A 14,000-yr paleoenvironmental record from Windmill Lake, central Alaska: late-glacial and Holocene vegetation in the Alaska Range
Bigelow, Nancy H. and Edwards, Mary E. (2001) A 14,000-yr paleoenvironmental record from Windmill Lake, central Alaska: late-glacial and Holocene vegetation in the Alaska Range. Quaternary Science Reviews, 20, (1-3), 203-215. (doi:10.1016/S0277-3791(00)00122-0).
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A 14,000 yr high-resolution pollen and lake-level record from Windmill Lake in central Alaska provides new evidence for the Late
Pleistocene and Holocene paleoenvironments of this region. At 14,000 14Cyr BP, sparse herb tundra and low lake-levels indicate
a cold, arid environment. About 11,800 14Cyr BP, the vegetation abruptly shifted to a shrub tundra and lake-levels increased,
suggesting warmer and more mesic conditions. Ca 10,500}10,200 14Cyr BP, herbaceous taxa increased at the expense of the shrubs,
suggesting a transient episode of climatic deterioration nearly contemporaneous with the Younger Dryas chronozone. By 8000
14Cyr BP, spruce was present in the watershed and alder grew locally by 6500 14Cyr BP. The AMS radiocarbon chronology indicates
later expansions of Betula, Picea, and Alnus than at most sites in central Alaska, which are conventionally dated.
|Subjects:||G Geography. Anthropology. Recreation > G Geography (General)
G Geography. Anthropology. Recreation > GE Environmental Sciences
G Geography. Anthropology. Recreation > GB Physical geography
|Divisions:||University Structure - Pre August 2011 > School of Geography > Environmental Processes and Change
|Date Deposited:||01 Aug 2008|
|Last Modified:||02 Mar 2012 12:51|
|Contact Email Address:||M.E.Edwards@soton.ac.uk|
|RDF:||RDF+N-Triples, RDF+N3, RDF+XML, Browse.|
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