Anthropogenic versus climatic control in a high-resolution 1500-year chironomid stratigraphy from a southwestern Greenland lake
Abstract We performed a high-resolution study of chironomid assemblages in a sediment core retrieved from Lake Igaliku in southern Greenland. The well-dated core is located within the former Norse Eastern Settlement and covered the last 1500 yr. The comparison of chironomid stratigraphy (PCA axis sc...
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Cambridge University Press (CUP)
2014
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crcambridgeupr:10.1016/j.yqres.2014.01.004 2024-06-23T07:50:32+00:00 Anthropogenic versus climatic control in a high-resolution 1500-year chironomid stratigraphy from a southwestern Greenland lake Millet, Laurent Massa, Charly Bichet, Vincent Frossard, Victor Belle, Simon Gauthier, Emilie 2014 http://dx.doi.org/10.1016/j.yqres.2014.01.004 http://api.elsevier.com/content/article/PII:S0033589414000076?httpAccept=text/xml http://api.elsevier.com/content/article/PII:S0033589414000076?httpAccept=text/plain https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033589400001848 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Quaternary Research volume 81, issue 2, page 193-202 ISSN 0033-5894 1096-0287 journal-article 2014 crcambridgeupr https://doi.org/10.1016/j.yqres.2014.01.004 2024-06-05T04:04:28Z Abstract We performed a high-resolution study of chironomid assemblages in a sediment core retrieved from Lake Igaliku in southern Greenland. The well-dated core is located within the former Norse Eastern Settlement and covered the last 1500 yr. The comparison of chironomid stratigraphy (PCA axis scores) with instrumental temperature data, land use history and organic matter in the sediment over the last 140 yr suggested that the primary changes in chironomid fauna in 1988 ± 2 yr were driven by the shift to modern agriculture in the catchment. This unprecedented change in chironomid fauna was most likely triggered by a shift in in-lake processes. Within the instrumental period, subtle variations in the chironomid assemblages that occurred before 1988 ± 2 yr were significantly correlated with summer temperatures even in times of traditional extensive sheep farming in the catchment. The relevance of the chironomid-derived climate signal over the last 1500 yr was supported by its good concordance with previous studies in west Greenland and in the Arctic. The chironomid assemblage therefore appeared to be a valuable proxy for climate changes within the Norse colony area. Synchronous changes in Norse diet and chironomid-reconstructed climate give new insights into the interplay of Norse society with climate. Article in Journal/Newspaper Arctic Greenland Igaliku Cambridge University Press Arctic Greenland Igaliku ENVELOPE(-45.421,-45.421,60.988,60.988) Quaternary Research 81 2 193 202 |
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Open Polar |
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Cambridge University Press |
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crcambridgeupr |
language |
English |
description |
Abstract We performed a high-resolution study of chironomid assemblages in a sediment core retrieved from Lake Igaliku in southern Greenland. The well-dated core is located within the former Norse Eastern Settlement and covered the last 1500 yr. The comparison of chironomid stratigraphy (PCA axis scores) with instrumental temperature data, land use history and organic matter in the sediment over the last 140 yr suggested that the primary changes in chironomid fauna in 1988 ± 2 yr were driven by the shift to modern agriculture in the catchment. This unprecedented change in chironomid fauna was most likely triggered by a shift in in-lake processes. Within the instrumental period, subtle variations in the chironomid assemblages that occurred before 1988 ± 2 yr were significantly correlated with summer temperatures even in times of traditional extensive sheep farming in the catchment. The relevance of the chironomid-derived climate signal over the last 1500 yr was supported by its good concordance with previous studies in west Greenland and in the Arctic. The chironomid assemblage therefore appeared to be a valuable proxy for climate changes within the Norse colony area. Synchronous changes in Norse diet and chironomid-reconstructed climate give new insights into the interplay of Norse society with climate. |
format |
Article in Journal/Newspaper |
author |
Millet, Laurent Massa, Charly Bichet, Vincent Frossard, Victor Belle, Simon Gauthier, Emilie |
spellingShingle |
Millet, Laurent Massa, Charly Bichet, Vincent Frossard, Victor Belle, Simon Gauthier, Emilie Anthropogenic versus climatic control in a high-resolution 1500-year chironomid stratigraphy from a southwestern Greenland lake |
author_facet |
Millet, Laurent Massa, Charly Bichet, Vincent Frossard, Victor Belle, Simon Gauthier, Emilie |
author_sort |
Millet, Laurent |
title |
Anthropogenic versus climatic control in a high-resolution 1500-year chironomid stratigraphy from a southwestern Greenland lake |
title_short |
Anthropogenic versus climatic control in a high-resolution 1500-year chironomid stratigraphy from a southwestern Greenland lake |
title_full |
Anthropogenic versus climatic control in a high-resolution 1500-year chironomid stratigraphy from a southwestern Greenland lake |
title_fullStr |
Anthropogenic versus climatic control in a high-resolution 1500-year chironomid stratigraphy from a southwestern Greenland lake |
title_full_unstemmed |
Anthropogenic versus climatic control in a high-resolution 1500-year chironomid stratigraphy from a southwestern Greenland lake |
title_sort |
anthropogenic versus climatic control in a high-resolution 1500-year chironomid stratigraphy from a southwestern greenland lake |
publisher |
Cambridge University Press (CUP) |
publishDate |
2014 |
url |
http://dx.doi.org/10.1016/j.yqres.2014.01.004 http://api.elsevier.com/content/article/PII:S0033589414000076?httpAccept=text/xml http://api.elsevier.com/content/article/PII:S0033589414000076?httpAccept=text/plain https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033589400001848 |
long_lat |
ENVELOPE(-45.421,-45.421,60.988,60.988) |
geographic |
Arctic Greenland Igaliku |
geographic_facet |
Arctic Greenland Igaliku |
genre |
Arctic Greenland Igaliku |
genre_facet |
Arctic Greenland Igaliku |
op_source |
Quaternary Research volume 81, issue 2, page 193-202 ISSN 0033-5894 1096-0287 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1016/j.yqres.2014.01.004 |
container_title |
Quaternary Research |
container_volume |
81 |
container_issue |
2 |
container_start_page |
193 |
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202 |
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1802641434009927680 |