CGRG Bibliography of Canadian Geomorphology
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Author : Begin, C.; Michaud, Y.; and Archambault, S.
Date : 2001.
Title : Tree-ring evidence of recent climate changes in the Mackenzie Basin, Northwest Territories.
Publication : The Physical Environment of the Mackenzie Valley: a Baseline for the Assessment of Environmental Change, Edited by: L.D. Dyke and G.R. Brooks. Geological Survey of Canada, Bulletin
Issue : 547:
Page(s) : 65-77.
Abstract
Three long-term climate reconstructions based on tree-ring analysis for the boreal and forest tundra biozones in the Mackenzie valley are presented. The northernmost site (Eskimo Lakes site) provides the longest tree ring chronology, covering the period of 1172-1991, while the boreal sites (Mountain River) span the last five hundred years. Even though sampled sites correspond to different environments and are separated by hundreds of kilometres, they show similarities in long-term climatic trends. The period known as the "Medieval Warm Period" was follow by a long period of cold, dry conditions between 1330 and the early 1900s. This suppressed growth period, corresponding to the "Little Ice Age", was briefly interrupted by milder conditions during the first half of the sixteenth century. Finally, all tree-ring chronologies show a increasing growth at the beginning of the twentieth century.
Bibliography of Canadian Geomorphology