Kostrova, S.; Bailey, H.; Biskaborn, B.; Chapligin, B.; Dvornikov, Y.; et al. (2022) Diatom oxygen isotope records of Northern Eurasia as indicators of environmental, hydrological and climate changes in the regions. Limnology and Freshwater Biology, 4, 1444–1446. https://doi.org/10.31951/2658-3518-2022-A-4-1444
Diatom oxygen isotope records of Northern Eurasia as indicators of environmental, hydrological and climate changes in the regions
|Author:||Kostrova, S.1; Bailey, H.2; Biskaborn, B.1;|
1Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Research Unit Potsdam, Telegrafenberg A45, Potsdam, 14473, Germany
2Department of Ecology and Genetics, University of Oulu, Oulu, 90014, Finland
3Department of Landscape Design and Sustainable Ecosystems, Agrarian-Technological Institute, Рeoples’ Friendship University of Russia (RUDN University), Miklukho-Maklaya Str., 6, Moscow, 117198, Russia
4Arctic and Antarctic Research Institute, Bering Str., 38, St. Petersburg, 199397, Russia
5Laboratorio de análisis isotópico, Facultad de Ingeniería, Universidad Andrés Bello, Quillota Str., 980, Viña del Mar, 2531015, Chile
6Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Am Alten Hafen 26, Bremerhaven, 27568, Germany
7Institute of Limnology SPC RAS, Sevastyanova Str., 9, St. Petersburg, 196105, Russia
8North-Eastern Federal University of Yakutsk, Institute of Natural Sciences, Belinskogo Str., 58, Yakutsk, 677000, Russia
9Herzen State Pedagogical University of Russia, Moika, 48, St. Petersburg, 191186, Russia
|Online Access:||PDF Full Text (PDF, 0.2 MB)|
|Persistent link:|| http://urn.fi/urn:nbn:fi-fe2023060151448
Limnological Institute SB RAS,
|Publish Date:|| 2023-06-01
The environmental, hydrological and climate dynamics were assessed in Northern Eurasia during the Holocene. The reconstructions are based on oxygen isotope composition of acustrine diatom silica (δ¹⁸Odiatom) preserved in sediment cores from Ladoga, Bolshoye Shchuchye and Emanda lakes. Interpretation of the δ¹⁸Odiatom data is supported by a comprehensive study of modern isotope hydrology and analysis of local and regional proxies. The Northern Eurasia δ¹⁸Odiatom records are characterized by pronounced short term variations (1.5–5‰), pointing to the unstable climatic and hydrological conditions in the study regions. All records have clearly demonstrated a gradual depletion over the Holocene in their δ¹⁸Odiatom values by ~3–4‰, which follows the trend of decreasing summer insolation, as well as the temperature history of the Northern Hemisphere (NH), indicating a positive response of diatom oxygen isotope signal to large-scale climate changes.
Limnology and freshwater biology
|Pages:||1444 - 1446|
|Type of Publication:||
A1 Journal article – refereed
|Field of Science:||
The study was performed in the frame of the German-Russian projects ‘PLOT − Paleolimnological Transect’ (BMBF; grant 03G0859) and its successor ‘PLOT – Synthesis’ (BMBF; grant 03F0830C) both funded by the German Federal Ministry of Education and Research. The work of A. Ludikova contributes to the State Research Program of the IL RAS No 0154-2019-0001.
© Author(s) 2022. This work is distributed under the Creative Commons Attribution-NonCommercial 4.0 International License.