Spatiotemporal distribution of light rings in subarctic black spruce, Quebec

• Published in: Canadian Journal of Forest Research
• Main Authors: Delwaide, Ann, Filion, Louise, Payette, Serge
• Format: Article in Journal/Newspaper
• Language: English
• Published: Canadian Science Publishing 1991
• Subjects: Ecology; Forestry; Global and Planetary Change; Hudson Bay; Hudson; Rivière Boniface; Subarctic
• Online Access: http://dx.doi.org/10.1139/x91-252; http://www.nrcresearchpress.com/doi/pdf/10.1139/x91-252

Numerous subfossil trees from the 13th, 14th, and 15th centuries sampled in the Rivière Boniface area (east of Hudson Bay) made it possible to extend to A.D. 1221 a previously published light-ring chronology. The spatial distribution of these diagnostic rings was studied along a south-north and a west–east transect in several sites extending from the northern limit of the Boreal Forest Region to the tree line. Data showed an increase in the number and frequency of light-ring years among populations along the south–north transect but little variations along the west–east transect.