CGRG Bibliography of Canadian Geomorphology
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Author : Gajewski, K
Date : 1991
Title : Représentation pollinique actuelle a la limite desarbres au Nouveau-Québec
Publication : Canadian Journal of Earth Sciences
Issue : 28(4):
Page(s) : 643-648
Abstract
Modern pollen spectra from a series of lakes in northwestern Quebec reflect the major vegetation zones of the forest-tundra transition from latitude 55-degrees-N to 59-degrees-N. Shrub tundra samples are dominated by Betula and herb pollen, whereas Picea percentages are between 10 and 20%. Lichen woodland samples can contain over 60% Picea, with Betula and Alnus crispa each less than 20%. Pollen assemblages from the shrub subzone of the forest-tundra resemble those of the shrub tundra, while those from the forest subzone resemble lichen woodland samples. Maximum percentages of Alnus crispa are found in the forest-tundra. Classification of the samples using cluster analysis and an ordination by principal coordinates analysis suggest that densely and sparsely forested regions can be discriminated.
Bibliography of Canadian Geomorphology