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Creator:: McGregor, Mark D. and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: Mountain pine beetle populations began building in the Kootenai National Forest in 1972. Infestations now encompass an estimated 48,599 acres of lodgepole pine type and 615 acres of ponderosa pine type. Approximately 25 percent of the high-risk stands, 17 percent of the moderate-risk, and less than 1 percent of the...
Resource Type:: Technical Report
Full Text:: , (2) ccm- binations of cleared openings and high forest are required to meet forest management uses

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:: various forest management uses, and (3) regeneration of the stand is difficult after clearcutting. Data

Creator:: McGregor, Mark D., Bennett, D. D., and United States. Forest Service. Northern Region. State & Private Forestry
Resource Type:: Technical Report
Full Text:: compatible with other land management objectives. Research Work Unit 2201, Intermountain Forest and Range

Creator:: Bennett, D. D., McGregor, Mark D., and United States. Forest Service. Northern Region. State & Private Forestry
Resource Type:: Technical Report
Full Text:: cooperative effort between the Lewis and Clark National Forest, Bureau of Land Management, Forest Insect and

Creator:: Gibson, Kenneth E., McGregor, Mark D., Bennett, D. D., and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: 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 increased mortality is considered high for all areas. Each area will be evaluated for 5 years...
Resource Type:: Technical Report
Full Text:: . Bennett (USDA-Forest Service, Northern Region, Forest Insect and Disease Management Report No. 80-8

Creator:: Gibson, Kenneth E., McGregor, Mark D., Dewey, Jerald E., and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: The mountain pine beetle infestation in Corral, Little Corral, and Cache Creeks on the Crow Indian Reservation, Montana has been increasing for the past several years. Trees killed per acre averaged 38.8 in 1979. Our predictions for the future trend of the infestation, plus management alternatives to lessen its severity,...
Resource Type:: Technical Report
Full Text:: second-growth ponderosa pine 3/ stands 1/ Forest Service, Northern Region, State and Private Forestry

Creator:: McGregor, Mark D., Gibson, Kenneth E., and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: Mountain pine beetle infestation was detected in stands on the east side of Glacier National Park and the adjacent Blackfeet Indian Reservation in 1979. Infestation in the Park now encompasses an estimated 215,882 acres. About 200 acres are infested on the reservation. In areas sampled, number of trees killed per...
Resource Type:: Technical Report
Full Text:: and high forest are required to meet forest management uses, and (3) regeneration of the stand is

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:: 5D// tio A3 FOREST (74INSECT & DISEASE MANAGEMENT USDA • FOREST

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:: FOREST 8iNbER *INSECT S. DISEASE MANAGEMENT USDA • FOREST SERVICE

Creator:: McGregor, Mark D. and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: Mountain pine beetle populations increased to epidemic levels on the Kootenai National Forest in 1972. Nearly 397,000 trees containing almost 32 million board feet have been killed. More than 84,000 trees will probably be killed in 1978. Infestation has the potential to intensify in high hazard stands, and some increase...
Resource Type:: Technical Report
Full Text:: Management, Ogden, Utah. , 6 p. • • Bousfield, W.E. Forest Serv. 1977. Forest insect and diseast damage

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