Protected Areas

Protected Areas

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  1. Status of Douglas-fir bark beetle, Madison Ranger District, Beaverhead National Forest, 1982

    Douglas-fir beetle has increased to epidemic levels in mature-overmature

  2. Western spruce budworm 1/ control project on the Big Timber Ranger District, Gallatin National Forest, Montana

    The microbial insecticide, Bacillus thuringensis (Bt), was applied from fixed-wing aircraft

  3. Evaluation of Douglas-fir beetle infestations, North Fork Clearwater River Drainage, Idaho, 1974

    Douglas-fir beetle, Dendroctonus pseudotsugae Hopk., has caused

  4. Potential for defoliation by western spruce budworm in Douglas-fir stands in eastern Montana, 1975

    Aerially visible defoliation by the western spruce budworm,

  5. Evaluation of mountain pine beetle infestations, Snell Creek and Warland Peak areas, Fisher River District, Kootenai National...

    Mountain pine beetle infestations in the Snell Creek and Warland

  6. Evaluation of 35mm vertical aerial photography for estimating tree mortality

    Evaluation of four 35 mm film:lens combinations for estimating conifer

  7. Impact of fluorides and insects on radial growth of lodgepole pine near an aluminum smelter in Northwestern Montana : a...

    A study was conducted in summer of 1973 to assess impact of fluoride-insect

  8. Status of mountain pine beetle infestations, Yellowstone National Park, Wyoming, 1973

    The mountain pine beetle infestation has been epidemic in lodgepole

  9. Potential for defoliation by western spruce budworm in Douglas-fir stands in Montana, 1976

    Aerial surveys of six Montana National Forests in 1975 found

  10. Evaluation of mountain pine beetle in high use areas and other infested stands on the Hebgen Lake Ranger District, Gallatin...

    Mountain pine beetle populations reached epidemic level on the Hebgen

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