Late-glacial chironomid-based temperature reconstructions for Lago Piccolo di Avigliana in the southwestern Alps (Italy)
Chironomid headcapsules were used to reconstruct late glacial and early-Holocene summer temperatures at Lago Piccolo di Avigliana (LPA). Two training sets (northern Sweden, North America) were used to infer temperatures. The reconstructed patterns of temperature change agreed well with the GRIP and...
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ftunivutrecht:oai:dspace.library.uu.nl:1874/31283 2023-07-23T04:20:25+02:00 Late-glacial chironomid-based temperature reconstructions for Lago Piccolo di Avigliana in the southwestern Alps (Italy) Larocque, I. Finsinger, W. 2008 image/pdf https://dspace.library.uu.nl/handle/1874/31283 en eng 0031-0182 https://dspace.library.uu.nl/handle/1874/31283 info:eu-repo/semantics/OpenAccess Biologie Late Glacial Temperature Chironomids Vegetation dynamics Italy Article 2008 ftunivutrecht 2023-07-01T23:31:43Z Chironomid headcapsules were used to reconstruct late glacial and early-Holocene summer temperatures at Lago Piccolo di Avigliana (LPA). Two training sets (northern Sweden, North America) were used to infer temperatures. The reconstructed patterns of temperature change agreed well with the GRIP and NGRIP δ18O records. Inferred temperatures were high during the Bølling (ca 19 °C), slowly decreased to ca 17.5 °C during the Allerød, reached lowest temperatures (ca 16 °C) during the Younger Dryas, and increased to ca. 18.5 °C during the Preboreal. The amplitudes of change at climate transitions (i.e. Oldest Dryas/Bølling: 3 °C, Allerød/Younger Dryas: 1.5 °C, and Younger Dryas/Preboreal: 2.5 °C) were smaller than in the northern Alps but similar to those recorded at another site in northeastern Italy. Our results suggest that (1) Allerød temperatures were higher in the southern Alps and (2) higher during the Preboreal (1 °C) than during the Allerød. These differences might provide an explanation for the different responses of terrestrial-vegetation to late glacial and early-Holocene climatic changes in the two regions. Other sites on both sides of the Alps should be studied to confirm these two hypotheses. Article in Journal/Newspaper NGRIP Northern Sweden Utrecht University Repository |
institution |
Open Polar |
collection |
Utrecht University Repository |
op_collection_id |
ftunivutrecht |
language |
English |
topic |
Biologie Late Glacial Temperature Chironomids Vegetation dynamics Italy |
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Biologie Late Glacial Temperature Chironomids Vegetation dynamics Italy Larocque, I. Finsinger, W. Late-glacial chironomid-based temperature reconstructions for Lago Piccolo di Avigliana in the southwestern Alps (Italy) |
topic_facet |
Biologie Late Glacial Temperature Chironomids Vegetation dynamics Italy |
description |
Chironomid headcapsules were used to reconstruct late glacial and early-Holocene summer temperatures at Lago Piccolo di Avigliana (LPA). Two training sets (northern Sweden, North America) were used to infer temperatures. The reconstructed patterns of temperature change agreed well with the GRIP and NGRIP δ18O records. Inferred temperatures were high during the Bølling (ca 19 °C), slowly decreased to ca 17.5 °C during the Allerød, reached lowest temperatures (ca 16 °C) during the Younger Dryas, and increased to ca. 18.5 °C during the Preboreal. The amplitudes of change at climate transitions (i.e. Oldest Dryas/Bølling: 3 °C, Allerød/Younger Dryas: 1.5 °C, and Younger Dryas/Preboreal: 2.5 °C) were smaller than in the northern Alps but similar to those recorded at another site in northeastern Italy. Our results suggest that (1) Allerød temperatures were higher in the southern Alps and (2) higher during the Preboreal (1 °C) than during the Allerød. These differences might provide an explanation for the different responses of terrestrial-vegetation to late glacial and early-Holocene climatic changes in the two regions. Other sites on both sides of the Alps should be studied to confirm these two hypotheses. |
format |
Article in Journal/Newspaper |
author |
Larocque, I. Finsinger, W. |
author_facet |
Larocque, I. Finsinger, W. |
author_sort |
Larocque, I. |
title |
Late-glacial chironomid-based temperature reconstructions for Lago Piccolo di Avigliana in the southwestern Alps (Italy) |
title_short |
Late-glacial chironomid-based temperature reconstructions for Lago Piccolo di Avigliana in the southwestern Alps (Italy) |
title_full |
Late-glacial chironomid-based temperature reconstructions for Lago Piccolo di Avigliana in the southwestern Alps (Italy) |
title_fullStr |
Late-glacial chironomid-based temperature reconstructions for Lago Piccolo di Avigliana in the southwestern Alps (Italy) |
title_full_unstemmed |
Late-glacial chironomid-based temperature reconstructions for Lago Piccolo di Avigliana in the southwestern Alps (Italy) |
title_sort |
late-glacial chironomid-based temperature reconstructions for lago piccolo di avigliana in the southwestern alps (italy) |
publishDate |
2008 |
url |
https://dspace.library.uu.nl/handle/1874/31283 |
genre |
NGRIP Northern Sweden |
genre_facet |
NGRIP Northern Sweden |
op_relation |
0031-0182 https://dspace.library.uu.nl/handle/1874/31283 |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1772184699938013184 |