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Holocene climatic change reconstructed from diatoms, chironomids, pollen and near-infrared spectroscopy at an alpine lake (Sjuodjijaure) in northern Sweden

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dc.contributor.author Rosén, Peter eng
dc.contributor.author Segerström, Ulf eng
dc.contributor.author Eriksson, Lars eng
dc.contributor.author Renberg, Ingemar eng
dc.contributor.author Birks, Harry John Betteley eng
dc.date.accessioned 2007-12-14T11:52:25Z
dc.date.available 2007-12-14T11:52:25Z
dc.date.issued 2001 eng
dc.identifier.citation The Holocene 2001 11(5): 551-562 en
dc.identifier.issn 0959-6836 eng
dc.identifier.uri http://hdl.handle.net/1956/2504
dc.description.abstract 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. en
dc.language.iso eng eng
dc.publisher SAGE eng
dc.subject Holocene climate eng
dc.subject Lake sediments eng
dc.subject Northern Sweden eng
dc.subject Pollen eng
dc.subject Chironomids eng
dc.subject Diatoms eng
dc.subject Near-infrared spectroscopy eng
dc.title Holocene climatic change reconstructed from diatoms, chironomids, pollen and near-infrared spectroscopy at an alpine lake (Sjuodjijaure) in northern Sweden eng
dc.type Peer reviewed eng
dc.type Journal article eng
dc.subject.nsi VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 nob
bora.peerreviewed Peer reviewed eng
bibo.doi http://dx.doi.org/10.1191/095968301680223503 eng
dc.identifier.doi http://dx.doi.org/10.1191/095968301680223503


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