Landscape of ice and fire : uniquely well-preserved scots pine trunks reveal forest fires near the retreating weichselian ice margin
Environmental conditions for trees that established in central Fennoscandia shortly after the final retreat of the Weichselian ice sheet remain poorly understood. In this study we examine tree rings of five well-preserved Pinus sylvestris (Scots pines) that grew in the area in front of the retreatin...
Published in: | Vegetation History and Archaeobotany |
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Format: | Article in Journal/Newspaper |
Language: | English |
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Umeå universitet, Institutionen för ekologi, miljö och geovetenskap
2023
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Online Access: | http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-218105 https://doi.org/10.1007/s00334-023-00974-6 |
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ftumeauniv:oai:DiVA.org:umu-218105 2024-01-14T10:06:47+01:00 Landscape of ice and fire : uniquely well-preserved scots pine trunks reveal forest fires near the retreating weichselian ice margin Klaminder, Jonatan Fassl, Magdalena Baudet, Marlène Östlund, Lars Linderholm, Johan Zale, Rolf 2023 application/pdf http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-218105 https://doi.org/10.1007/s00334-023-00974-6 eng eng Umeå universitet, Institutionen för ekologi, miljö och geovetenskap Umeå universitet, Institutionen för idé- och samhällsstudier Department of Forest Ecology and Management, Swedish University of Agricultural Sciences, Skogsmarksgränd, Umeå, Sweden Vegetation History and Archaeobotany, 0939-6314, 2023 orcid:0000-0001-8814-0013 orcid:0000-0001-7471-8195 http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-218105 doi:10.1007/s00334-023-00974-6 Scopus 2-s2.0-85178969112 info:eu-repo/semantics/openAccess Climate Early Holocene Forest fires Forest history Lycksele Pinus sylvestris Forest Science Skogsvetenskap Article in journal info:eu-repo/semantics/article text 2023 ftumeauniv https://doi.org/10.1007/s00334-023-00974-6 2023-12-20T23:36:28Z Environmental conditions for trees that established in central Fennoscandia shortly after the final retreat of the Weichselian ice sheet remain poorly understood. In this study we examine tree rings of five well-preserved Pinus sylvestris (Scots pines) that grew in the area in front of the retreating ice sheet in northern Sweden. They became buried in flood sediments deposited by a glacial outburst flood (jökulhlaup) about 9.5–9.9 kyr cal bp and the aim of our study was to search for information regarding damage from fires and bioclimatic conditions in their ancient tree ring records. Our analysis, providing a glimpse into the local early Holocene environment in north-central Sweden, suggests that: 1, there were repeated fires (four fire events detected) during the early Holocene; and 2, bioclimatic conditions when the ancient pines were growing resembled those of modern sub-alpine pine woods. The latter is indicated by their patterns of tree ring growth (growth rate and variation), which were statistically similar to those of pines growing in sub-alpine woods with an open canopy, but different from pines in protected and managed boreal forests. Lower δ13C for the ancient latewood in comparison to pine wood from trees growing near the Scandinavian mountains before the 1850s were probably caused both by stomata fractionation due to lower atmospheric CO2 during the early Holocene and by the moist local environment created by the nearby ancient Ancylus lake, which preceded the Baltic Sea. Periods with cloudy and cold summers were also indicated by the occurrence of ‘false rings’. Finds of charred fragments of Calluna vulgaris (heather, ling), an understory shrub that can burn even with a relatively high moisture content, suggest that heath vegetation was crucial to make fire a reoccurring ecological factor in the area during the early Holocene. Article in Journal/Newspaper Fennoscandia Ice Sheet Northern Sweden Umeå University: Publications (DiVA) Vegetation History and Archaeobotany |
institution |
Open Polar |
collection |
Umeå University: Publications (DiVA) |
op_collection_id |
ftumeauniv |
language |
English |
topic |
Climate Early Holocene Forest fires Forest history Lycksele Pinus sylvestris Forest Science Skogsvetenskap |
spellingShingle |
Climate Early Holocene Forest fires Forest history Lycksele Pinus sylvestris Forest Science Skogsvetenskap Klaminder, Jonatan Fassl, Magdalena Baudet, Marlène Östlund, Lars Linderholm, Johan Zale, Rolf Landscape of ice and fire : uniquely well-preserved scots pine trunks reveal forest fires near the retreating weichselian ice margin |
topic_facet |
Climate Early Holocene Forest fires Forest history Lycksele Pinus sylvestris Forest Science Skogsvetenskap |
description |
Environmental conditions for trees that established in central Fennoscandia shortly after the final retreat of the Weichselian ice sheet remain poorly understood. In this study we examine tree rings of five well-preserved Pinus sylvestris (Scots pines) that grew in the area in front of the retreating ice sheet in northern Sweden. They became buried in flood sediments deposited by a glacial outburst flood (jökulhlaup) about 9.5–9.9 kyr cal bp and the aim of our study was to search for information regarding damage from fires and bioclimatic conditions in their ancient tree ring records. Our analysis, providing a glimpse into the local early Holocene environment in north-central Sweden, suggests that: 1, there were repeated fires (four fire events detected) during the early Holocene; and 2, bioclimatic conditions when the ancient pines were growing resembled those of modern sub-alpine pine woods. The latter is indicated by their patterns of tree ring growth (growth rate and variation), which were statistically similar to those of pines growing in sub-alpine woods with an open canopy, but different from pines in protected and managed boreal forests. Lower δ13C for the ancient latewood in comparison to pine wood from trees growing near the Scandinavian mountains before the 1850s were probably caused both by stomata fractionation due to lower atmospheric CO2 during the early Holocene and by the moist local environment created by the nearby ancient Ancylus lake, which preceded the Baltic Sea. Periods with cloudy and cold summers were also indicated by the occurrence of ‘false rings’. Finds of charred fragments of Calluna vulgaris (heather, ling), an understory shrub that can burn even with a relatively high moisture content, suggest that heath vegetation was crucial to make fire a reoccurring ecological factor in the area during the early Holocene. |
format |
Article in Journal/Newspaper |
author |
Klaminder, Jonatan Fassl, Magdalena Baudet, Marlène Östlund, Lars Linderholm, Johan Zale, Rolf |
author_facet |
Klaminder, Jonatan Fassl, Magdalena Baudet, Marlène Östlund, Lars Linderholm, Johan Zale, Rolf |
author_sort |
Klaminder, Jonatan |
title |
Landscape of ice and fire : uniquely well-preserved scots pine trunks reveal forest fires near the retreating weichselian ice margin |
title_short |
Landscape of ice and fire : uniquely well-preserved scots pine trunks reveal forest fires near the retreating weichselian ice margin |
title_full |
Landscape of ice and fire : uniquely well-preserved scots pine trunks reveal forest fires near the retreating weichselian ice margin |
title_fullStr |
Landscape of ice and fire : uniquely well-preserved scots pine trunks reveal forest fires near the retreating weichselian ice margin |
title_full_unstemmed |
Landscape of ice and fire : uniquely well-preserved scots pine trunks reveal forest fires near the retreating weichselian ice margin |
title_sort |
landscape of ice and fire : uniquely well-preserved scots pine trunks reveal forest fires near the retreating weichselian ice margin |
publisher |
Umeå universitet, Institutionen för ekologi, miljö och geovetenskap |
publishDate |
2023 |
url |
http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-218105 https://doi.org/10.1007/s00334-023-00974-6 |
genre |
Fennoscandia Ice Sheet Northern Sweden |
genre_facet |
Fennoscandia Ice Sheet Northern Sweden |
op_relation |
Vegetation History and Archaeobotany, 0939-6314, 2023 orcid:0000-0001-8814-0013 orcid:0000-0001-7471-8195 http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-218105 doi:10.1007/s00334-023-00974-6 Scopus 2-s2.0-85178969112 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1007/s00334-023-00974-6 |
container_title |
Vegetation History and Archaeobotany |
_version_ |
1788061219507142656 |