Articles | Volume 16, issue 20
https://doi.org/10.5194/bg-16-4023-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-16-4023-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
18 Oct 2019
Research article |
| 18 Oct 2019
| 18 Oct 2019
Spatial distribution of environmental indicators in surface sediments of Lake Bolshoe Toko, Yakutia, Russia
Boris K. Biskaborn
CORRESPONDING AUTHOR
Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Potsdam, Germany
Larisa Nazarova
Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Potsdam, Germany
Institute of Geosciences, University of Potsdam, Potsdam, Germany
Institute of Geology and Petroleum Technologies, Kazan Federal University, Kazan, Russia
Lyudmila A. Pestryakova
Northeastern Federal University of Yakutsk, Yakutsk, Russia
Liudmila Syrykh
Department of Physical Geography and Environment, Herzen State Pedagogical University of Russia, St. Petersburg, Russia
Kim Funck
Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Potsdam, Germany
Department for Geography, Humboldt University Berlin, Berlin, Germany
Hanno Meyer
Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Potsdam, Germany
Bernhard Chapligin
Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Potsdam, Germany
Stuart Vyse
Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Potsdam, Germany
Ruslan Gorodnichev
Northeastern Federal University of Yakutsk, Yakutsk, Russia
Evgenii Zakharov
Northeastern Federal University of Yakutsk, Yakutsk, Russia
Institute for Biological Problems of Cryolithozone Siberian Branch of RAS, Yakutsk, Russia
Rong Wang
Key Laboratory of Submarine Geosciences, State Oceanic Administration, Hangzhou, China
Georg Schwamborn
Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Potsdam, Germany
Department of Earth Sciences, Free University of Berlin, Berlin, Germany
Hannah L. Bailey
Ecology and Genetics Research Unit, University of Oulu, Oulu, Finland
Bernhard Diekmann
Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Potsdam, Germany
Institute of Geosciences, University of Potsdam, Potsdam, Germany
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Lakes act as important stores of organic carbon and inorganic sediment material. This study provides a first investigation into carbon and sediment accumulation and storage within an Arctic glacial lake from Far East Russia. It shows that major shifts are related to palaeoclimate variation that affects the development of the lake and its surrounding catchment. Spatial differences to other lake systems from other regions may reflect variability in processes controlled by latitude and altitude.
Ramesh Glückler, Ulrike Herzschuh, Stefan Kruse, Andrei Andreev, Stuart Andrew Vyse, Bettina Winkler, Boris K. Biskaborn, Luidmila Pestryakova, and Elisabeth Dietze
Biogeosciences, 18, 4185–4209, https://doi.org/10.5194/bg-18-4185-2021, https://doi.org/10.5194/bg-18-4185-2021, 2021
Short summary
Short summary
Data about past fire activity are very sparse in Siberia. This study presents a first high-resolution record of charcoal particles from lake sediments in boreal eastern Siberia. It indicates that current levels of charcoal accumulation are not unprecedented. While a recent increase in reconstructed fire frequency coincides with rising temperatures and increasing human activity, vegetation composition does not seem to be a major driver behind changes in the fire regime in the past two millennia.
Iuliia Shevtsova, Ulrike Herzschuh, Birgit Heim, Luise Schulte, Simone Stünzi, Luidmila A. Pestryakova, Evgeniy S. Zakharov, and Stefan Kruse
Biogeosciences, 18, 3343–3366, https://doi.org/10.5194/bg-18-3343-2021, https://doi.org/10.5194/bg-18-3343-2021, 2021
Short summary
Short summary
In the light of climate changes in subarctic regions, notable general increase in above-ground biomass for the past 15 years (2000 to 2017) was estimated along a tundra–taiga gradient of central Chukotka (Russian Far East). The greatest increase occurred in the northern taiga in the areas of larch closed-canopy forest expansion with Cajander larch as a main contributor. For the estimations, we used field data (taxa-separated plant biomass, 2018) and upscaled it based on Landsat satellite data.
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Short summary
To better understand time-series data in lake sediment cores in times of rapidly changing climate, we study within-lake spatial variabilities of environmental indicator data in 38 sediment surface samples along spatial habitat gradients in the boreal deep Lake Bolshoe Toko (Russia). Our methods comprise physicochemical as well as diatom and chironomid analyses. Species diversities vary according to benthic niches, while abiotic proxies depend on river input, water depth, and catchment lithology.
To better understand time-series data in lake sediment cores in times of rapidly changing...
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