2011-07-13

Mountain pine beetle numbers down in southwestern Alberta

The winter was hard on mountain pine beetles throughout southwestern Alberta, with low survival rates recorded by the province.

Areas outside the national park were tracked by Sustainable Resource Development, and found while milder temperatures allowed beetles to survive more readily in the northwestern area of the province, colder weather further south helped slow their spread.

"I suspect that in the south they had a combination of cold temperatures and not enough snow on the ground," said Dr. Allan Carroll, an associate professor in the Department of Forest Sciences at the University of British Columbia.