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Effect of competition on survival in western Oregon of the Douglas-fir beetle : Dendroctonus pseudotsugae Hopkins (Coleoptera: Scolytidae)

Creator:: Schmitz, Richard F., Rudinsky, J. A. (Julius Alexander), 1917-, and Oregon State University. Forest Research Laboratory
Resource Type:: Technical Report
Full Text:: Western Oregon of the Douglas-Fir Beetle Dendroctonus pseudotsugae Hopkins (Coleoptera: Scolytidae) By

Evaluation of the Douglas-fir beetle infestation : North Fork Clearwater River drainage, northern Idaho, 1970-73

Creator:: McGregor, Mark D., Furniss, M. M., Bousefield, W. E., Almas, D. P., Gravelle, Paul J., and Oakes, R. D.
Abstract:: An outbreak of Douglas-fir beetle, Dendroctonus pseudotsugae Hopk., began in 1969 in the North Fork Clearwater River drainage in northern Idaho. This infestation probably resulted from trees felled during clearing for the Dworshak Reservoir, from ice and snow breakage which occurred during the winter of 1968-69 in stands adjacent to...
Resource Type:: Technical Report
Full Text:: (Revised January 1975) 'ALUATION OF THE DOUGLAS-FIR BEETLE INFESTATION North Fork Clearwater River

Douglas-fir beetle population assessment : Idaho Panhandle National Forests, 2000

Creator:: Kegley, Sandy, McConnell, Timothy J., United States. Forest Health Protection, and United States. Forest Service. Northern Region
Resource Type:: Technical Report
Full Text:: 2001 DOUGLAS-FIR BEETLE POPULATION ASSESSMENT IDAHO PANHANDLE NATIONAL FORESTS, 2000 Sandra Kegley

Analysis of Douglas-fir beetle population dynamics from aerial survey data using group size analysis

Creator:: Randall, Carol, United States. Forest Health Protection, and United States. Forest Service. Northern Region
Resource Type:: Technical Report
Full Text:: • • • • • Table 1. Numbers of Douglas-fir-beetle-killed groups of trees by approximate group size (numbers of dead

Evaluation of Douglas-fir beetle infestations, North Fork Clearwater River Drainage, Idaho, 1974

Creator:: Hamel, Dennis R., United States. Forest Service. Northern Region. Forest Environmental Protection, and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: Douglas-fir beetle, Dendroctonus pseudotsugae Hopk., has caused extensive tree mortality in the North Fork Clearwater River drainage since 1971. In 1974, survey estimates indicated a continued decline in the infestation. Average group size decreased from a high of 158 trees per group in 1971 to 17 in 1974. Average area...
Resource Type:: Technical Report
Full Text:: EVALUATION OF DOUGLAS-FIR BEETLE INFESTATIONS, NORTH FORK CLEARWATER RIVER DRAINAGE, IDAHO -- 1974 by D. R

Douglas-fir beetle population assessment : Idaho Panhandle National Forests

Creator:: Kegley, Sandy, United States. Forest Health Protection, and United States. Forest Service. Northern Region
Abstract:: The unusually large amount of ice, snow, and wind-damaged trees that occurred during the winter of 1996-97 provided prime habitat for populations of the Douglas-fir beetle (DFB) (Dendroctonus pseudotsugae) to build to epidemic numbers. Beetles emerged during the spring and summer of 1998, attacking hundreds of thousands of standing Douglas-fir...
Resource Type:: Technical Report
Full Text:: provided prime habitat for populations of the Douglas-fir beetle (DFB) (Dendroctonus pseudotsugae) to build

Evaluation of Douglas-fir mortality from Douglas-fir beetle from 1982 through 1984 following MCH application

Creator:: McGregor, Mark D., Oakes, Robert D., Meyer, Hubert E., and United States. Forest Service. Northern Region
Abstract:: A granular controlled release formulation of 2 percent MCH was applied at 4.48 kg/ha to 76.9 ha of uninfested, windthrown Douglas-fir by helicopter with a modified aerial spreader of 1.12 m capacity in May 1982. Douglas-fir beetle population reduction was 96.4 percent by late June. With one exception, treated plots...
Resource Type:: Technical Report
Full Text:: • EVALUATION OF DOUGLAS-FIR MORTALITY FROM DOUGLAS-FIR BEETLE FROM

Evaluation of the Douglas-fir beetle infestation in the North Fork Clearwater River drainage, Idaho--1972

Creator:: McGregor, Mark D., Bousfield, Wayne E., and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: The Douglas-fir beetle, Dendroctonus pseudotsugae Hopk., has caused extensive tree mortality for the third consecutive year in the North Fork Clearwater River drainage in northern Idaho. In 1972, the infestation encompassed about 494,080 acres of commercial forest lands in this drainage. It was estimated from a tw-stage aerial photo-ground survey...
Resource Type:: Technical Report
Full Text:: Report No. 1-72-10 5230 December 1972 EVALUATION OF THE DOUGLAS-FIR BEETLE INFESTATION IN THE

The analysis of the spatial attack pattern of an endemic Douglas-fir beetle population

Creator:: Hedden, Roy L., Gara, Robert I., U.S. International Biological Program. Coniferous Forest Biome, and University of Washington
Abstract:: The attack spatial pattern of the Douglas-fir beetle, Dendroctonus pseudotsugae Hopkins was shown to be regular within a given subarea of bark on its host, Pseudotsugae menziesii (Mirb.) Franco. Empirical arguments were advanced which indicated the uniform spacing of attacks was the result of a beetle controlled spacing mechanism dependent...
Resource Type:: Technical Report
Full Text:: PATTERN OF AN ENDEMIC DOUGLAS-FIR BEETLE POPULATION ABSTRACT The attack spatial pattern of the Douglas

The analysis of the attack distribution of an endemic Douglas-fir beetle population

Creator:: Hedden, Roy L., Gara, Robert I., U.S. International Biological Program. Coniferous Forest Biome, and University of Washington
Abstract:: Felled second-growth Douglas-fir trees in western Washington were used to determine the attack distribution and develop a sampling technique for an endemic Douglas-fir beetle, Dendroctonue peeudotaugae Hopk. (Coleoptera: Scolytidae) population. The attack density varied by circumferential position. The lowest density was on the upper bole and the highest on one...
Resource Type:: Technical Report
Full Text:: DISTRIBUTION OF AN ENDEMIC DOUGLAS-FIR BEETLE POPULATION ABSTRACT Felled second-growth Douglas-fir trees in

ScholarsArchive@OSU

Effect of competition on survival in western Oregon of the Douglas-fir beetle : Dendroctonus pseudotsugae Hopkins (Coleoptera: Scolytidae)

Evaluation of the Douglas-fir beetle infestation : North Fork Clearwater River drainage, northern Idaho, 1970-73

Douglas-fir beetle population assessment : Idaho Panhandle National Forests, 2000

Analysis of Douglas-fir beetle population dynamics from aerial survey data using group size analysis

Evaluation of Douglas-fir beetle infestations, North Fork Clearwater River Drainage, Idaho, 1974

Douglas-fir beetle population assessment : Idaho Panhandle National Forests

Evaluation of Douglas-fir mortality from Douglas-fir beetle from 1982 through 1984 following MCH application

Evaluation of the Douglas-fir beetle infestation in the North Fork Clearwater River drainage, Idaho--1972

The analysis of the spatial attack pattern of an endemic Douglas-fir beetle population

The analysis of the attack distribution of an endemic Douglas-fir beetle population

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