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Title: Progress report on the rate of deterioration of beetle-killed Engelmann spruce in Colorado
Author: Hawksworth, Frank G.; Hinds, Thomas E.;
Source: Research Notes 36. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station. 6 p.
Publication Series: Miscellaneous Publication
Description: A severe windstorm in 1939 blew down extensive patches of Engelmann spruce (Picea engelmannii Parry) in western Colorado. A major epidemic of the Engelmann spruce beetle (Dendroctonus engelmanni Hopk.) developed from the windthrown trees and by 1952, when the epidemic was controlled by a combination of chemical and natural-control factors, an estimated four billion board-feet of Engelmann spruce and a half billion board-feet of lodgepole pine had been killed.
Keywords: Engelmann spruce, Picea engelmannii Parry, Engelmann spruce beetle, Dendroctonus engelmanni Hopk., western Colorado
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Hawksworth, Frank G.; Hinds, Thomas E. 1959. Progress report on the rate of deterioration of beetle-killed Engelmann spruce in Colorado. Research Notes 36. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station. 6 p.
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