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Changes in small-mammal populations related to abundance of Douglas-fir seed

Creator:: Hooven, Edward F. (Edward Frank) and Oregon State University. Forest Research Laboratory
Resource Type:: Technical Report
Full Text:: important problem faced by forest managers in the Douglas-fir forests of western Oregon. The forest manager

Population dynamics of the Douglas-fir cone moth, Barbara colfaciana (Kft.) (Lepidoptera:Olethreutidae)

Creator:: Nebeker, T. Evan
Abstract:: A population of the Douglas-fir cone moth, Barbara colfaxiana (Kft. ), was studied on the Buckhead Seed Production Area, Oakridge, Oregon, during 1971 and 1972. A method of estimating cone and insect populations is presented. Factors contributing to the mortality of B. colfaxiana are discussed, with resinosis being the critical...
Resource Type:: Dissertation
Full Text:: , Oregon, during 1971 and 1972. A method of estimating cone and insect populations is presented. Factors

Degradation of phenolic components of Douglas-fir bark by fungi

Creator:: Ross, William David, 1937-
Resource Type:: Dissertation
Full Text:: the location and general nature of cell wall lignin are described for Douglas-fir bark. Fungal

Some silvicultural impacts of Phellinus weirii on a managed forest in the interior Coast Range of Oregon

Creator:: Lawson, Thomas Taylor
Abstract:: Phellinus weirii, the cause of laminated root rot, is considered the most destructive root rot of Douglas-fir, but little is known about the damage it causes, to a forest. The objective of this study was to determine silvicultural impacts of P. weirii on a managed forest. A survey located and...
Resource Type:: Masters Thesis

Comparison of Phellinus weirdi root rot damage in a 60-year-old Douglas-fir (Pseudotsuga menziesii) stand with the damage in the preceding old-growth stand

Creator:: Tkacz, Borys M.
Abstract:: Laminated root rot of Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) caused by the fungus Phellinus weirii (Murr.)Gilbertson was studied in two successive stands in the Oregon Coast Range. Damage due to the disease in a 60-year-old second-growth stand was compared with incidence in the preceding 300-year-old stand on the same site....
Resource Type:: Masters Thesis
Full Text:: annual loss of 32 million cubic feet of timber in the Douglas-fir region of Oregon and Washington

The role of ethylene in ectomycorrhiza formation and Fusarium infection of Douglas fir roots

Creator:: Graham, James Herbert
Abstract:: The ectomycorrhizal fungi Cenococcum geophilum, Hebeloma crustuliniforme and Laccaria laccata produced ethylene in vitro in modified Melin-Norkrans liquid medium only if amended with 2.5 to 10 mM methionine; Pisolithus tinctorius failed to produce ethylene unless the cultures were renewed with fresh methionine-amended medium prior to ethylene assay. An additional 19...
Resource Type:: Dissertation
Full Text:: ROLE OF ETHYLENE IN ECTOMYCORRHIZA FORMATION AND FUSARIUM INFECTION OF DOUGLAS-FIR ROOTS Redacted

Potential Douglas-fir tussock moth damage in northern Idaho in 1974 based on a 1973 fall egg mass survey

Creator:: Tunnock, Scott and Livingston, R. Ladd
Abstract:: An epidemic of Douglas-fir tussock moth was detected in northern Idaho in 1972. In 1973, aerial surveys showed that nearly 100,000 acres contained various degrees of visible defoliation. An egg mass survey of five reporting units made in the fall of 1973 determined potential for damage in 1974. Based on...
Resource Type:: Technical Report
Full Text:: . E., G. C. Trostle, and P. E. Buffam, 1971. Douglas-fir tussock moth. USDA Forest Serv., Forest Pest

Potential for defoliation by western spruce budworm in Douglas-fir stands in Montana, 1976

Creator:: Tunnock, Scott, Flavell, Thomas H., Meyer, Hubert E., and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: Aerial surveys of six Montana National Forests in 1975 found a 22.1% increase in the area of visible defoliation caused by the western spruce budworm. It is estimated that 2,278,804 acres of Douglas-fir forests are now suffering at least 25% defoliation. This is an increase of 503,706 acres over the...
Resource Type:: Technical Report
Full Text:: The western spruce budworm, Choristoneura occidentalis Freeman, is a native pest of Douglas-fir

Natural mortality in a Douglas-fir tussock moth infestation in Idaho, 1974

Creator:: Tunnock, Scott, McGregor, Mark D., Lood, Rudolph C., and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: Mortality from various causes was recorded in a Douglas-fir tussock moth, Orgyia pseudotsugata McD., outbreak southeast of Coeur d'Alene, Idaho, in 1974. Observations began June 27 when about 50 percent of the larvae were second instars and continued until pupation. Within a 35-day period, there was a 93 percent average...
Resource Type:: Technical Report
Full Text:: Douglas-fir tussock.moth in Oregon and California, USDA, Forest Serv., Pac. NW Forest and Range Expt. Sta

Potential for defoliation by western spruce budworm in Douglas-fir stands in eastern Montana, 1975

Creator:: Tunnock, Scott, United States. Forest Service. Northern Region. Forest Environmental Protection, and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: Aerially visible defoliation by the western spruce budworm, Choristoneura occidentalis Freeman, increased from 149,250 acres in 1973 to 649,319 acres in 1974 on five eastern Montana National Forests. An egg mass survey during the fall of 1974 predicted that additional defoliation will occur in 1975 on 47 of 48 plots...
Resource Type:: Technical Report
Full Text:: aerially visible defoliation in Douglas-fir stands on the Beaverhead, Deerlodge, Gallatin, Helena, and

ScholarsArchive@OSU

Changes in small-mammal populations related to abundance of Douglas-fir seed

Population dynamics of the Douglas-fir cone moth, Barbara colfaciana (Kft.) (Lepidoptera:Olethreutidae)

Degradation of phenolic components of Douglas-fir bark by fungi

Some silvicultural impacts of Phellinus weirii on a managed forest in the interior Coast Range of Oregon

Comparison of Phellinus weirdi root rot damage in a 60-year-old Douglas-fir (Pseudotsuga menziesii) stand with the damage in the preceding old-growth stand

The role of ethylene in ectomycorrhiza formation and Fusarium infection of Douglas fir roots

Potential Douglas-fir tussock moth damage in northern Idaho in 1974 based on a 1973 fall egg mass survey

Potential for defoliation by western spruce budworm in Douglas-fir stands in Montana, 1976

Natural mortality in a Douglas-fir tussock moth infestation in Idaho, 1974

Potential for defoliation by western spruce budworm in Douglas-fir stands in eastern Montana, 1975

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