninsula. By analyzing pollen and ocean temperatures in marine sediments, we found that higher CO2 helped forests expand, even in cool or dry conditions. This shows that CO2 played a key role in shaping ecosystems during climate shifts. Understanding this past response helps us see how different factors interact and provides insights into how today’s ecosystems might adapt to rapidly rising CO2.
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