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Articles | Volume 23, issue 13
Articles | Volume 23, issue 13
https://doi.org/10.5194/bg-23-4641-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Special issue:
https://doi.org/10.5194/bg-23-4641-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 23, issue 13
Research article
 | 
07 Jul 2026
Research article |  | 07 Jul 2026

Radial growth decline in a tropical Andean treeline in Bolivia

Rose Oelkers, Laia Andreu-Hayles, Rosanne D'Arrigo, Hung T. T. Nguyen, Arturo Pacheco Solana, Milagros Rodriguez-Caton, M. Eugenia Ferrero, Ernesto Tejedor, Alfredo F. Fuentes, Carla Maldonado, and Daniel Ruiz-Carrascal

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Latest update: 14 Nov 2026
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Short summary
We analyzed the tree rings in several Polylepis pepei from a tropical treeline in South America and found that the annual growth rate steadily decreased between 1960 and 2015.  Our results suggest that the trees formed smaller rings in response to the significant increase of hot and dry conditions observed at the site. These results provide the first long-term record of forest age, growth history, and climate dynamics in an understudied biodiversity hotspot in Andes-Amazon region.
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Treeline ecotones under global change: linking spatial patterns...
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