|
|
Article: Whitebark pine and white pine blister rust in the Rocky Mountains of Canada and northern Montana.(Report)
- Article from:
- Canadian Journal of Forest Research
- Article date:
- May 1, 2008
- Author:
CopyrightCOPYRIGHT 2008 NRC Research Press. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
|
Abstract: In 2003-2004, we examined 8031 whitebark pine (Pinus albicaulis Engelm.) trees and 3812 seedling- establishment sites in 170 plots for mortality and incidence of white pine blister rust (Cronartium ribicola A. Dietr.). We found blister rust in all but four plots (98%), and 57% of all trees assessed for blister rust were either already dead or showed signs of blister rust infection. Mean percentage of trees infected was highest in the southern Canada--United States border area (~73%), decreasing to a low in the northern region of Banff National Park, Alberta (~16%), and then rising (~60%) in the northern end of the study area in Jasper National Park, Alberta. ...