Wednesday, 20 November 2002

This presentation is part of : Display Presentations, Subsection Cd. Behavior and Ecology

Dendrochronological analysis of trees and stands attacked by mountain pine beetle in Colorado

Jose F. Negron and John Popp. USDA Forest Service, Rocky Mountain Research Station, 240 west prospect, fort collins, CO

During 1998 - 2000 we established plots in ponderosa pine stands infested by mountain pine beetle and in baseline stands. A model was developed to estimate the probability of infestation based on stand conditions. All trees larger than 6 inches in diameter at breast height were cored. Tree ring were cross-dated and measured. We observed significant reductions in basal area increments in infested stands and increased likelihood of infestation with increased ponderosa pine basal area.

Species 1: Coleoptera Scolytidae Dendroctonus ponderosae (mountain pine beetle)
Keywords: tree resistance, bark beetles

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