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Creator:: McGregor, Mark D. and United States. Forest Service. Northern Region
Resource Type:: Technical Report
Full Text:: , AND IRON MOUNTAIN MANAGEMENT UNITS 15 BIG TIMBER RANGER DISTRICT, GALLATIN NATIONAL FOREST MONTANA

Creator:: Hamel, Dennis R., McGregor, Mark D., and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: 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...
Resource Type:: Technical Report
Full Text:: , GALLATIN NATIONAL FOREST, MONTANA, 1975 by D. R. Hamel and M. D. McGregor ABSTRACT Emerged beetles

Creator:: McGregor, Mark D., Hamel, Dennis R., Lood, Rudolph C., and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: 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...
Resource Type:: Technical Report
Full Text:: , 1969-1975, Gallatin Ranger District, Gallatin National Forest, Montana. Buildup ratio Avg. d.b.h. of

Creator:: Hamel, Dennis R., McGregor, Mark D., and United States. Forest Service. Northern Region. State & Private Forestry
Resource Type:: Technical Report
Full Text:: District, Gallatin National Forest, Montana. USDA Forest Serv., Northern Region, State and Private Forestry

Creator:: Hamel, Dennis R., United States. Forest Service. Northern Region. Forest Environmental Protection, and United States. Forest Service. Northern Region. State & Private Forestry
Resource Type:: Technical Report
Full Text:: , Gallatin National Forest, Montana. USDA Forest Serv., Northern Region, State and Private Forestry, Missoula

Creator:: McGregor, Mark D. and United States. Forest Service. Northern Region. State & Private Forestry
Resource Type:: Technical Report
Full Text:: Burlington Northern Railway, State of Montana, private, and National Forest. A survey by Gallatin National

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:: Hebgen Lake District, Gallatin National Forest, Montana. 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:: THE HEBGEN LAKE RANGER DISTRICT, GALLATIN NATIONAL FOREST 1977 By M. D. McGregor and D. R. Hamel

Creator:: Dooling, Oscar J., Bortz, Joseph D., and Maxwell, Melton W.
Abstract:: Large areas of dwarf mistletoe-free, all-aged lodgepole pine have been identified in the West Yellowstone Basin. The option of uneven-aged management in these areas remains available to the District.
Resource Type:: Technical Report
Full Text:: DWARF MISTLETOE SURVEY, HEBGEN LAKE RANGER DISTRICT, GALLATIN NATIONAL FOREST, MONTANA by Oscar J

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