Progress report on the rate of deterioration of beetle-killed Engelmann spruce in Colorado

Frank G. Hawksworth; Thomas E. Hinds

Treesearch

Progress report on the rate of deterioration of beetle-killed Engelmann spruce in Colorado

Informally Refereed

Authors:

Frank G. Hawksworth, Thomas E. Hinds

Year:

1959

Type:

Miscellaneous Publication

Station:

Rocky Mountain Research Station

Source:

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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Abstract

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

Citation

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.