Wildfire history of the boreal forest of south-western Yakutia (Siberia) over the last two millennia documented by a lake-sediment charcoal record
Wildfires, as a key disturbance in forest ecosystems, are shaping the world's boreal landscapes. Changes in fire regimes are closely linked to a wide array of environmental factors, such as vegetation composition, climate change, and human activity. Arctic and boreal regions and, in particular,...
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2021
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ftubpotsdam:oai:kobv.de-opus4-uni-potsdam:63651 2024-09-09T19:28:05+00:00 Wildfire history of the boreal forest of south-western Yakutia (Siberia) over the last two millennia documented by a lake-sediment charcoal record Glückler, Ramesh Herzschuh, Ulrike (Prof. Dr.) Kruse, Stefan Andreev, Andrei Vyse, Stuart Andrew Winkler, Bettina Biskaborn, Boris (Prof.) Pestryakova, Luidmila Agafyevna (Prof. Dr.) Dietze, Elisabeth (Dr.) 2021-07-14 https://publishup.uni-potsdam.de/frontdoor/index/index/docId/63651 https://doi.org/10.5194/bg-18-4185-2021 eng eng https://publishup.uni-potsdam.de/frontdoor/index/index/docId/63651 https://doi.org/10.5194/bg-18-4185-2021 https://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/closedAccess ddc:550 ddc:570 Institut für Biochemie und Biologie Institut für Umweltwissenschaften und Geographie article doc-type:article 2021 ftubpotsdam https://doi.org/10.5194/bg-18-4185-2021 2024-06-19T00:09:34Z Wildfires, as a key disturbance in forest ecosystems, are shaping the world's boreal landscapes. Changes in fire regimes are closely linked to a wide array of environmental factors, such as vegetation composition, climate change, and human activity. Arctic and boreal regions and, in particular, Siberian boreal forests are experiencing rising air and ground temperatures with the subsequent degradation of permafrost soils leading to shifts in tree cover and species composition. Compared to the boreal zones of North America or Europe, little is known about how such environmental changes might influence long-term fire regimes in Russia. The larch-dominated eastern Siberian deciduous boreal forests differ markedly from the composition of other boreal forests, yet data about past fire regimes remain sparse. Here, we present a high-resolution macroscopic charcoal record from lacustrine sediments of Lake Khamra (southwest Yakutia, Siberia) spanning the last ca. 2200 years, including information about charcoal particle sizes and morphotypes. Our results reveal a phase of increased charcoal accumulation between 600 and 900 CE, indicative of relatively high amounts of burnt biomass and high fire frequencies. This is followed by an almost 900-year-long period of low charcoal accumulation without significant peaks likely corresponding to cooler climate conditions. After 1750 CE fire frequencies and the relative amount of biomass burnt start to increase again, coinciding with a warming climate and increased anthropogenic land development after Russian colonization. In the 20th century, total charcoal accumulation decreases again to very low levels despite higher fire frequency, potentially reflecting a change in fire management strategies and/or a shift of the fire regime towards more frequent but smaller fires. A similar pattern for different charcoal morphotypes and comparison to a pollen and non-pollen palynomorph (NPP) record from the same sediment core indicate that broad-scale changes in vegetation composition were ... Article in Journal/Newspaper Arctic Climate change permafrost Yakutia Siberia University of Potsdam: publish.UP Arctic Biogeosciences 18 13 4185 4209 |
institution |
Open Polar |
collection |
University of Potsdam: publish.UP |
op_collection_id |
ftubpotsdam |
language |
English |
topic |
ddc:550 ddc:570 Institut für Biochemie und Biologie Institut für Umweltwissenschaften und Geographie |
spellingShingle |
ddc:550 ddc:570 Institut für Biochemie und Biologie Institut für Umweltwissenschaften und Geographie Glückler, Ramesh Herzschuh, Ulrike (Prof. Dr.) Kruse, Stefan Andreev, Andrei Vyse, Stuart Andrew Winkler, Bettina Biskaborn, Boris (Prof.) Pestryakova, Luidmila Agafyevna (Prof. Dr.) Dietze, Elisabeth (Dr.) Wildfire history of the boreal forest of south-western Yakutia (Siberia) over the last two millennia documented by a lake-sediment charcoal record |
topic_facet |
ddc:550 ddc:570 Institut für Biochemie und Biologie Institut für Umweltwissenschaften und Geographie |
description |
Wildfires, as a key disturbance in forest ecosystems, are shaping the world's boreal landscapes. Changes in fire regimes are closely linked to a wide array of environmental factors, such as vegetation composition, climate change, and human activity. Arctic and boreal regions and, in particular, Siberian boreal forests are experiencing rising air and ground temperatures with the subsequent degradation of permafrost soils leading to shifts in tree cover and species composition. Compared to the boreal zones of North America or Europe, little is known about how such environmental changes might influence long-term fire regimes in Russia. The larch-dominated eastern Siberian deciduous boreal forests differ markedly from the composition of other boreal forests, yet data about past fire regimes remain sparse. Here, we present a high-resolution macroscopic charcoal record from lacustrine sediments of Lake Khamra (southwest Yakutia, Siberia) spanning the last ca. 2200 years, including information about charcoal particle sizes and morphotypes. Our results reveal a phase of increased charcoal accumulation between 600 and 900 CE, indicative of relatively high amounts of burnt biomass and high fire frequencies. This is followed by an almost 900-year-long period of low charcoal accumulation without significant peaks likely corresponding to cooler climate conditions. After 1750 CE fire frequencies and the relative amount of biomass burnt start to increase again, coinciding with a warming climate and increased anthropogenic land development after Russian colonization. In the 20th century, total charcoal accumulation decreases again to very low levels despite higher fire frequency, potentially reflecting a change in fire management strategies and/or a shift of the fire regime towards more frequent but smaller fires. A similar pattern for different charcoal morphotypes and comparison to a pollen and non-pollen palynomorph (NPP) record from the same sediment core indicate that broad-scale changes in vegetation composition were ... |
format |
Article in Journal/Newspaper |
author |
Glückler, Ramesh Herzschuh, Ulrike (Prof. Dr.) Kruse, Stefan Andreev, Andrei Vyse, Stuart Andrew Winkler, Bettina Biskaborn, Boris (Prof.) Pestryakova, Luidmila Agafyevna (Prof. Dr.) Dietze, Elisabeth (Dr.) |
author_facet |
Glückler, Ramesh Herzschuh, Ulrike (Prof. Dr.) Kruse, Stefan Andreev, Andrei Vyse, Stuart Andrew Winkler, Bettina Biskaborn, Boris (Prof.) Pestryakova, Luidmila Agafyevna (Prof. Dr.) Dietze, Elisabeth (Dr.) |
author_sort |
Glückler, Ramesh |
title |
Wildfire history of the boreal forest of south-western Yakutia (Siberia) over the last two millennia documented by a lake-sediment charcoal record |
title_short |
Wildfire history of the boreal forest of south-western Yakutia (Siberia) over the last two millennia documented by a lake-sediment charcoal record |
title_full |
Wildfire history of the boreal forest of south-western Yakutia (Siberia) over the last two millennia documented by a lake-sediment charcoal record |
title_fullStr |
Wildfire history of the boreal forest of south-western Yakutia (Siberia) over the last two millennia documented by a lake-sediment charcoal record |
title_full_unstemmed |
Wildfire history of the boreal forest of south-western Yakutia (Siberia) over the last two millennia documented by a lake-sediment charcoal record |
title_sort |
wildfire history of the boreal forest of south-western yakutia (siberia) over the last two millennia documented by a lake-sediment charcoal record |
publishDate |
2021 |
url |
https://publishup.uni-potsdam.de/frontdoor/index/index/docId/63651 https://doi.org/10.5194/bg-18-4185-2021 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Climate change permafrost Yakutia Siberia |
genre_facet |
Arctic Climate change permafrost Yakutia Siberia |
op_relation |
https://publishup.uni-potsdam.de/frontdoor/index/index/docId/63651 https://doi.org/10.5194/bg-18-4185-2021 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.5194/bg-18-4185-2021 |
container_title |
Biogeosciences |
container_volume |
18 |
container_issue |
13 |
container_start_page |
4185 |
op_container_end_page |
4209 |
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1809897373997989888 |