Biogeosciences
Biogeosciences
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Articles | Volume 23, issue 17
Articles | Volume 23, issue 17
https://doi.org/10.5194/bg-23-6149-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-23-6149-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 23, issue 17
Research article
 | 
07 Sep 2026
Research article |  | 07 Sep 2026

Water, carbon, and light use efficiencies in an old hemiboreal coniferous forest: nine-year patterns under hydroclimatic variability

Svyatoslav Rogozin, Alisa Krasnova, Ülo Mander, and Kaido Soosaar

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Short summary
We studied how an old north conifer forest in Estonia uses water, light, and carbon to take up carbon dioxide during nine growing seasons, using continuous eddy covariance measurements. Air became warmer and drier, yet water and light use efficiency stayed stable. Carbon use efficiency was most sensitive to hydroclimatic variability, reflecting the balance between uptake and respiration. This helps predict whether such forests will keep storing carbon as climate dries.
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