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• 101. [Article] Evaluation of a mountain pine beetle infestation, Gold Creek Drainage, Rexford District, Kootenai National Forest, 1976

  A mountain pine beetle infestation developed in lodgepole pine stands in the Gold Creek drainage in 1974. From 1974 to 1976 approximately 19,000 trees with an estimated volume of 10,210 cu m were killed. ...

  Citation × Citation Citation Abstract Copy Title: Evaluation of a mountain pine beetle infestation, Gold Creek Drainage, Rexford District, Kootenai National Forest, 1976 Author: United States. Forest Service. Northern Region. State & Private Forestry, Oakes, Robert D., Hamel, Dennis R. A mountain pine beetle infestation developed in lodgepole pine stands in the Gold Creek drainage in 1974. From 1974 to 1976 approximately 19,000 trees with an estimated volume of 10,210 cu m were killed. Based on buildup ratios, stand structure, size of trees, and residual green stand, it is predicted that 5,756 trees will be killed in 1977. Three management alternatives are discussed and selective logging is recommended. Title: Evaluation of a mountain pine beetle infestation, Gold Creek Drainage, Rexford District, Kootenai National Forest, 1976 Author: United States. Forest Service. Northern Region. State & Private Forestry, Oakes, Robert D., Hamel, Dennis R. A mountain pine beetle infestation developed in lodgepole pine stands in the Gold Creek drainage in 1974. From 1974 to 1976 approximately 19,000 trees with an estimated volume of 10,210 cu m were killed. Based on buildup ratios, stand structure, size of trees, and residual green stand, it is predicted that 5,756 trees will be killed in 1977. Three management alternatives are discussed and selective logging is recommended. Close

• 102. [Article] Status of bark beetle populations in windthrow Flathead National Forest, Montana, 1976

  Windthrow occurred during late April on the Glacier View, Hungry Horse, Spotted Bear, and Swan Lake Ranger Districts, Flathead National Forest. An evaluation to determine potential for development of spruce ...

  Citation × Citation Citation Abstract Copy Title: Status of bark beetle populations in windthrow Flathead National Forest, Montana, 1976 Author: McGregor, Mark D., Oakes, Robert D., Hamel, Dennis R., United States. Forest Service. Northern Region. State & Private Forestry Windthrow occurred during late April on the Glacier View, Hungry Horse, Spotted Bear, and Swan Lake Ranger Districts, Flathead National Forest. An evaluation to determine potential for development of spruce beetle and Douglas-fir beetle outbreaks was made during late June and early July. All areas examined were classed as having low or medium potential for outbreak development. Salvage logging is recommended to further reduce outbreak potential. Title: Status of bark beetle populations in windthrow Flathead National Forest, Montana, 1976 Author: McGregor, Mark D., Oakes, Robert D., Hamel, Dennis R., United States. Forest Service. Northern Region. State & Private Forestry Windthrow occurred during late April on the Glacier View, Hungry Horse, Spotted Bear, and Swan Lake Ranger Districts, Flathead National Forest. An evaluation to determine potential for development of spruce beetle and Douglas-fir beetle outbreaks was made during late June and early July. All areas examined were classed as having low or medium potential for outbreak development. Salvage logging is recommended to further reduce outbreak potential. Close

• 103. [Article] Status of mountain pine beetle infestation, Gallatin National Forest, 1976

  Mountain pine beetle developed to epidemic level in lodgepole pine stands in 1969 on the Gallatin District and in 1970 on the Hebgen Lake District. Epidemic infestation occurs on 53,437 hectares. Infestations ...

  Citation × Citation Citation Abstract Copy Title: Status of mountain pine beetle infestation, Gallatin National Forest, 1976 Author: United States. Forest Service. Northern Region. State & Private Forestry, Oakes, Robert D., Hamel, Dennis R., McGregor, Mark D. Mountain pine beetle developed to epidemic level in lodgepole pine stands in 1969 on the Gallatin District and in 1970 on the Hebgen Lake District. Epidemic infestation occurs on 53,437 hectares. Infestations will intensify in most areas currently infested and develop in uninfested stands, and in excess of 2 million trees could be killed in 1977. Salvage logging to remove brood trees and silvicultural management to reduce average stand diameter below 20.3 cm d.b.h. are recommended to manage the infestation. Title: Status of mountain pine beetle infestation, Gallatin National Forest, 1976 Author: United States. Forest Service. Northern Region. State & Private Forestry, Oakes, Robert D., Hamel, Dennis R., McGregor, Mark D. Mountain pine beetle developed to epidemic level in lodgepole pine stands in 1969 on the Gallatin District and in 1970 on the Hebgen Lake District. Epidemic infestation occurs on 53,437 hectares. Infestations will intensify in most areas currently infested and develop in uninfested stands, and in excess of 2 million trees could be killed in 1977. Salvage logging to remove brood trees and silvicultural management to reduce average stand diameter below 20.3 cm d.b.h. are recommended to manage the infestation. Close

• 104. [Article] Status of mountain pine beetle infestations in second-growth ponderosa pine stands, Little Rocky Mountains, Fort Belknap Reservation, Montana, 1977

  Mountain pine beetle infestations in second-growth ponderosa pine developed in 1973 in the Little Rocky Mountains. In 1976, increasing numbers of attacked trees were observed. Current infestation intensity averages ...

  Citation × Citation Citation Abstract Copy Title: Status of mountain pine beetle infestations in second-growth ponderosa pine stands, Little Rocky Mountains, Fort Belknap Reservation, Montana, 1977 Author: United States. Forest Service. Northern Region. State & Private Forestry, Hamel, Dennis R. Mountain pine beetle infestations in second-growth ponderosa pine developed in 1973 in the Little Rocky Mountains. In 1976, increasing numbers of attacked trees were observed. Current infestation intensity averages 7.1 trees per acre. Losses are expected to continue as long as stands remain overstocked and stagnated. Reduction of basal area by commercial sales and/or thinning is recommended. Precautions are given to prevent population buildup of secondary bark beetles. Title: Status of mountain pine beetle infestations in second-growth ponderosa pine stands, Little Rocky Mountains, Fort Belknap Reservation, Montana, 1977 Author: United States. Forest Service. Northern Region. State & Private Forestry, Hamel, Dennis R. Mountain pine beetle infestations in second-growth ponderosa pine developed in 1973 in the Little Rocky Mountains. In 1976, increasing numbers of attacked trees were observed. Current infestation intensity averages 7.1 trees per acre. Losses are expected to continue as long as stands remain overstocked and stagnated. Reduction of basal area by commercial sales and/or thinning is recommended. Precautions are given to prevent population buildup of secondary bark beetles. Close

• 105. [Article] Dwarf mistletoe loss assessment on the Bitterroot and Lolo National Forests, Montana

  Citation × Citation Citation Abstract Copy Title: Dwarf mistletoe loss assessment on the Bitterroot and Lolo National Forests, Montana Author: Dooling, Oscar J., United States. Forest Service. Northern Region. State & Private Forestry, Eder, Robert G., Pye, Laurel Hilarie, 1952- Title: Dwarf mistletoe loss assessment on the Bitterroot and Lolo National Forests, Montana Author: Dooling, Oscar J., United States. Forest Service. Northern Region. State & Private Forestry, Eder, Robert G., Pye, Laurel Hilarie, 1952- Close

• 106. [Article] An assessment of dwarf mistletoes in Montana

  Dwarf mistletoes reduce tree height and diameter, and thereby cause a reduction in volume production. We estimate that volume reduction in Montana is about 33.2 MM cubic feet per year. Mistletoe effects ...

  Citation × Citation Citation Abstract Copy Title: An assessment of dwarf mistletoes in Montana Author: Dooling, Oscar J., United States. Forest Service. Northern Region. State & Private Forestry, Eder, Robert G. Dwarf mistletoes reduce tree height and diameter, and thereby cause a reduction in volume production. We estimate that volume reduction in Montana is about 33.2 MM cubic feet per year. Mistletoe effects are problems in some areas because of the demands we have placed on the Forests for goods and services. Much of their impact can be reduced to levels consistent with resource management objectives through cultural practices. The resource manager considers information on the stands, pest-caused losses, and environmental and social considerations in deciding for or against cultural control. Title: An assessment of dwarf mistletoes in Montana Author: Dooling, Oscar J., United States. Forest Service. Northern Region. State & Private Forestry, Eder, Robert G. Dwarf mistletoes reduce tree height and diameter, and thereby cause a reduction in volume production. We estimate that volume reduction in Montana is about 33.2 MM cubic feet per year. Mistletoe effects are problems in some areas because of the demands we have placed on the Forests for goods and services. Much of their impact can be reduced to levels consistent with resource management objectives through cultural practices. The resource manager considers information on the stands, pest-caused losses, and environmental and social considerations in deciding for or against cultural control. Close

• 107. [Article] A three year evaluation of Douglas-fir cone and seed insects in Montana and Yellowstone National Park

  A 3-year evaluation of Douglas-fir cones in Montana and Yellowstone National Park, Wyoming, showed the western spruce budworm, Choristoneura occidentalis Freeman, and midges were the most common and injurious ...

  Citation × Citation Citation Abstract Copy Title: A three year evaluation of Douglas-fir cone and seed insects in Montana and Yellowstone National Park Author: Dewey, Jerald E., United States. Forest Service. Northern Region. State & Private Forestry A 3-year evaluation of Douglas-fir cones in Montana and Yellowstone National Park, Wyoming, showed the western spruce budworm, Choristoneura occidentalis Freeman, and midges were the most common and injurious insects found each year. Injury was so severe at some plots that no 41 sound seeds could be found. Title: A three year evaluation of Douglas-fir cone and seed insects in Montana and Yellowstone National Park Author: Dewey, Jerald E., United States. Forest Service. Northern Region. State & Private Forestry A 3-year evaluation of Douglas-fir cones in Montana and Yellowstone National Park, Wyoming, showed the western spruce budworm, Choristoneura occidentalis Freeman, and midges were the most common and injurious insects found each year. Injury was so severe at some plots that no 41 sound seeds could be found. Close

• 108. [Article] Observations on the impact of dwarf mistletoe on Douglas-fir in western Montana

  Dwarf mistletoe is known to reduce both height and diameter growth and thus reduce the yield of an infested stand. This comparison of two similar stands--one healthy and the other infested--gives an indication ...

  Citation × Citation Citation Abstract Copy Title: Observations on the impact of dwarf mistletoe on Douglas-fir in western Montana Author: Dooling, Oscar J., United States. Forest Service. Northern Region. State & Private Forestry, Haglund, Steve Dwarf mistletoe is known to reduce both height and diameter growth and thus reduce the yield of an infested stand. This comparison of two similar stands--one healthy and the other infested--gives an indication of the impact of this parasite. The healthy stand has produced 1.5 times the board foot volume in one-half the time. By predicting the volume of the healthy stand at age 120 (the age of the infested stand), the healthy stand will produce 3.7 times the board foot volume of the infested stand. Title: Observations on the impact of dwarf mistletoe on Douglas-fir in western Montana Author: Dooling, Oscar J., United States. Forest Service. Northern Region. State & Private Forestry, Haglund, Steve Dwarf mistletoe is known to reduce both height and diameter growth and thus reduce the yield of an infested stand. This comparison of two similar stands--one healthy and the other infested--gives an indication of the impact of this parasite. The healthy stand has produced 1.5 times the board foot volume in one-half the time. By predicting the volume of the healthy stand at age 120 (the age of the infested stand), the healthy stand will produce 3.7 times the board foot volume of the infested stand. Close

• 109. [Article] Potential for the pine butterfly defoliation on the Flathead Indian Reservation in 1973

  The pine butterfly, Neophasia menapia Feld., has been at epidemic levels in the Bitterroot and Missoula valleys for the past 2 years (Ciesla et al. 1971) (Bousfield and Meyer 1972). Several reports of ...

  Citation × Citation Citation Abstract Copy Title: Potential for the pine butterfly defoliation on the Flathead Indian Reservation in 1973 Author: United States. Forest Service. Northern Region. State & Private Forestry, Bousfield, Wayne E. The pine butterfly, Neophasia menapia Feld., has been at epidemic levels in the Bitterroot and Missoula valleys for the past 2 years (Ciesla et al. 1971) (Bousfield and Meyer 1972). Several reports of conspicuous pine butterfly flights on the Flathead Indian Reservation prompted an evaluation of the potential for pine butterfly defoliation in this area in 1973. Title: Potential for the pine butterfly defoliation on the Flathead Indian Reservation in 1973 Author: United States. Forest Service. Northern Region. State & Private Forestry, Bousfield, Wayne E. The pine butterfly, Neophasia menapia Feld., has been at epidemic levels in the Bitterroot and Missoula valleys for the past 2 years (Ciesla et al. 1971) (Bousfield and Meyer 1972). Several reports of conspicuous pine butterfly flights on the Flathead Indian Reservation prompted an evaluation of the potential for pine butterfly defoliation in this area in 1973. Close

• 110. [Article] Pilot survey to measure annual mortality caused by the mountain pine beetle in lodgepole pine on the Beaverhead, Gallatin and Flathead National Forests in 1978

  Citation × Citation Citation Abstract Copy Title: Pilot survey to measure annual mortality caused by the mountain pine beetle in lodgepole pine on the Beaverhead, Gallatin and Flathead National Forests in 1978 Author: United States. Forest Service. Northern Region. State & Private Forestry, Bennett, D. D. Title: Pilot survey to measure annual mortality caused by the mountain pine beetle in lodgepole pine on the Beaverhead, Gallatin and Flathead National Forests in 1978 Author: United States. Forest Service. Northern Region. State & Private Forestry, Bennett, D. D. Close