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Status of mountain pine beetle infestation, Bozeman-Gallatin Ranger District, Gallatin National Forest, 1977

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  • Mountain pine beetle populations developed to epidemic level on the Bozeman-Gallatin Ranger District in 1969. Approximately 146,000 acres are currently infested. Since 1969, over 350 MMBF have been killed. It is predicted that over 4 million trees could be killed in 1978. Infestation is predicted to intensify in high-hazard stands. Populations have declined in areas where infestation first developed in 1969. Potential losses can be reduced through an accelerated program of (1) sanitation salvage cutting and (2) silvicultural management. High hazard stands should receive first priority.
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