CGRG Bibliography of Canadian Geomorphology
Search Results
Author : Fergusson, A., and Hills, L.V.
Date : 1985
Title : Part 2: A Palynological Record, Upper Elk Creek Valley, British Columbia.
Publication : Syllogeus
Issue : 55:
Page(s) : 355-369
Abstract
Sediments from a bog in the upper Elk valley, British Columbia have yielded a pollen profile extending back at least 13,500 years. The profile is subdivided into five pollen zones. Zone 1 (coldest) is interpreted to represent a Betula-Artemesia sagebrush shrub tundra with Salix, Alnus, Shepherdia, chenopods, minor heath and Equisetum. Zone II, dominated by Picea and Abies with Pinus increasing in the upper levels, represents replacement of the tundra by coniferous forest. Zone III, characterized by high Pinus, is interpreted to represent movement of this conifer into the area. A decrease in the pine to spruce plus fir ratios in Subzone 3a is inferred to indicate establishment of climax spruce-fir forest. Zone IV is interpreted to indicate subclimax forest due to fire. Increases in Douglas fir points to continued upslope movement of the vegetation. Zone V (youngest), characterized by an overall decrease in the pine to spruce plus fir ratios and a decrease in Douglas fir, is interpreted to indicate a cooler/moister climate than that of the preceding zone.
Bibliography of Canadian Geomorphology