Late Holocene vegetation and fire history in Western Putorana Plateau (subarctic Siberia, Russia) inferred from pollen and charcoal analysis of the lake sediments

Novenko, E.; Chepurnaia, A.; Rudenko, O.; Mazei, N.; Kupriyanov, D.; Batalova, V.

Авторы: Novenko E., Chepurnaia A., Rudenko O., Mazei N., Kupriyanov D., Batalova V.
Сборник: Lakes, Memories of the Landscape
Тезисы
Год издания: 2022
Место издания: BARILOCHE - ARGENTINA
Первая страница: 226
Последняя страница: 226
DOI: 10.5281/ZENODO.7305148
Аннотация: We present a reconstruction of vegetation dynamics and fire history from the western part of the Putorana Plateau during the Late Holocene. The study area is located in the remote and poorly investigated region of Central Siberia, which represents an important area for understanding climate and environmental changes in the Russian Subarctic. Pollen and macroscopic charcoal data from three closely located lakes along an altitudinal transect in the Khantaika River basin show no major changes in vegetation in the study area during the last 3.9 ka BP. However, a detailed analysis of the data reveals an extension of forest coverage in lake catchments at about 3.1 ka BP followed by a gradual degradation of woodlands, and an expansion of shrubs and tundra vegetation at around 2.7-2.5 ka BP. Fire activity was relatively high between 3.0 and 2.0 ka BP compared to all but the most modern part of the record, while macroscopic charcoal accumulation reaches a maximum in the most recent surface sediments. This suggests an increase in the frequency and area of fires in the region since the end of the 19th century, which has no analogue during the Late Holocene.
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Late Holocene vegetation and fire history in Western Putorana Plateau (subarctic Siberia, Russia) inferred from pollen and charcoal analysis of the lake sedimentsтезисы доклада

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