Multiproxy evidence for terrestrial and aquatic ecosystem responses during the 8.2 ka cold event as recorded at Højby Sø, Denmark
A sediment succession from Højby Sø, a lake in eastern Denmark, covering the time period 9400–7400 cal yr BP was studied using high-resolution geochemistry, magnetic susceptibility, pollen, macrofossil, diatom, and algal pigment analysis to investigate responses of the terrestrial and aquatic ecosys...
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ftcopenhagenunip:oai:pure.atira.dk:publications/4d276725-7d38-43e3-a0b6-e1ced7579c9c 2023-05-15T16:29:28+02:00 Multiproxy evidence for terrestrial and aquatic ecosystem responses during the 8.2 ka cold event as recorded at Højby Sø, Denmark Hede, Mikkel Ulfeldt Rasmussen, Peter Noe-Nygaard, Nanna Clarke, Annemarie L. Vinebrooke, Rolf D. Olsen, Jesper 2010 https://curis.ku.dk/portal/da/publications/multiproxy-evidence-for-terrestrial-and-aquatic-ecosystem-responses-during-the-82-ka-cold-event-as-recorded-at-hoejby-soe-denmark(4d276725-7d38-43e3-a0b6-e1ced7579c9c).html https://doi.org/10.1016/j.yqres.2009.12.002 eng eng info:eu-repo/semantics/restrictedAccess Hede , M U , Rasmussen , P , Noe-Nygaard , N , Clarke , A L , Vinebrooke , R D & Olsen , J 2010 , ' Multiproxy evidence for terrestrial and aquatic ecosystem responses during the 8.2 ka cold event as recorded at Højby Sø, Denmark ' , Quaternary Research , vol. 73 , no. 3 , pp. 485-496 . https://doi.org/10.1016/j.yqres.2009.12.002 article 2010 ftcopenhagenunip https://doi.org/10.1016/j.yqres.2009.12.002 2022-02-24T00:06:17Z A sediment succession from Højby Sø, a lake in eastern Denmark, covering the time period 9400–7400 cal yr BP was studied using high-resolution geochemistry, magnetic susceptibility, pollen, macrofossil, diatom, and algal pigment analysis to investigate responses of the terrestrial and aquatic ecosystems to the 8.2 ka cold event. A reduced pollen production by thermophilous deciduous tree taxa in the period c. 8250–8000 cal yr BP reveal that the forest ecosystem was affected by low temperatures during the summer and winter/early-spring seasons. This finding is consistent with the timing of the 8.2 ka cold event as registered in the Greenland ice cores. At Højby Sø, the climate anomaly appears to have started 200–250 yr earlier than the 8.2 ka cold event as the lake proxy data provide strong evidence for a precipitation-induced distinct increase in catchment soil erosion beginning around 8500 cal yr BP. Alteration of the terrestrial environment then resulted in a major aquatic ecosystem change with nutrient enrichment of the lake and enhanced productivity, which lasted until c. 7900 cal yr BP. Keywords: 8.2 ka cold event; Lake sediments; Palaeoclimate; Pollen; Macrofossils; Geochemistry; Algal pigments; Diatoms; Holocene; Denmark Article in Journal/Newspaper Greenland Greenland ice cores University of Copenhagen: Research Greenland Quaternary Research 73 3 485 496 |
institution |
Open Polar |
collection |
University of Copenhagen: Research |
op_collection_id |
ftcopenhagenunip |
language |
English |
description |
A sediment succession from Højby Sø, a lake in eastern Denmark, covering the time period 9400–7400 cal yr BP was studied using high-resolution geochemistry, magnetic susceptibility, pollen, macrofossil, diatom, and algal pigment analysis to investigate responses of the terrestrial and aquatic ecosystems to the 8.2 ka cold event. A reduced pollen production by thermophilous deciduous tree taxa in the period c. 8250–8000 cal yr BP reveal that the forest ecosystem was affected by low temperatures during the summer and winter/early-spring seasons. This finding is consistent with the timing of the 8.2 ka cold event as registered in the Greenland ice cores. At Højby Sø, the climate anomaly appears to have started 200–250 yr earlier than the 8.2 ka cold event as the lake proxy data provide strong evidence for a precipitation-induced distinct increase in catchment soil erosion beginning around 8500 cal yr BP. Alteration of the terrestrial environment then resulted in a major aquatic ecosystem change with nutrient enrichment of the lake and enhanced productivity, which lasted until c. 7900 cal yr BP. Keywords: 8.2 ka cold event; Lake sediments; Palaeoclimate; Pollen; Macrofossils; Geochemistry; Algal pigments; Diatoms; Holocene; Denmark |
format |
Article in Journal/Newspaper |
author |
Hede, Mikkel Ulfeldt Rasmussen, Peter Noe-Nygaard, Nanna Clarke, Annemarie L. Vinebrooke, Rolf D. Olsen, Jesper |
spellingShingle |
Hede, Mikkel Ulfeldt Rasmussen, Peter Noe-Nygaard, Nanna Clarke, Annemarie L. Vinebrooke, Rolf D. Olsen, Jesper Multiproxy evidence for terrestrial and aquatic ecosystem responses during the 8.2 ka cold event as recorded at Højby Sø, Denmark |
author_facet |
Hede, Mikkel Ulfeldt Rasmussen, Peter Noe-Nygaard, Nanna Clarke, Annemarie L. Vinebrooke, Rolf D. Olsen, Jesper |
author_sort |
Hede, Mikkel Ulfeldt |
title |
Multiproxy evidence for terrestrial and aquatic ecosystem responses during the 8.2 ka cold event as recorded at Højby Sø, Denmark |
title_short |
Multiproxy evidence for terrestrial and aquatic ecosystem responses during the 8.2 ka cold event as recorded at Højby Sø, Denmark |
title_full |
Multiproxy evidence for terrestrial and aquatic ecosystem responses during the 8.2 ka cold event as recorded at Højby Sø, Denmark |
title_fullStr |
Multiproxy evidence for terrestrial and aquatic ecosystem responses during the 8.2 ka cold event as recorded at Højby Sø, Denmark |
title_full_unstemmed |
Multiproxy evidence for terrestrial and aquatic ecosystem responses during the 8.2 ka cold event as recorded at Højby Sø, Denmark |
title_sort |
multiproxy evidence for terrestrial and aquatic ecosystem responses during the 8.2 ka cold event as recorded at højby sø, denmark |
publishDate |
2010 |
url |
https://curis.ku.dk/portal/da/publications/multiproxy-evidence-for-terrestrial-and-aquatic-ecosystem-responses-during-the-82-ka-cold-event-as-recorded-at-hoejby-soe-denmark(4d276725-7d38-43e3-a0b6-e1ced7579c9c).html https://doi.org/10.1016/j.yqres.2009.12.002 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Greenland ice cores |
genre_facet |
Greenland Greenland ice cores |
op_source |
Hede , M U , Rasmussen , P , Noe-Nygaard , N , Clarke , A L , Vinebrooke , R D & Olsen , J 2010 , ' Multiproxy evidence for terrestrial and aquatic ecosystem responses during the 8.2 ka cold event as recorded at Højby Sø, Denmark ' , Quaternary Research , vol. 73 , no. 3 , pp. 485-496 . https://doi.org/10.1016/j.yqres.2009.12.002 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1016/j.yqres.2009.12.002 |
container_title |
Quaternary Research |
container_volume |
73 |
container_issue |
3 |
container_start_page |
485 |
op_container_end_page |
496 |
_version_ |
1766019166287953920 |