A survey of modern pollen and vegetation along an altitudinal transect in southern Georgia, Caucasus region

This paper describes the pollen representation of vegetation patterns along an altitudinal transect in the South Caucasus region. Surface sediments from eight small- to medium-sized lakes and wetlands were analysed for modern pollen, and the results analysed numerically using detrended correspondenc...

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Bibliographic Details
Published inReview of palaeobotany and palynology Vol. 129; no. 4; pp. 229 - 250
Main Authors Connor, Simon E, Thomas, Ian, Kvavadze, Eliso V, Arabuli, Giorgi J, Avakov, Genia S, Sagona, Antonio
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.06.2004
Subjects
Caucasus
climate
numerical analysis
pollen
tree-lines
vegetation
vegetation
tree-lines
climate
pollen
numerical analysis
Caucasus
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Summary:This paper describes the pollen representation of vegetation patterns along an altitudinal transect in the South Caucasus region. Surface sediments from eight small- to medium-sized lakes and wetlands were analysed for modern pollen, and the results analysed numerically using detrended correspondence analysis (DCA) and dichotomised ordination (TWINSPAN). Pollen spectra from the semidesert region have a clear palynological signal characterised by an abundance of Chenopodiaceae. Differentiation of oak forest, upper tree-line and subalpine communities is more difficult: all are dominated by arboreal pollen (AP) types. The authors propose a number of indicator pollen types and pollen threshold values that may assist in detecting tree-line variations and deforestation events in Holocene pollen diagrams.
ISSN:0034-6667
1879-0615
DOI:10.1016/j.revpalbo.2004.02.003