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Science 24 December 1982:
Vol. 218. no. 4579, pp. 1305 - 1307
DOI: 10.1126/science.218.4579.1305
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Articles

Pollen and Lignin Records of Late Quaternary Vegetation, Lake Washington

ESTELLA B. LEOPOLD 1, RUDY NICKMANN 1, JOHN I. HEDGES 2, and JOHN R. ERTEL 2

1 Quaternary Research Center, University of Washington, Seattle 98195
2 School of Oceanography, University of Washington

Analyses of lignin oxidation products and pollen for an 11-meter core from Lake Washington provide independent but similar reconstructions of the late Quaternary vegetation in the Puget Lowland. An exception is in sediments of the late Pleistocene where pollen percentages and influx values suggest conifer forest whereas lignin compositions suggest a treeless source region. This dissimilarity appears to result from different major provenances: eolian transport of pollen to the lake from adjacent or downstream drainage basins as opposed to fluvial transport of lignified plant debris only from the Lake Washington drainage basin.

Submitted on August 9, 1982
Revised on October 22, 1982


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