EGU21-15069
https://doi.org/10.5194/egusphere-egu21-15069
EGU General Assembly 2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Geochemical sensitivity of lacustrine ecosystems of Yamal Peninsula (Russian Arctic) to climate change

Irina Fedorova1, Roman Zdorovennov2, Valeriy Kadutskiy3, Grigorii Fedorov1, Elena Shestakova1, Galina Zdorovennova2, Alina Guzeva1, Mariya Chernyshova1, Antonina Chetverova1,5, Larisa Frolova4, and Gulnara Nigamatzyanova4
Irina Fedorova et al.
  • 1Saint Petersburg State University, Saint Petersburg, Russian Federation (i.fedorova@spbu.ru)
  • 2Northern Water Problems Institute Karelian Research Centre Russian Academy of Sciences, Petrozavodsk, Russian Federation
  • 3Siberian Federal University, Krasnoyarsk, Russian Federation
  • 4Kazan Federal Uniervsity, Kazan, Russian Federation
  • 5Arctic and Antarctic Research Institute, Saint Petersburg, Russian Federation

Yamal Peninsula is one of the significant region which terrestrial and aquatic landscapes are sensitive to the climate change. Geochemical processes in lakes can show impact of climate variability on hydrochemical and biological specific, trophic and ecological status. During 2012-2013 and 2018-2020 several Yamal lakes were observed during the summer field investigations. Water samples and sediment cores were taken and analyzed. Distribution of hydrochemical data is wide and cover Yamal coastal zone and central part of the peninsula including several anthropogenic chanced ecosystems. Sediment cores were taken in river terraces of Yuribey, Erkuta, Pysedeiyakha rivers, marine terraces of central Yamal (Neitinskie Lakes), and small core from Beliy island (North part of Yamal). Main ions and trace elements in lakes will be presented in a report as well as TOC/TC, grain-size, dating and paleoecological description of sediments. In order to reconstruct recent environmental and ecological changes half-core MSCL logging (physical properties, 0.5 cm spacing) and half-core XRF scanning (chemical composition, 0.1 cm spacing) have been applied for cores from Neitinskie Lakes (central part of Yamal). The first results of scanning and the statistic will be presented in the report. Comparison of aquatic ecosystem geochemistry for different parts of Yamal peninsula allow to explain the climate impact in different landscapes. Studies supported by RFBR 18-05-60291.  MSCL logging and XRF scanning have been done in Shirshov Institute of Oceanology of RAS by Geotek MSCL-XYZ instrument using.

How to cite: Fedorova, I., Zdorovennov, R., Kadutskiy, V., Fedorov, G., Shestakova, E., Zdorovennova, G., Guzeva, A., Chernyshova, M., Chetverova, A., Frolova, L., and Nigamatzyanova, G.: Geochemical sensitivity of lacustrine ecosystems of Yamal Peninsula (Russian Arctic) to climate change, EGU General Assembly 2021, online, 19–30 Apr 2021, EGU21-15069, https://doi.org/10.5194/egusphere-egu21-15069, 2021.

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