Biogeosciences
Biogeosciences
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Articles | Volume 22, issue 4
Articles | Volume 22, issue 4
https://doi.org/10.5194/bg-22-831-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-22-831-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 22, issue 4
Research article
 | 
18 Feb 2025
Research article |  | 18 Feb 2025

Locally produced leaf wax biomarkers in the high-altitude Areguni Mountains outweigh downstream transport

Alex Brittingham, Michael T. Hren, Samuel Spitzschuch, Phil Glauberman, Yonaton Goldsmith, Boris Gasparyan, and Ariel Malinsky-Buller

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Short summary
Plant molecules, also called biomarkers, are a tool used for reconstructing climates in the past. In this study, we collected soils and stream sediments in a river catchment in Armenia in order to determine how these molecules move before deposition. We found that trees and grasses produce distinct biomarkers, but these are not incorporated equally into stream sediments. Instead, biomarkers from deciduous trees overprint any upstream transport of grass biomarkers.
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