Holocene climatic change reconstructed from diatoms, chironomids, pollen and near-infrared spectroscopy at an alpine lake (Sjuodjijaure) in northern Sweden
The results of a multiproxy study reconstructing the climate history of the last 9300 years in northern Sweden are presented. It is based on diatom, chironomid and pollen analyses, as well as near-infrared spec troscopy (NIRS), of a radiocarbon dated sediment core from Sjuodjijaure (67°22N, 18°04E),...
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Language: | English |
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Online Access: | http://dx.doi.org/10.1191/095968301680223503 http://journals.sagepub.com/doi/pdf/10.1191/095968301680223503 |
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crsagepubl:10.1191/095968301680223503 2024-06-23T07:55:36+00:00 Holocene climatic change reconstructed from diatoms, chironomids, pollen and near-infrared spectroscopy at an alpine lake (Sjuodjijaure) in northern Sweden Rosén, Peter Segerström, Ulf Eriksson, Lars Renberg, Ingemar Birks, H. J.B. 2001 http://dx.doi.org/10.1191/095968301680223503 http://journals.sagepub.com/doi/pdf/10.1191/095968301680223503 en eng SAGE Publications http://journals.sagepub.com/page/policies/text-and-data-mining-license The Holocene volume 11, issue 5, page 551-562 ISSN 0959-6836 1477-0911 journal-article 2001 crsagepubl https://doi.org/10.1191/095968301680223503 2024-06-11T04:29:12Z The results of a multiproxy study reconstructing the climate history of the last 9300 years in northern Sweden are presented. It is based on diatom, chironomid and pollen analyses, as well as near-infrared spec troscopy (NIRS), of a radiocarbon dated sediment core from Sjuodjijaure (67°22N, 18°04E), situated 100 m above tree-line in the Scandes mountains. Mean July air temperature was reconstructed using transfer functions established for the region. The biological proxies show significant changes in composition during the Holocene and the inferred temperatures all follow the same general trend. For the period between about 9300 to 7300 cal. BP the reconstructions should be interpreted with caution due to the lack of convincing modern analogues in the training set. However the reconstruction suggest that July temperature was on average about the same as today, with several rapid short-term cold and warm periods. Cold periods were dated to about 8500, 8200 and 7600 cal. years BP and a warm period to about 7700 cal. BP. About 7300 cal. BP, a major shift to a warmer climate occurred. Pine migrated into the area, which was previously covered with birch forest. From the mid-Holocene until today the sediment record suggests a descending tree-limit and a gradual lowering of July temperature. Article in Journal/Newspaper Northern Sweden SAGE Publications Alpine Lake ENVELOPE(-129.182,-129.182,55.529,55.529) The Holocene 11 5 551 562 |
institution |
Open Polar |
collection |
SAGE Publications |
op_collection_id |
crsagepubl |
language |
English |
description |
The results of a multiproxy study reconstructing the climate history of the last 9300 years in northern Sweden are presented. It is based on diatom, chironomid and pollen analyses, as well as near-infrared spec troscopy (NIRS), of a radiocarbon dated sediment core from Sjuodjijaure (67°22N, 18°04E), situated 100 m above tree-line in the Scandes mountains. Mean July air temperature was reconstructed using transfer functions established for the region. The biological proxies show significant changes in composition during the Holocene and the inferred temperatures all follow the same general trend. For the period between about 9300 to 7300 cal. BP the reconstructions should be interpreted with caution due to the lack of convincing modern analogues in the training set. However the reconstruction suggest that July temperature was on average about the same as today, with several rapid short-term cold and warm periods. Cold periods were dated to about 8500, 8200 and 7600 cal. years BP and a warm period to about 7700 cal. BP. About 7300 cal. BP, a major shift to a warmer climate occurred. Pine migrated into the area, which was previously covered with birch forest. From the mid-Holocene until today the sediment record suggests a descending tree-limit and a gradual lowering of July temperature. |
format |
Article in Journal/Newspaper |
author |
Rosén, Peter Segerström, Ulf Eriksson, Lars Renberg, Ingemar Birks, H. J.B. |
spellingShingle |
Rosén, Peter Segerström, Ulf Eriksson, Lars Renberg, Ingemar Birks, H. J.B. Holocene climatic change reconstructed from diatoms, chironomids, pollen and near-infrared spectroscopy at an alpine lake (Sjuodjijaure) in northern Sweden |
author_facet |
Rosén, Peter Segerström, Ulf Eriksson, Lars Renberg, Ingemar Birks, H. J.B. |
author_sort |
Rosén, Peter |
title |
Holocene climatic change reconstructed from diatoms, chironomids, pollen and near-infrared spectroscopy at an alpine lake (Sjuodjijaure) in northern Sweden |
title_short |
Holocene climatic change reconstructed from diatoms, chironomids, pollen and near-infrared spectroscopy at an alpine lake (Sjuodjijaure) in northern Sweden |
title_full |
Holocene climatic change reconstructed from diatoms, chironomids, pollen and near-infrared spectroscopy at an alpine lake (Sjuodjijaure) in northern Sweden |
title_fullStr |
Holocene climatic change reconstructed from diatoms, chironomids, pollen and near-infrared spectroscopy at an alpine lake (Sjuodjijaure) in northern Sweden |
title_full_unstemmed |
Holocene climatic change reconstructed from diatoms, chironomids, pollen and near-infrared spectroscopy at an alpine lake (Sjuodjijaure) in northern Sweden |
title_sort |
holocene climatic change reconstructed from diatoms, chironomids, pollen and near-infrared spectroscopy at an alpine lake (sjuodjijaure) in northern sweden |
publisher |
SAGE Publications |
publishDate |
2001 |
url |
http://dx.doi.org/10.1191/095968301680223503 http://journals.sagepub.com/doi/pdf/10.1191/095968301680223503 |
long_lat |
ENVELOPE(-129.182,-129.182,55.529,55.529) |
geographic |
Alpine Lake |
geographic_facet |
Alpine Lake |
genre |
Northern Sweden |
genre_facet |
Northern Sweden |
op_source |
The Holocene volume 11, issue 5, page 551-562 ISSN 0959-6836 1477-0911 |
op_rights |
http://journals.sagepub.com/page/policies/text-and-data-mining-license |
op_doi |
https://doi.org/10.1191/095968301680223503 |
container_title |
The Holocene |
container_volume |
11 |
container_issue |
5 |
container_start_page |
551 |
op_container_end_page |
562 |
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1802648254056235008 |