Biogeosciences
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Articles | Volume 23, issue 5
Articles | Volume 23, issue 5
https://doi.org/10.5194/bg-23-1833-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-23-1833-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 23, issue 5
Research article
 | 
10 Mar 2026
Research article |  | 10 Mar 2026

Detection of dietary stress and geophagic behaviour forced by dry seasons in Miocene Gomphotherium

Rute Coimbra, Niels de Winter, Maria Ríos, Rui Bernardino, Darío Estraviz-López, Priscila Lohmann, Roberta Martino, Aurora Grandal-d'Anglade, Fernando Rocha, and Philippe Claeys

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Short summary
To understand human impact on climate and biodiversity, we studied fossil teeth of Gomphotherium from Miocene Portugal. Chemical patterns, like those in modern elephants, show seasonal diet changes and geophagy during dry periods. This suggests dry seasons shaped animal behavior and ecosystems, offering insights into how land life responded to past warming—and how it might react to future climate change.
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