Environmental and climate reconstruction of the late-glacial-Holocene transition from a lake sediment sequence in Aubrac, French Massif Central : Chironomid and diatom evidence
The analysis of fossil chironomid and diatom assemblages from a sedimentary record from Les Roustières peat bog (Massif Central, France, 1196 m asl) allows the reconstruction of past environmental and climate changes during the late-glacial and early Holocene. Chironomid assemblages showed that the...
Published in: | Palaeogeography, Palaeoclimatology, Palaeoecology |
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Format: | Article in Journal/Newspaper |
Language: | English |
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Online Access: | https://lup.lub.lu.se/record/09f2f35b-2ff7-4840-a0d6-8585c560e109 https://doi.org/10.1016/j.palaeo.2016.08.039 |
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ftulundlup:oai:lup.lub.lu.se:09f2f35b-2ff7-4840-a0d6-8585c560e109 2024-05-19T07:36:34+00:00 Environmental and climate reconstruction of the late-glacial-Holocene transition from a lake sediment sequence in Aubrac, French Massif Central : Chironomid and diatom evidence Gandouin, E. Rioual, P. Pailles, C. Brooks, S. J. Ponel, P. Guiter, F. Djamali, M. Andrieu-Ponel, V. Birks, H. J B Leydet, M. Belkacem, D. Haas, J. N. Van der Putten, N. de Beaulieu, J. L. 2016-11-01 https://lup.lub.lu.se/record/09f2f35b-2ff7-4840-a0d6-8585c560e109 https://doi.org/10.1016/j.palaeo.2016.08.039 eng eng Elsevier https://lup.lub.lu.se/record/09f2f35b-2ff7-4840-a0d6-8585c560e109 http://dx.doi.org/10.1016/j.palaeo.2016.08.039 scopus:84989830861 wos:000385599900024 Palaeogeography, Palaeoclimatology, Palaeoecology; 461, pp 292-309 (2016) ISSN: 0031-0182 Geology Corynocera ambigua Palaeolimnology Past aquatic ecosystem Subfossil insects Temperature reconstruction Western Europe contributiontojournal/article info:eu-repo/semantics/article text 2016 ftulundlup https://doi.org/10.1016/j.palaeo.2016.08.039 2024-04-23T23:34:34Z The analysis of fossil chironomid and diatom assemblages from a sedimentary record from Les Roustières peat bog (Massif Central, France, 1196 m asl) allows the reconstruction of past environmental and climate changes during the late-glacial and early Holocene. Chironomid assemblages showed that the infilling of the palaeolake had commenced during the Oldest Dryas (GS-2b) as suggested by the rapid decrease in chironomid species associated with the cold and deep zone of lakes and by their replacement by littoral and eutrophic taxa. Quantitative July temperature reconstructions, based on the chironomid data, suggest that mean July air temperature (Tjul) ranged between 6 °C and 11 °C at the termination of the Oldest Dryas period (GS-2b). Climate began to warm at the start of the Bølling period (GI-1e), between 15,000 and 14,800 cal yr BP, with a rise in Tjul of about 4 °C. This climate warming is contemporaneous with lake eutrophication as suggested by diatoms and chironomids. Maximum temperatures of 13–14 °C were reached around 13,600 cal yr BP during the Allerød period (GI-1c–GI-1a). The Younger Dryas period (GS-1) is marked by a return to cold conditions with Tjul of about 10 °C during a first phase, then 13 °C in its terminal part. A probable increase in the duration of the ice-cover may have favoured arctic and alpine diatom species. The early-Holocene climate improvement is marked by a rise in Tjul of about 3 °C. Article in Journal/Newspaper Arctic Lund University Publications (LUP) Palaeogeography, Palaeoclimatology, Palaeoecology 461 292 309 |
institution |
Open Polar |
collection |
Lund University Publications (LUP) |
op_collection_id |
ftulundlup |
language |
English |
topic |
Geology Corynocera ambigua Palaeolimnology Past aquatic ecosystem Subfossil insects Temperature reconstruction Western Europe |
spellingShingle |
Geology Corynocera ambigua Palaeolimnology Past aquatic ecosystem Subfossil insects Temperature reconstruction Western Europe Gandouin, E. Rioual, P. Pailles, C. Brooks, S. J. Ponel, P. Guiter, F. Djamali, M. Andrieu-Ponel, V. Birks, H. J B Leydet, M. Belkacem, D. Haas, J. N. Van der Putten, N. de Beaulieu, J. L. Environmental and climate reconstruction of the late-glacial-Holocene transition from a lake sediment sequence in Aubrac, French Massif Central : Chironomid and diatom evidence |
topic_facet |
Geology Corynocera ambigua Palaeolimnology Past aquatic ecosystem Subfossil insects Temperature reconstruction Western Europe |
description |
The analysis of fossil chironomid and diatom assemblages from a sedimentary record from Les Roustières peat bog (Massif Central, France, 1196 m asl) allows the reconstruction of past environmental and climate changes during the late-glacial and early Holocene. Chironomid assemblages showed that the infilling of the palaeolake had commenced during the Oldest Dryas (GS-2b) as suggested by the rapid decrease in chironomid species associated with the cold and deep zone of lakes and by their replacement by littoral and eutrophic taxa. Quantitative July temperature reconstructions, based on the chironomid data, suggest that mean July air temperature (Tjul) ranged between 6 °C and 11 °C at the termination of the Oldest Dryas period (GS-2b). Climate began to warm at the start of the Bølling period (GI-1e), between 15,000 and 14,800 cal yr BP, with a rise in Tjul of about 4 °C. This climate warming is contemporaneous with lake eutrophication as suggested by diatoms and chironomids. Maximum temperatures of 13–14 °C were reached around 13,600 cal yr BP during the Allerød period (GI-1c–GI-1a). The Younger Dryas period (GS-1) is marked by a return to cold conditions with Tjul of about 10 °C during a first phase, then 13 °C in its terminal part. A probable increase in the duration of the ice-cover may have favoured arctic and alpine diatom species. The early-Holocene climate improvement is marked by a rise in Tjul of about 3 °C. |
format |
Article in Journal/Newspaper |
author |
Gandouin, E. Rioual, P. Pailles, C. Brooks, S. J. Ponel, P. Guiter, F. Djamali, M. Andrieu-Ponel, V. Birks, H. J B Leydet, M. Belkacem, D. Haas, J. N. Van der Putten, N. de Beaulieu, J. L. |
author_facet |
Gandouin, E. Rioual, P. Pailles, C. Brooks, S. J. Ponel, P. Guiter, F. Djamali, M. Andrieu-Ponel, V. Birks, H. J B Leydet, M. Belkacem, D. Haas, J. N. Van der Putten, N. de Beaulieu, J. L. |
author_sort |
Gandouin, E. |
title |
Environmental and climate reconstruction of the late-glacial-Holocene transition from a lake sediment sequence in Aubrac, French Massif Central : Chironomid and diatom evidence |
title_short |
Environmental and climate reconstruction of the late-glacial-Holocene transition from a lake sediment sequence in Aubrac, French Massif Central : Chironomid and diatom evidence |
title_full |
Environmental and climate reconstruction of the late-glacial-Holocene transition from a lake sediment sequence in Aubrac, French Massif Central : Chironomid and diatom evidence |
title_fullStr |
Environmental and climate reconstruction of the late-glacial-Holocene transition from a lake sediment sequence in Aubrac, French Massif Central : Chironomid and diatom evidence |
title_full_unstemmed |
Environmental and climate reconstruction of the late-glacial-Holocene transition from a lake sediment sequence in Aubrac, French Massif Central : Chironomid and diatom evidence |
title_sort |
environmental and climate reconstruction of the late-glacial-holocene transition from a lake sediment sequence in aubrac, french massif central : chironomid and diatom evidence |
publisher |
Elsevier |
publishDate |
2016 |
url |
https://lup.lub.lu.se/record/09f2f35b-2ff7-4840-a0d6-8585c560e109 https://doi.org/10.1016/j.palaeo.2016.08.039 |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Palaeogeography, Palaeoclimatology, Palaeoecology; 461, pp 292-309 (2016) ISSN: 0031-0182 |
op_relation |
https://lup.lub.lu.se/record/09f2f35b-2ff7-4840-a0d6-8585c560e109 http://dx.doi.org/10.1016/j.palaeo.2016.08.039 scopus:84989830861 wos:000385599900024 |
op_doi |
https://doi.org/10.1016/j.palaeo.2016.08.039 |
container_title |
Palaeogeography, Palaeoclimatology, Palaeoecology |
container_volume |
461 |
container_start_page |
292 |
op_container_end_page |
309 |
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1799475706265075712 |