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Forestry
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Bennett, D. D.
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Gibson, K. E. (Kenneth E.)
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United States. Forest Service. Northern Region. State & Private Forestry
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1. [Article] Bark beetle conditions, Northern Region, 1978
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During December 1978 and January 1979, temperatures reached all-time lows in some parts of Montana. Overwintering mountain pine beetle populations were sampled at 11 sites during February and March 1979. ...
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Mountain pine beetle populations increased in 1979 in the Thompson River drainage to levels predicted following the 1978 attack period. New attacks in 1979 averaged 27 per acre. Current estimates indicate ...
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4. [Article] An evaluation of a developing mountain pine beetle infestation in Centennial Valley, Montana, 1979
The mountain pine beetle infestation on Bureau of Land Management lands in Centennial Valley has increased from about 500 acres in 1977 to more than 7,000 in 1979. Average number of trees per acre killed ...Citation -
5. [Article] Establishment report : permanent mountain pine beetle population trend plots, Montana, 1979
Thirty permanent mountain pine beetle population trend plots were established in each of six areas in the state in 1979. Infestation levels ranged from 0 to 47.8 new attacks per acre. The potential for ...Citation