EGU General Assembly 2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Holocene climate in Northern Urals (Komi Republic, Russia): a multi-proxy approach based on pollen and brGDGTs

Chéïma Barhoumi1, Sébastien Joannin2, Adam A. Ali2, Guillemette Ménot3, Yulia Golubeva4, Dmitri Subetto5, Alexander Kryshen6, Igor Drobyshev7, and Odile Peyron2
Chéïma Barhoumi et al.
  • 1Albrecht-von-Haller Institute for Plant Sciences, University of Göttingen, Göttingen, Germany (
  • 2ISEM, Université de Montpellier, Montpellier, France
  • 3LGL-TPE, ENS Lyon, Lyon, France
  • 4Institute of Geology, Russian Academy of Sciences, Moscow, Russia
  • 5Department of Geography, Herzen State Pedagogical University of Russia, Saint Petersburg, Russia
  • 6Forest Research Institute, Karelian Research Centre of the Russian Academy of Sciences, Petrozavodsk, Russia
  • 7Forest Research Institute & Southern Swedish Forest Research Centre, Swedish University of Agricultural Sciences, Alnarp, Sweden

The functioning of the boreal forests of Russia is still little documented and little understood. It is governed by complex mechanisms that link climate, vegetation and disturbances, such as fires or human impact.In this presentation, we aim to provide robust reconstructions of the Holocene climate (temperatures and precipitation) of the Vychegda River basin in the Republic of Komi region, based on two different proxies: pollen assemblages and GDGTs (Glycerol Dialkyl Glycerol Tetraethers). This first study of GDGTs in this area corresponds to a preliminary step for the calibration of this proxy in peats. Higher temperatures and precipitation are recorded between 7000 and 4000 cal. yr BP (mean annual temperatures around 3°C and precipitation between 600 and 700 mm per year). This climatic optimum is in agreement with previous pollen-based climate reconstructions, and climate patterns in the neighboring Russian and Fennoscandia (Komi Republic - previous study-, Arctic Russia, Siberia and Northern Europe, Andreev and Klimanov, 2000; Golubeva, 2008; Seppä et al., 2009a). These results, in conjunction with the reconstruction of fire activity and vegetation dynamics in this region, led to a better understanding of the crossed influences of these factors. In particular, vegetation is mainly controlled by climate during the first part of the Holocene, while a threshold is reached on in fire frequency after 3500 cal. yr BP and this parameter has a greater impact on vegetation than climate. Over the past 600 years, the intensification of human activities led to overexploitation of the forest and an increase in its fire activity.

How to cite: Barhoumi, C., Joannin, S., Ali, A. A., Ménot, G., Golubeva, Y., Subetto, D., Kryshen, A., Drobyshev, I., and Peyron, O.: Holocene climate in Northern Urals (Komi Republic, Russia): a multi-proxy approach based on pollen and brGDGTs, EGU General Assembly 2022, Vienna, Austria, 23–27 May 2022, EGU22-12651,, 2022.

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