. Current topics in forest entomology : selected papers from the XVth International Congress of Entomology, Washington, , 1976. Forest insects Congresses. • 4- ACRE MORTALITY t AERIAL < GROUND TRUTH) • LIVE CROWN RATIO •SO'x IOO' HABITAT PLOT • CROWN DENSITY •STAND STRUCTURE C&AF ) • BORING •REPRODUCTION . MISTLETOE RATING •TREE HEIGHT . GROUND PHOTO Figure 1.—The basic plot sampling design. trees were permanently tagged for future reference. Additional data was taken on tree height, live crown ratio, mistletoe occurrence, growth rates, crown density, reproduction, habit
. Current topics in forest entomology : selected papers from the XVth International Congress of Entomology, Washington, , 1976. Forest insects Congresses. • 4- ACRE MORTALITY t AERIAL < GROUND TRUTH) • LIVE CROWN RATIO •SO'x IOO' HABITAT PLOT • CROWN DENSITY •STAND STRUCTURE C&AF ) • BORING •REPRODUCTION . MISTLETOE RATING •TREE HEIGHT . GROUND PHOTO Figure 1.—The basic plot sampling design. trees were permanently tagged for future reference. Additional data was taken on tree height, live crown ratio, mistletoe occurrence, growth rates, crown density, reproduction, habitat type, and herbage yield. Each plot was permanently marked and photographed on the ground for future comparisons and remeasurements. Results Lodgepole pine mortality was estimated two ways: by aerial photography interpreta- tion, and by the variable plot method. Esti- mates of the number of lodgepole pine per acre killed by the mountain pine beetle by both of 36. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original International Congress of Entomology (15th : 1976 : Washington, D. C. ). Washington : United States Dept. of Agriculture, Forest Service
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