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• 1. [Article] Status of mountain pine beetle, Gallatin District, Gallatin National Forest, 1973

  Citation × Citation Citation Abstract Copy Title: Status of mountain pine beetle, Gallatin District, Gallatin National Forest, 1973 Author: McGregor, Mark D., United States. Forest Service. Northern Region. State & Private Forestry Title: Status of mountain pine beetle, Gallatin District, Gallatin National Forest, 1973 Author: McGregor, Mark D., United States. Forest Service. Northern Region. State & Private Forestry Close

• 2. [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

• 3. [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

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

  A multistage sampling survey to measure annual and cumulative mortality of lodgepole pine by mountain pine beetle was conducted on the Beaverhead and Gallatin National Forests, 1978-79. The survey area, ...

  Citation × Citation Citation Abstract Copy Title: A pilot survey to measure annual mortality caused by the mountain pine beetle in lodgepole pine on the Beaverhead and Gallatin National Forests, 1978 Author: United States. Forest Service. Northern Region. State & Private Forestry, Bousfield, Wayne E., Bennett, D. D. A multistage sampling survey to measure annual and cumulative mortality of lodgepole pine by mountain pine beetle was conducted on the Beaverhead and Gallatin National Forests, 1978-79. The survey area, 270,000 acres, was stratified into three intensity classes from aerial sketchmapping. This was followed by large scale (1:6,000) aerial photography, photographic interpretation, and ground truth measurements. Estimates of the number of lodgepole killed by mountain pine beetle in 1977 were 1,270,617 trees and 24.2 million cubic feet. The number of total standing dead within the survey boundaries was estimated at 3,117,888 trees and 62.2 million cubic feet. This total standing dead represents 31.4 percent of the total basal area. Title: A pilot survey to measure annual mortality caused by the mountain pine beetle in lodgepole pine on the Beaverhead and Gallatin National Forests, 1978 Author: United States. Forest Service. Northern Region. State & Private Forestry, Bousfield, Wayne E., Bennett, D. D. A multistage sampling survey to measure annual and cumulative mortality of lodgepole pine by mountain pine beetle was conducted on the Beaverhead and Gallatin National Forests, 1978-79. The survey area, 270,000 acres, was stratified into three intensity classes from aerial sketchmapping. This was followed by large scale (1:6,000) aerial photography, photographic interpretation, and ground truth measurements. Estimates of the number of lodgepole killed by mountain pine beetle in 1977 were 1,270,617 trees and 24.2 million cubic feet. The number of total standing dead within the survey boundaries was estimated at 3,117,888 trees and 62.2 million cubic feet. This total standing dead represents 31.4 percent of the total basal area. Close

• 5. [Article] Biological notes on the emergence of mountain pine beetle and associates from lodgepole pine, Gallatin Ranger District, Gallatin National Forest, Montana, 1975

  Emerged beetles were first collected July 17 and peak emergence occurred between August 10 and 26, 1975. Density of attacks averaged four per 0.5 ft. 2 (0.05 m2). Parent to brood ratio was 1:4.6. Thirteen associate ...

  Citation × Citation Citation Abstract Copy Title: Biological notes on the emergence of mountain pine beetle and associates from lodgepole pine, Gallatin Ranger District, Gallatin National Forest, Montana, 1975 Author: McGregor, Mark D., Hamel, Dennis R., United States. Forest Service. Northern Region. State & Private Forestry Emerged beetles were first collected July 17 and peak emergence occurred between August 10 and 26, 1975. Density of attacks averaged four per 0.5 ft. 2 (0.05 m2). Parent to brood ratio was 1:4.6. Thirteen associate insects, representing six families of Coleoptera and one of Diptera, were recovered. Associates included predators and secondary bark beetles. Future studies dependent on mountain pine beetle emergence require initiation or completion prior to mid-July. Title: Biological notes on the emergence of mountain pine beetle and associates from lodgepole pine, Gallatin Ranger District, Gallatin National Forest, Montana, 1975 Author: McGregor, Mark D., Hamel, Dennis R., United States. Forest Service. Northern Region. State & Private Forestry Emerged beetles were first collected July 17 and peak emergence occurred between August 10 and 26, 1975. Density of attacks averaged four per 0.5 ft. 2 (0.05 m2). Parent to brood ratio was 1:4.6. Thirteen associate insects, representing six families of Coleoptera and one of Diptera, were recovered. Associates included predators and secondary bark beetles. Future studies dependent on mountain pine beetle emergence require initiation or completion prior to mid-July. Close

• 6. [Article] Evaluation of mountain pine beetle infestations, Gallatin Ranger District, Gallatin National Forest, Montana, 1975

  Mountain pine beetle has occurred at epidemic level in lodgepole pine stands in the west Gallatin River drainage since 1969. Infestation now encompasses about 5,500 acres. Since 1969, approximately 463,212 ...

  Citation × Citation Citation Abstract Copy Title: Evaluation of mountain pine beetle infestations, Gallatin Ranger District, Gallatin National Forest, Montana, 1975 Author: United States. Forest Service. Northern Region. State & Private Forestry, Lood, Rudolph C., Hamel, Dennis R., McGregor, Mark D. Mountain pine beetle has occurred at epidemic level in lodgepole pine stands in the west Gallatin River drainage since 1969. Infestation now encompasses about 5,500 acres. Since 1969, approximately 463,212 trees, with an estimated volume of 20,529,244 board feet have been killed. Approximately 69 percent of the stands on the Gallatin District are classed as susceptible. It is predicted that about 927,781 trees will be killed in 1976. Selective logging to remove infested and susceptible trees is recommended to reduce the potential for a continued epidemic. Title: Evaluation of mountain pine beetle infestations, Gallatin Ranger District, Gallatin National Forest, Montana, 1975 Author: United States. Forest Service. Northern Region. State & Private Forestry, Lood, Rudolph C., Hamel, Dennis R., McGregor, Mark D. Mountain pine beetle has occurred at epidemic level in lodgepole pine stands in the west Gallatin River drainage since 1969. Infestation now encompasses about 5,500 acres. Since 1969, approximately 463,212 trees, with an estimated volume of 20,529,244 board feet have been killed. Approximately 69 percent of the stands on the Gallatin District are classed as susceptible. It is predicted that about 927,781 trees will be killed in 1976. Selective logging to remove infested and susceptible trees is recommended to reduce the potential for a continued epidemic. Close

• 7. [Article] Evaluation of mountain pine beetle infestation, Hebgen Lake Ranger District, Gallatin National Forest, Montana, 1978

  Mountain pine beetle populations developed to epidemic level in 1970 on the Hebgen Lake Ranger District. Infested acreage increased from 78,000 in 1977 to 79,061 in 1978. More than 4 million trees (238 ...

  Citation × Citation Citation Abstract Copy Title: Evaluation of mountain pine beetle infestation, Hebgen Lake Ranger District, Gallatin National Forest, Montana, 1978 Author: Meyer, Hubert E., United States. Forest Service. Northern Region. State & Private Forestry, McGregor, Mark D., Bennett, D. D. Mountain pine beetle populations developed to epidemic level in 1970 on the Hebgen Lake Ranger District. Infested acreage increased from 78,000 in 1977 to 79,061 in 1978. More than 4 million trees (238 MMBF) were killed in 1978. Cold temperatures during December 1978 may cause a significant decline in the beetle population, resulting in a decline in the number of newly attacked trees in 1979. Potential mortality from the beetle can be reduced and prevented through an accelerated program of (1) logging infested trees, and (2) silvicultural treatment of green and infested stands to reduce the inventory of large diameter highly preferred trees. High valued lodgepole pine in recreation and administrative sites should be sprayed with the preventative chemical, Sevimo1-4, to protect trees from beetle attack until the epidemic declines. Title: Evaluation of mountain pine beetle infestation, Hebgen Lake Ranger District, Gallatin National Forest, Montana, 1978 Author: Meyer, Hubert E., United States. Forest Service. Northern Region. State & Private Forestry, McGregor, Mark D., Bennett, D. D. Mountain pine beetle populations developed to epidemic level in 1970 on the Hebgen Lake Ranger District. Infested acreage increased from 78,000 in 1977 to 79,061 in 1978. More than 4 million trees (238 MMBF) were killed in 1978. Cold temperatures during December 1978 may cause a significant decline in the beetle population, resulting in a decline in the number of newly attacked trees in 1979. Potential mortality from the beetle can be reduced and prevented through an accelerated program of (1) logging infested trees, and (2) silvicultural treatment of green and infested stands to reduce the inventory of large diameter highly preferred trees. High valued lodgepole pine in recreation and administrative sites should be sprayed with the preventative chemical, Sevimo1-4, to protect trees from beetle attack until the epidemic declines. Close

• 8. [Article] Status of mountain pine beetle infestation, Bozeman-Gallatin Ranger District, Gallatin National Forest, 1977

  Mountain pine beetle populations developed to epidmic 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 ...

  Citation × Citation Citation Abstract Copy Title: Status of mountain pine beetle infestation, Bozeman-Gallatin Ranger District, Gallatin National Forest, 1977 Author: Meyer, Hubert E., United States. Forest Service. Northern Region. State & Private Forestry, Hamel, Dennis R., McGregor, Mark D. Mountain pine beetle populations developed to epidmic 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. Title: Status of mountain pine beetle infestation, Bozeman-Gallatin Ranger District, Gallatin National Forest, 1977 Author: Meyer, Hubert E., United States. Forest Service. Northern Region. State & Private Forestry, Hamel, Dennis R., McGregor, Mark D. Mountain pine beetle populations developed to epidmic 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. Close

• 9. [Article] Evaluation of mountain pine beetle in high use areas and other infested stands on the Hebgen Lake Ranger District, Gallatin National Forest, 1977

  Mountain pine beetle populations reached epidemic level on the Hebgen Lake Ranger District in 1970. Infested area increased from 6,680 acres in 1970 to 78,000 acres in 1977. Buildup ratio of trees killed ...

  Citation × Citation Citation Abstract Copy Title: Evaluation of mountain pine beetle in high use areas and other infested stands on the Hebgen Lake Ranger District, Gallatin National Forest, 1977 Author: United States. Forest Service. Northern Region. State & Private Forestry, United States. Forest Service. Northern Region. Forest Insect and Disease Management, McGregor, Mark D. Mountain pine beetle populations reached epidemic level on the Hebgen Lake Ranger District in 1970. Infested area increased from 6,680 acres in 1970 to 78,000 acres in 1977. Buildup ratio of trees killed in 1976 to trees killed in 1977 is 1:8. Approximately 1,700,000 trees, containing 175 MMBF of merchantable timber, are currently infested. An accelerated program of logging infested trees and silvicultural treatment to reduce the inventory of large diameter trees is recommended. In high use areas (campgrounds and administrative sites), 3,027 trees are currently infested. Buildup ratio is expected to exceed 1:1 in 1978. In high use areas all green lodgepole pine 7 inches d.b.h. and larger, which are to be retained, should be sprayed with the protective spray Sevimol 4. Infested trees should be removed prior to July 1, 1978. Trees that have been dead for several years may be a hazard and should be removed. Title: Evaluation of mountain pine beetle in high use areas and other infested stands on the Hebgen Lake Ranger District, Gallatin National Forest, 1977 Author: United States. Forest Service. Northern Region. State & Private Forestry, United States. Forest Service. Northern Region. Forest Insect and Disease Management, McGregor, Mark D. Mountain pine beetle populations reached epidemic level on the Hebgen Lake Ranger District in 1970. Infested area increased from 6,680 acres in 1970 to 78,000 acres in 1977. Buildup ratio of trees killed in 1976 to trees killed in 1977 is 1:8. Approximately 1,700,000 trees, containing 175 MMBF of merchantable timber, are currently infested. An accelerated program of logging infested trees and silvicultural treatment to reduce the inventory of large diameter trees is recommended. In high use areas (campgrounds and administrative sites), 3,027 trees are currently infested. Buildup ratio is expected to exceed 1:1 in 1978. In high use areas all green lodgepole pine 7 inches d.b.h. and larger, which are to be retained, should be sprayed with the protective spray Sevimol 4. Infested trees should be removed prior to July 1, 1978. Trees that have been dead for several years may be a hazard and should be removed. Close

• 10. [Article] Status of mountain pine beetle infestations, Gallatin District, Gallatin National Forest, 1973

  Mountain pine beetle infestations have continued at epidemic level in lodgepole pine stands since 1969 in the West Gallatin River drainage. This infestation has increased at about a 1.9:1 buildup ratio ...

  Citation × Citation Citation Abstract Copy Title: Status of mountain pine beetle infestations, Gallatin District, Gallatin National Forest, 1973 Author: McGregor, Mark D., United States. Forest Service. Northern Region. State & Private Forestry Mountain pine beetle infestations have continued at epidemic level in lodgepole pine stands since 1969 in the West Gallatin River drainage. This infestation has increased at about a 1.9:1 buildup ratio annually. Since the outbreak began in 1969, surveys indicate that approximately 22,354 merchantable size trees have been killed with an estimated volume loss of 1,061 MMBF. This is a total of about 27 percent of the merchantable lodgepole pine within areas surveyed. Additional tree mortality and volume loss have occurred, but not all infested areas were surveyed due to land exchange between Big Sky Corporation, Burlington Northern Railroad, and the Forest Service. Operational control of felling and burning, and salvage logging of infested trees was initiated in 1971. This action did little to slow the impetus of the outbreak, because the complete infestation could not be suppressed. The outbreak is expected to continue at epidemic levels in 1974, with an increase in the number of infested trees. A cooperative administrative study between the Northern Region and Intermountain Forest and Range Experiment Station is planned in fiscal year 1975 to determine if silvicultural methods can be used to control mountain pine beetle in mature and overmature overstocked lodgepole pine stands on the Gallatin National Forest. Title: Status of mountain pine beetle infestations, Gallatin District, Gallatin National Forest, 1973 Author: McGregor, Mark D., United States. Forest Service. Northern Region. State & Private Forestry Mountain pine beetle infestations have continued at epidemic level in lodgepole pine stands since 1969 in the West Gallatin River drainage. This infestation has increased at about a 1.9:1 buildup ratio annually. Since the outbreak began in 1969, surveys indicate that approximately 22,354 merchantable size trees have been killed with an estimated volume loss of 1,061 MMBF. This is a total of about 27 percent of the merchantable lodgepole pine within areas surveyed. Additional tree mortality and volume loss have occurred, but not all infested areas were surveyed due to land exchange between Big Sky Corporation, Burlington Northern Railroad, and the Forest Service. Operational control of felling and burning, and salvage logging of infested trees was initiated in 1971. This action did little to slow the impetus of the outbreak, because the complete infestation could not be suppressed. The outbreak is expected to continue at epidemic levels in 1974, with an increase in the number of infested trees. A cooperative administrative study between the Northern Region and Intermountain Forest and Range Experiment Station is planned in fiscal year 1975 to determine if silvicultural methods can be used to control mountain pine beetle in mature and overmature overstocked lodgepole pine stands on the Gallatin National Forest. Close