Biogeosciences
Biogeosciences
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Articles | Volume 23, issue 8
Articles | Volume 23, issue 8
https://doi.org/10.5194/bg-23-2803-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-23-2803-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 23, issue 8
Research article
 | 
22 Apr 2026
Research article |  | 22 Apr 2026

Mercury concentration records in tree rings of sessile oak and Douglas fir – The role of pollution and climate

Alexander Land, Aleta Neugebauer, Jürgen Franzaring, Petra Schmidt, and Harald Biester

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Latest update: 23 Oct 2026
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Short summary
Trees take up mercury through their leaves and enrich it in their tree-rings. We investigated tree-ring records of oak and Douglas fir in Germany reaching back ~120 years. We have found that the overall magnitude of mercury loads in trees are determined by local atmospheric Hg concentrations while changes in mercury uptake are controlled by climate. Oak and Douglas fir show different Hg records through time as a results of different adaptation strategies to high temperatures and drought.
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