DOI: 10.1016/j.quascirev.2016.12.013
Scopus记录号: 2-s2.0-85009216457
论文题名: Lateglacial-Holocene abrupt vegetation changes at Lago Trifoglietti in Calabria, Southern Italy: The setting of ecosystems in a refugial zone
作者: Beaulieu J.-L.D. ; Brugiapaglia E. ; Joannin S. ; Guiter F. ; Zanchetta G. ; Wulf S. ; Peyron O. ; Bernardo L. ; Didier J. ; Stock A. ; Rius D. ; Magny M.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2017
卷: 158 起始页码: 44
结束页码: 57
语种: 英语
英文关键词: Calabrian Mountains
; Glacial refuges
; Lago Trifoglietti
; Lake sediments
; LGI-early Holocene
; Pollen record
; Preboreal oscillation
; Tephrochronology
Scopus关键词: Ecology
; Forestry
; Lakes
; Landforms
; Vegetation
; Calabrian Mountains
; Early Holocene
; Glacial refuges
; Lago Trifoglietti
; Lake sediments
; Pollen record
; Preboreal oscillation
; Tephrochronology
; Glacial geology
; Allerod
; Bolling
; climate forcing
; coniferous forest
; deciduous forest
; interstadial
; lacustrine deposit
; late glacial
; palynology
; Pleistocene
; Preboreal
; radiocarbon dating
; refuge
; survival
; temperate forest
; tephra
; tephrochronology
; vegetation dynamics
; Younger Dryas
; Calabria
; Italy
; Mediterranean Region
; Abies
; Fagus
; Quercus
英文摘要: Retrospective science such as palaeoecology deeply depends on the preservation of archives in sensitive places. As an example, mountains of medium altitude from Mediterranean peninsulas have long been identified by biogeographers as refuges zones allowing the survival of European temperate taxa during the ice ages, but archives to validate this hypothesis are scarce, especially in Southern Italy. Here we present a new sequence from Lago Trifoglietti (1048 m a.s.l.) in the Calabrian Mountains, which covers the Late Glacial Interstadial (LGI, corresponding to the Bölling-Alleröd period in northern-central Europe) and the transition to the Holocene. The independent chronology based on seven radiocarbon dates is supported by the evidence of three tephra layers already identified in other regional sequences. During the LGI, besides the high diversity of non arboreal pollen grains, a great number of pollens of temperate forest trees are present or abundant (mostly deciduous oaks and fir). These assemblages suggest that the site was above but not far from the upper limit of diversified woodland stands. They confirm a local survival during the last glacial. The Younger Dryas is not marked by major changes, and oak percentages are even higher, suggesting a resilient expansion at lower altitude. Surprisingly the site remains above the timberline until an aridity crisis centered at 11,100 cal 14C yr PB, which is correlated with the Preboreal Oscillation (PBO). This event is immediately followed by the local settlement of a dense fir and beech forest around the lake. A comparison with other Italian key sequences aims at explaining the climate forcing factors that governed this original vegetation dynamic. Further investigations using additional proxies are needed for a more robust climate reconstruction. © 2016 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/59318
Appears in Collections: 过去全球变化的重建
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作者单位: Aix Marseille Univ, CNRS, IRD, IMBE, UMR 7263 & 237, Aix-en-Provence, France; Università degli Studi del Molise, Dipartimento di Agricoltura, Ambiente e Alimenti, Campobasso, Italy; CNRS UMR 5554, ISEM, Université de Montpellier, Montpellier, France; Dipartimento di Scienze della Terra, Università di Pisa, Italy; Senckenberg Research Institute and Natural History Museum, BIK-F, TSP6 Evolution and Climate, Frankfurt/Main, Germany; Institute of Earth Sciences, Heidelberg University, Germany; Dipartimento DiBEST, Università della Calabria, Italy; Laboratoire Chrono-Environnement UMR 6249 du CNRS, UFR des Sciences et Techniques, Besançon, France
Recommended Citation:
Beaulieu J.-L.D.,Brugiapaglia E.,Joannin S.,et al. Lateglacial-Holocene abrupt vegetation changes at Lago Trifoglietti in Calabria, Southern Italy: The setting of ecosystems in a refugial zone[J]. Quaternary Science Reviews,2017-01-01,158