气候变化领域集成服务门户(CCPortal): Palaeoecological response to Greenlandian (Early Holocene) climatic changes: Insight from an abandoned-channel sequence of the Meuse River at Autrecourt-et-Pourron (Ardennes; France)

CCPortal

DOI	10.1016/j.palaeo.2020.109937
	Palaeoecological response to Greenlandian (Early Holocene) climatic changes: Insight from an abandoned-channel sequence of the Meuse River at Autrecourt-et-Pourron (Ardennes; France)
	Schaal C.; Naton H.-G.; Ruffaldi P.; Granai S.; Jamet G.; Brun O.; Gauthier É.
发表日期	2020
ISSN	0031-0182
卷号	557
英文摘要	A Greenlandian (Early Holocene) palaeochannel of the Meuse River is described from Autrecourt-et-Pourron in the Ardennes region of northern France. During the Younger Dryas, fluvial deposits represent a high-energy, sinuous palaeochannel, but at the onset of the Holocene, progressive channel abandonment resulted in the establishment of a low-energy meandering river system. Well-dated studies using palynology, carpology, malacology and geomorphology reveal a Greenlandian succession of changes in fluvial dynamics and vegetation. Between 11,700 and 11,400 cal yr BP, warmer temperatures led to the development of a birch community (Betula sp.) within an open grassland, dominated by herbaceous cold-adapted plants (Linum alpinum, Plantago montana, Artemisia sp., Juniperus sp.). Between 11,400 and 11,100 cal yr BP, the river and the vegetation dynamics reflected two short-term climate events. Around 11,400 cal yr BP, the palaeochannel became separated from the active channels of the Meuse River but remained dominated by waterlogged wetlands. This cold and wet phase represents the “Preboreal Oscillation” also referred as the “11.4 ka event”. Around 11,300 cal yr BP, the records suggest that fire frequency increased close to the channel, and may indicate a dry episode that reflects a sharp, short-lived rise in temperature. Between 11,100 and 10,700 cal yr BP (Late Preboreal phase), the channel received flood deposits again. Salix and helophytes developed while Populus colonised the riverbank. From 10,700 cal yr BP, at the beginning of the Boreal phase, the palaeochannel was finally abandoned and dense temperate woodland with Corylus avellana and Quercus spp. became established. Based on its high chronological resolution, Autrecourt-et-Pourron represents a key locality in north-western Europe to investigate environmental change in connection with Early Holocene short climate variations. In addition, the results highlight the valuable contribution of carpological analyses in improving the spatial resolution of reconstructions of vegetation cover. © 2020 Elsevier B.V.
英文关键词	Multiproxy investigation; Palaeochannel; Palaeoenvironment; Plant macrofossils; Preboreal; Short climate variation
语种	英语
scopus关键词	climate variation; dominance; environmental change; fluvial deposit; grassland; high temperature; Holocene; paleoecology; palynology; plant community; river bank; river channel; river system; vegetation cover; vegetation dynamics; waterlogging; Younger Dryas; Ardennes [Grand Est]; France; France; Grand Est; Meuse River; Artemisia; Betula sp.; Corylus avellana; Juniperus; Linum; Plantago; Populus; Quercus; Salix
来源期刊	Palaeogeography, Palaeoclimatology, Palaeoecology
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/150359
作者单位	Chrono-environnement Laboratory CNRS UMR6249, Université de Bourgogne-Franche-Comté, 16 route de Gray, Besançon, 25000, France; GéoArchÉon SARL, 30 rue de la Victoire, Viéville-sous-les-Côtes, France; Equipe d'Ethnologie préhistorique UMR 7041, Arscan Maison de l'archéologie et de l'Ethnologie 21 allée de l'Université, Nanterre, Cedex 92023, France; Laboratoire de Géographie Physique : environnements quaternaires et actuels, UMR 8591 CNRS-Univ. Paris 1-UPEC, 1 place Aristide Briand, Meudon, Cedex 92195, France; Conseil Départemental des Ardennes, Service Archéologique, Hôtel du Département CS 20001, Charleville-Mézières, 08011, France
推荐引用方式 GB/T 7714	Schaal C.,Naton H.-G.,Ruffaldi P.,et al. Palaeoecological response to Greenlandian (Early Holocene) climatic changes: Insight from an abandoned-channel sequence of the Meuse River at Autrecourt-et-Pourron (Ardennes; France)[J],2020,557.
APA	Schaal C..,Naton H.-G..,Ruffaldi P..,Granai S..,Jamet G..,...&Gauthier É..(2020).Palaeoecological response to Greenlandian (Early Holocene) climatic changes: Insight from an abandoned-channel sequence of the Meuse River at Autrecourt-et-Pourron (Ardennes; France).Palaeogeography, Palaeoclimatology, Palaeoecology,557.
MLA	Schaal C.,et al."Palaeoecological response to Greenlandian (Early Holocene) climatic changes: Insight from an abandoned-channel sequence of the Meuse River at Autrecourt-et-Pourron (Ardennes; France)".Palaeogeography, Palaeoclimatology, Palaeoecology 557(2020).