The impact of Dansgaard–Oeschger cycles on the loessic environment and malacofauna of Nussloch (Germany) during the Upper Weichselian
Abstract A loess sequence has been sampled continuously at high resolution in Nussloch (Rhine Valley, Germany) for malacological and grain-size analyses between ca. 34 and 20 ka. Molluscan abundance and richness, percentage in hygrophilous species and grain-size index show cyclical variations relate...
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Cambridge University Press (CUP)
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crcambridgeupr:10.1016/j.yqres.2008.02.010 2024-06-09T07:46:44+00:00 The impact of Dansgaard–Oeschger cycles on the loessic environment and malacofauna of Nussloch (Germany) during the Upper Weichselian Moine, Olivier Rousseau, Denis-Didier Antoine, Pierre 2008 http://dx.doi.org/10.1016/j.yqres.2008.02.010 http://api.elsevier.com/content/article/PII:S0033589408000227?httpAccept=text/xml http://api.elsevier.com/content/article/PII:S0033589408000227?httpAccept=text/plain https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033589400005305 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Quaternary Research volume 70, issue 1, page 91-104 ISSN 0033-5894 1096-0287 journal-article 2008 crcambridgeupr https://doi.org/10.1016/j.yqres.2008.02.010 2024-05-15T13:16:15Z Abstract A loess sequence has been sampled continuously at high resolution in Nussloch (Rhine Valley, Germany) for malacological and grain-size analyses between ca. 34 and 20 ka. Molluscan abundance and richness, percentage in hygrophilous species and grain-size index show cyclical variations related to the lithological loess–gley alternation. Major molluscan abundance maxima were triggered by temperature increases through an enhancement of the reproduction cycle, whereas cyclical richness fluctuations and percentage in hygrophilous species reflect variations in local humidity and changes in the environmental mosaic. Malacological parameters allow the distinction of four environmental phases organised in cyclical successions correlated with most of the loess–gley doublets. The correlation of the grain-size index of the Nussloch loess sequence with the dust content of the GRIP ice core demonstrates the synchronicity of major molluscan abundance maxima and δ 18 O increases characterising temperature increases during Dansgaard–Oeschger interstades. A schematic model is proposed to link the North Atlantic Dansgaard–Oeschger climatic oscillations with local environmental changes indicated by both malacofauna and pedostratigraphy. This malacological study of the Nussloch loess sequence thus provides new information about the response of terrestrial loessic palaeoenvironments to millennial-timescale climatic fluctuations during the Upper Weichselian (∼ marine isotope stage 2 (MIS 2) and end of MIS 3). Article in Journal/Newspaper ice core North Atlantic Cambridge University Press Doublets ENVELOPE(98.667,98.667,-66.417,-66.417) Doublets The ENVELOPE(98.667,98.667,-66.417,-66.417) Quaternary Research 70 1 91 104 |
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Open Polar |
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Cambridge University Press |
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crcambridgeupr |
language |
English |
description |
Abstract A loess sequence has been sampled continuously at high resolution in Nussloch (Rhine Valley, Germany) for malacological and grain-size analyses between ca. 34 and 20 ka. Molluscan abundance and richness, percentage in hygrophilous species and grain-size index show cyclical variations related to the lithological loess–gley alternation. Major molluscan abundance maxima were triggered by temperature increases through an enhancement of the reproduction cycle, whereas cyclical richness fluctuations and percentage in hygrophilous species reflect variations in local humidity and changes in the environmental mosaic. Malacological parameters allow the distinction of four environmental phases organised in cyclical successions correlated with most of the loess–gley doublets. The correlation of the grain-size index of the Nussloch loess sequence with the dust content of the GRIP ice core demonstrates the synchronicity of major molluscan abundance maxima and δ 18 O increases characterising temperature increases during Dansgaard–Oeschger interstades. A schematic model is proposed to link the North Atlantic Dansgaard–Oeschger climatic oscillations with local environmental changes indicated by both malacofauna and pedostratigraphy. This malacological study of the Nussloch loess sequence thus provides new information about the response of terrestrial loessic palaeoenvironments to millennial-timescale climatic fluctuations during the Upper Weichselian (∼ marine isotope stage 2 (MIS 2) and end of MIS 3). |
format |
Article in Journal/Newspaper |
author |
Moine, Olivier Rousseau, Denis-Didier Antoine, Pierre |
spellingShingle |
Moine, Olivier Rousseau, Denis-Didier Antoine, Pierre The impact of Dansgaard–Oeschger cycles on the loessic environment and malacofauna of Nussloch (Germany) during the Upper Weichselian |
author_facet |
Moine, Olivier Rousseau, Denis-Didier Antoine, Pierre |
author_sort |
Moine, Olivier |
title |
The impact of Dansgaard–Oeschger cycles on the loessic environment and malacofauna of Nussloch (Germany) during the Upper Weichselian |
title_short |
The impact of Dansgaard–Oeschger cycles on the loessic environment and malacofauna of Nussloch (Germany) during the Upper Weichselian |
title_full |
The impact of Dansgaard–Oeschger cycles on the loessic environment and malacofauna of Nussloch (Germany) during the Upper Weichselian |
title_fullStr |
The impact of Dansgaard–Oeschger cycles on the loessic environment and malacofauna of Nussloch (Germany) during the Upper Weichselian |
title_full_unstemmed |
The impact of Dansgaard–Oeschger cycles on the loessic environment and malacofauna of Nussloch (Germany) during the Upper Weichselian |
title_sort |
impact of dansgaard–oeschger cycles on the loessic environment and malacofauna of nussloch (germany) during the upper weichselian |
publisher |
Cambridge University Press (CUP) |
publishDate |
2008 |
url |
http://dx.doi.org/10.1016/j.yqres.2008.02.010 http://api.elsevier.com/content/article/PII:S0033589408000227?httpAccept=text/xml http://api.elsevier.com/content/article/PII:S0033589408000227?httpAccept=text/plain https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033589400005305 |
long_lat |
ENVELOPE(98.667,98.667,-66.417,-66.417) ENVELOPE(98.667,98.667,-66.417,-66.417) |
geographic |
Doublets Doublets The |
geographic_facet |
Doublets Doublets The |
genre |
ice core North Atlantic |
genre_facet |
ice core North Atlantic |
op_source |
Quaternary Research volume 70, issue 1, page 91-104 ISSN 0033-5894 1096-0287 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1016/j.yqres.2008.02.010 |
container_title |
Quaternary Research |
container_volume |
70 |
container_issue |
1 |
container_start_page |
91 |
op_container_end_page |
104 |
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1801376708492787712 |