DOI: 10.1016/j.gloplacha.2013.05.015
论文题名: Limnetic and terrestrial responses to climate change during the onset of the penultimate glacial stage in NW Greece
作者: Wilson G.P. ; Frogley M.R. ; Roucoux K.H. ; Jones T.D. ; Leng M.J. ; Lawson I.T. ; Hughes P.D.
刊名: Global and Planetary Change
ISSN: 0921-8275
出版年: 2013
卷: 107 起始页码: 213
结束页码: 225
语种: 英语
英文关键词: Carbon isotopes
; Diatoms
; Lakes
; Marine Isotope Stage 6 (MIS 6)
; Mediterranean
; Oxygen isotopes
Scopus关键词: Carbon isotopes
; Diatoms
; Marine isotope stages
; Mediterranean
; Oxygen isotopes
; Catchments
; Climate change
; Ecosystems
; Glacial geology
; Isotopes
; Phytoplankton
; Lakes
; climate change
; climate forcing
; climate oscillation
; climate variation
; lake ecosystem
; limnology
; palynology
; terrestrial ecosystem
; Greece
; Mediterranean Region
英文摘要: Long (multi-millennial), continuous lake pollen records have provided insights into terrestrial ecosystem responses to orbital- and sub-orbital-scale climate forcing. By comparison, the potential of diatoms and stable isotopes to provide additional insights into limnetic response over comparable timescales has not been explored to the same extent, particularly in the Mediterranean region, even though such proxies are known to respond sensitively and rapidly to environmental change. Here we present a 19,000-year multiproxy record of limnetic change in the Ioannina basin, NW Greece, spanning the penultimate interglacial-glacial transition and the early penultimate glacial (c. 189-170ka BP). The diatom record, the first from this interval in Southern Europe, reveals that lake conditions changed in concert with muted millennial-scale climate oscillations thought to originate in the North Atlantic, demonstrating clearly the sensitivity of diatoms to sub-orbital climate variability. Diatom and isotope-inferred changes in lake conditions coincided with the MIS 7/6 transition, whilst the new δ18O record suggests increased moisture availability in SE Europe during MIS 6.5, adding support for a Mediterranean-wide increase in precipitation. Comparison with pollen data from the same sequence demonstrates that lake and terrestrial ecosystems co-varied, with no delay in forest expansion in response to climate change during this interval. Substantial changes in lake conditions contrast with subdued changes in catchment vegetation during an 8000year-long cold interval in the early penultimate glacial. This may reflect differences in limnetic and terrestrial thresholds of response to environmental change, and perhaps also the influence of site specific factors in modulating terrestrial ecosystem response. © 2013 Elsevier B.V. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84879589810&doi=10.1016%2fj.gloplacha.2013.05.015&partnerID=40&md5=ab6ba156c493b2e0e5449c08ffcf5021
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/11181
Appears in Collections: 全球变化的国际研究计划
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作者单位: Department of Geography, University of Portsmouth, Portsmouth PO1 3HE, United Kingdom
Recommended Citation:
Wilson G.P.,Frogley M.R.,Roucoux K.H.,et al. Limnetic and terrestrial responses to climate change during the onset of the penultimate glacial stage in NW Greece[J]. Global and Planetary Change,2013-01-01,107.