Ecological thresholds and patterns of millennial-scale climate variability; the response of vegetation in Greece during the last glacial period

The regional expression of millennial-scale climate variability during the last glacial is examined with particular reference to the vegetation response in Greece. Inspection of three pollen records from contrasting bioclimatic areas suggests that differences in the magnitude of cold events as recog...

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Bibliographic Details
Published in:Geology (Boulder) 2004-02, Vol.32 (2), p.109-112
Main Authors: Tzedakis, P. C, Frogley, M. R, Lawson, I. T, Preece, R. C, Cacho, I, de Abreu, L
Format: Article
Language:English
Subjects:
Alboran Sea
Cenozoic
Climate
climate change
cores
correlation
Ecology
Europe
Foraminifera
geochemistry
GISP2
glacial environment
Glaciers
Globigerinacea
Greece
habitat
Invertebrata
isotope ratios
isotopes
last glacial maximum
Mediterranean region
Mediterranean Sea
microfossils
miospores
Neogloboquadrina
Neogloboquadrina pachyderma
O-18/O-16
oxygen
paleoclimatology
paleoecology
paleotemperature
palynomorphs
Pindus Mountains
Pleistocene
pollen
pollen analysis
Protista
Quaternary
Quaternary geology
regional patterns
Rotaliina
sea-surface temperature
Southern Europe
stable isotopes
terrestrial environment
upper Pleistocene
Variables
vegetation
West Mediterranean
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Summary:The regional expression of millennial-scale climate variability during the last glacial is examined with particular reference to the vegetation response in Greece. Inspection of three pollen records from contrasting bioclimatic areas suggests that differences in the magnitude of cold events as recognized in the North Atlantic and western Mediterranean are expressed in terms of tree population changes only in areas with a range of favorable habitats. By contrast, records from sites where populations approach their tolerance threshold do not appear to resolve differences in the amplitude of the climate oscillations. Understanding the importance of local factors in modulating the biological response to climate change is critical when attempting to establish the spatial pattern of millennial variability.
ISSN:0091-7613
1943-2682
DOI:10.1130/G20118.1