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Title: Heart Rots of Engelmann Spruce and Subalpine Fir in the Central Rocky Mountain Region (FIDL)
Author: Hinds, T.E.;
Source: Forest Insect & Disease Leaflet 150. [Denver, CO:] U.S. Dept. of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station
Publication Series: Forest Insect and Disease Leaflet (FIDL)
Description: Engelmann spruce (Picea engelmannii)-subalpine fir (Abies lasiocarpa) forests are widely distributed in western North America--from the northern Rocky Mountains of British Columbia and Alberta southward into Arizona and New Mexico. They occur at elevations of 2,000 to 7,000 feet in their northern range whereas they are found from about 8,000 to 12,000 feet in the south. Heart rot defect and the importance of specific fungi causing decay vary considerably over the range of the hosts. Average defect attributed to rot, for instance, amounts to 20 percent of the gross merchantable board-foot volume of spruce in Alberta, 12 percent in the Blue Mountains of Oregon and Washington, and 15 percent in Colorado.
Keywords: Fungi, decline, mortality.
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Hinds, T.E. 1977. Heart Rots of Engelmann Spruce and Subalpine Fir in the Central Rocky Mountain Region (FIDL). Forest Insect & Disease Leaflet 150. [Denver, CO:] U.S. Dept. of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station
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