Abstract
For five decades after an outbreak of Douglas-fir tussock moth (
Orgyia pseudotsugata (McDunnough)), radial growth of defoliated white fir trees (
Abies concolor (Gord. & Glend.) Lindl.), was significantly greater than that of nondefoliated host trees nearby. The increased growth probably was due to the thinning effect of tree mortality and increased nutrient availability.
Keywords
Douglas-fir tussock moth,
white fir,
tree growth
Citation
Wickman, Boyd E.; Starr, G. Lynn. 1990. Mammoth lakes revisited—50 years after a Douglas-fir tussock moth outbreak. Res. Note. PNW-RN-498. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 8 p