Impact of Holocene climate change on silicon cycling in Lake 850, Northern Sweden
Diatom-rich sediment in a small subarctic lake (Lake 850) was investigated in a 9400 cal. yr BP sediment record in order to explore the impact of Holocene climate evolution on silicon cycling. Diatom stable silicon isotopes (δ30SiBSi) and biogenic silica (BSi) indicate that high BSi concentra...
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Language: | English |
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Online Access: | http://hdl.handle.net/2078.1/249649 https://doi.org/10.1177/09596836211025973 |
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ftunistlouisbrus:oai:dial.uclouvain.be:boreal:249649 2024-05-12T08:08:56+00:00 Impact of Holocene climate change on silicon cycling in Lake 850, Northern Sweden Zahajská, Petra Cartier, Rosine Fritz, Sherilyn C Stadmark, Johanna Opfergelt, Sophie Yam, Ruth Shemesh, Aldo Conley, Daniel J UCL - SST/ELI/ELIE - Environmental Sciences 2021 http://hdl.handle.net/2078.1/249649 https://doi.org/10.1177/09596836211025973 eng eng SAGE Publications boreal:249649 http://hdl.handle.net/2078.1/249649 doi:10.1177/09596836211025973 urn:ISSN:0959-6836 urn:EISSN:1477-0911 info:eu-repo/semantics/openAccess The Holocene, Vol. 1, no.11, p. 095968362110259 (2021) Paleontology Earth-Surface Processes Ecology Archaeology Global and Planetary Change info:eu-repo/semantics/article 2021 ftunistlouisbrus https://doi.org/10.1177/09596836211025973 2024-04-18T17:16:31Z Diatom-rich sediment in a small subarctic lake (Lake 850) was investigated in a 9400 cal. yr BP sediment record in order to explore the impact of Holocene climate evolution on silicon cycling. Diatom stable silicon isotopes (δ30SiBSi) and biogenic silica (BSi) indicate that high BSi concentrations in sediment throughout the Holocene are associated with a lighter Si isotope source of dissolved silica (DSi), such as groundwater or freshly weathered primary minerals. Furthermore, higher BSi concentrations were favoured during the mid-Holocene by low detrital inputs and possibly a longer ice-free period allowing for more diatom production to occur. The diatom δ30SiBSi signature shows a link to changes in regional climate and is influenced by length of diatom growth period and hydrological fluctuations. Lighter Si isotopic values occur during the mid-Holocene, when climate is inferred to be more continental and drier, with pronounced seasonality. In contrast, a heavier Si isotopic signature is observed in the early and late Holocene, when oceanic influences are thought to be stronger and the climate wetter. The δ30SiBSi values have generally lighter signatures as compared with other studies, which supports a light DSi source. Article in Journal/Newspaper Northern Sweden Subarctic DIAL@USL-B (Université Saint-Louis, Bruxelles) The Holocene 31 10 1582 1592 |
institution |
Open Polar |
collection |
DIAL@USL-B (Université Saint-Louis, Bruxelles) |
op_collection_id |
ftunistlouisbrus |
language |
English |
topic |
Paleontology Earth-Surface Processes Ecology Archaeology Global and Planetary Change |
spellingShingle |
Paleontology Earth-Surface Processes Ecology Archaeology Global and Planetary Change Zahajská, Petra Cartier, Rosine Fritz, Sherilyn C Stadmark, Johanna Opfergelt, Sophie Yam, Ruth Shemesh, Aldo Conley, Daniel J Impact of Holocene climate change on silicon cycling in Lake 850, Northern Sweden |
topic_facet |
Paleontology Earth-Surface Processes Ecology Archaeology Global and Planetary Change |
description |
Diatom-rich sediment in a small subarctic lake (Lake 850) was investigated in a 9400 cal. yr BP sediment record in order to explore the impact of Holocene climate evolution on silicon cycling. Diatom stable silicon isotopes (δ30SiBSi) and biogenic silica (BSi) indicate that high BSi concentrations in sediment throughout the Holocene are associated with a lighter Si isotope source of dissolved silica (DSi), such as groundwater or freshly weathered primary minerals. Furthermore, higher BSi concentrations were favoured during the mid-Holocene by low detrital inputs and possibly a longer ice-free period allowing for more diatom production to occur. The diatom δ30SiBSi signature shows a link to changes in regional climate and is influenced by length of diatom growth period and hydrological fluctuations. Lighter Si isotopic values occur during the mid-Holocene, when climate is inferred to be more continental and drier, with pronounced seasonality. In contrast, a heavier Si isotopic signature is observed in the early and late Holocene, when oceanic influences are thought to be stronger and the climate wetter. The δ30SiBSi values have generally lighter signatures as compared with other studies, which supports a light DSi source. |
author2 |
UCL - SST/ELI/ELIE - Environmental Sciences |
format |
Article in Journal/Newspaper |
author |
Zahajská, Petra Cartier, Rosine Fritz, Sherilyn C Stadmark, Johanna Opfergelt, Sophie Yam, Ruth Shemesh, Aldo Conley, Daniel J |
author_facet |
Zahajská, Petra Cartier, Rosine Fritz, Sherilyn C Stadmark, Johanna Opfergelt, Sophie Yam, Ruth Shemesh, Aldo Conley, Daniel J |
author_sort |
Zahajská, Petra |
title |
Impact of Holocene climate change on silicon cycling in Lake 850, Northern Sweden |
title_short |
Impact of Holocene climate change on silicon cycling in Lake 850, Northern Sweden |
title_full |
Impact of Holocene climate change on silicon cycling in Lake 850, Northern Sweden |
title_fullStr |
Impact of Holocene climate change on silicon cycling in Lake 850, Northern Sweden |
title_full_unstemmed |
Impact of Holocene climate change on silicon cycling in Lake 850, Northern Sweden |
title_sort |
impact of holocene climate change on silicon cycling in lake 850, northern sweden |
publisher |
SAGE Publications |
publishDate |
2021 |
url |
http://hdl.handle.net/2078.1/249649 https://doi.org/10.1177/09596836211025973 |
genre |
Northern Sweden Subarctic |
genre_facet |
Northern Sweden Subarctic |
op_source |
The Holocene, Vol. 1, no.11, p. 095968362110259 (2021) |
op_relation |
boreal:249649 http://hdl.handle.net/2078.1/249649 doi:10.1177/09596836211025973 urn:ISSN:0959-6836 urn:EISSN:1477-0911 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1177/09596836211025973 |
container_title |
The Holocene |
container_volume |
31 |
container_issue |
10 |
container_start_page |
1582 |
op_container_end_page |
1592 |
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1798852076901498880 |