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Science 20 June 1980:
Vol. 208. no. 4450, pp. 1375 - 1377
DOI: 10.1126/science.208.4450.1375
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Articles

Arctic Steppe-Tundra: A Yukon Perspective

L. C. CWYNAR 1 and J. C. RITCHIE 1

1 Division of Life Sciences, Scarborough College, University of Toronto, Toronto M1C 1A4, Canada

The first reliable, securely dated full- and late-glacial pollen stratigraphy from Eastern Beringia forces the rejection of the widely held hypothesis of a steppetundra or grassland associated with extinct vertebrates and early humans. The arctic-alpine fossil flora and low pollen influx suggest a sparse tundra similar to modern herb fell-field vegetation.

Submitted on January 2, 1980
Revised on March 10, 1980


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