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Creator:: McGregor, Mark D. and United States. Forest Service. Northern Region
Resource Type:: Technical Report
Full Text:: Forest Northern Service Region P.O. Box 7669 Missoula, Montana 59807 Table 1.--Status of insect

Creator:: McGregor, Mark D., Bennett, D. D., Meyer, Hubert E., and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: 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...
Resource Type:: Technical Report
Full Text:: , W. E. 1977. Forest insect and disease damage survey manual. USDA Forest Serv., State and Priv

Creator:: Gibson, Kenneth E., McGregor, Mark D., and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: This report contains a brief history of selected mountain pine beetle infestations and the potential for infestations in high hazard stands on the Tally Lake Ranger District. Management alternatives to lessen the severity, or reduce the possibility, of infestations are discussed.
Resource Type:: Technical Report
Full Text:: . • Bousfield, W. E. 1977. Forest insect and disease damage survey. USDA Forest Serv., State and Priv. Forestry

Creator:: McGregor, Mark D., Hamel, Dennis R., Meyer, Hubert E., and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: 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....
Resource Type:: Technical Report

Creator:: McGregor, Mark D., United States. Forest Service. Northern Region. Forest Insect and Disease Management, and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: 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...
Resource Type:: Technical Report
Full Text:: Dif/4/ PRoA, 3 FOREST sibv, -4_2. INSECT & DISEASE MANAGEMENT

Creator:: McGregor, Mark D., Hamel, Dennis R., Oakes, Robert D., and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: 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...
Resource Type:: Technical Report
Full Text:: SP /74 Ala FOREST ;,:,INSECT & DI MANAGEME USDA • FOREST SERVICE

Creator:: Hamel, Dennis R., McGregor, Mark D., Oakes, Robert D., and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: Mountain pine beetle populations developed to epidemic level in lodgepole pine stands in 1973. Approximately 426,355 trees were killed on 3,433 hectares in 1976. Infestations are expected to intensify in areas of current infestation and develop in uninfested stands. It is predicted that 1,722,288 trees will be killed in 1977....
Resource Type:: Technical Report
Full Text:: sTsiv )(_ FOREST nm INSECT DISEAScr, /0 Lu State & Private

Creator:: McGregor, Mark D., Hamel, Dennis R., and Oakes, Robert D.
Abstract:: Mountain pine beetle developed to epidemic levels in lodgepole pine stands in the Thompson River drainage in 1971. Approximately 506,616 trees are infested on 4,444 hectares. Based on buildup ratios, infestations are expected to intensify; develop in uninfected stands; and kill about 1,763,024 trees in 1977. Salvage logging of infested...
Resource Type:: Technical Report
Full Text:: ) FOREST s'INSECT & DISEASE MANAGEMENT USDA • FOREST SERVICE • NORTHERN REGION State & Private Forestry

Creator:: Bennett, D. D., McGregor, Mark D., and United States. Forest Service. Northern Region. State & Private Forestry
Resource Type:: Technical Report
Full Text:: lilt Forest Insect & Disease Management Report No. 80-16 A

Creator:: Gibson, Kenneth E., McGregor, Mark D., Bennett, D. D., and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: 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 has more than quadrupled, increasing from 9.8 in 1977 to 47.8 in 1979. Predictions for...
Resource Type:: Technical Report
Full Text:: Dakota). Insect infestations detected from the air are recorded on Forest maps, which are then provided

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