globalchange  > 过去全球变化的重建
DOI: 10.1016/j.palaeo.2016.08.039
论文题名:
Environmental and climate reconstruction of the late-glacial-Holocene transition from a lake sediment sequence in Aubrac, French Massif Central: Chironomid and diatom evidence
作者: 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.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2016
卷: 461
起始页码: 292
结束页码: 309
语种: 英语
英文关键词: Corynocera ambigua ; Palaeolimnology ; Past aquatic ecosystem ; Subfossil insects ; Temperature reconstruction ; Western Europe
英文摘要: 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. © 2016 Elsevier B.V.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/68252
Appears in Collections:过去全球变化的重建

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作者单位: Aix Marseille Univ, Avignon Univ, CNRS, IRD, IMBE, Technopôle Arbois Méditerranée, Bât. Villemin - BP 80, Aix-en-Provence Cedex 04, France; Key Laboratory of Cenozoic Geology and Environment, Institute of Geology and Geophysics, Chinese Academy of Sciences, P.O. Box 9825, Beijing, China; Aix Marseille Univ, CNRS, Centre Européen de Recherche et d'Enseignement des Géosciences de l'Environnement, Technopôle Arbois Méditerranée - BP 80, Aix-en-Provence Cedex 04, France; Department of Life Sciences, Natural History Museum, Cromwell Road, London, United Kingdom; Department of Biology and Bjerknes Centre for Climate Research, University of Bergen, PO Box 7803, Bergen, Norway; University of Innsbruck, Institute of Botany, Sternwartestraße 15, Innsbruck, Austria; Lund University, Faculty of Science, Box 118, Lund, SE, Sweden; Environmental Change Research Centre, University College London, London, United Kingdom

Recommended Citation:
Gandouin E.,Rioual P.,Pailles C.,et al. Environmental and climate reconstruction of the late-glacial-Holocene transition from a lake sediment sequence in Aubrac, French Massif Central: Chironomid and diatom evidence[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2016-01-01,461
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