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Cooley spruce gall adelgid control in Douglas-fir Christmas tree plantations, Oregon, 1986

Creator:: Regan, Richard P. and Fisher, Glenn C.
Resource Type:: Conference Proceeding
Full Text:: OR 97331 COOLEY SPRUCE GALL ADELGID CONTROL IN DOUGLAS-FIR CHRISTMAS TREE PLANTATIONS, OREGON, 1986

The infection and colonization of Douglas-fir needles by the Swiss needle cast pathogen, Phaeocryptopus gaeumannii (Rhode) Petrak

Creator:: Capitano, Bryan R.
Abstract:: Phaeocryptopus gaeumannii is a pathogenic fungus on Douglas-fir needles which has become a serious threat to timber production in the last decade along the Oregon coast This research was undertaken to describe the general biology and pathology of F. gaeumannii on Douglas-fir needles and how environmental variables affect fungal development....
Resource Type:: Masters Thesis
Full Text:: on and within Douglas-fir needles or how environmental factors affect disease development. This

Arthropod community structure in regenerating Douglas-fir and red alder forests : influences of geography, tree diversity and density

Creator:: Schaerer, Brett L.
Abstract:: The structuring of canopy arthropod communities was reviewed and investigated in relation to tree species diversity and its component factors, interspersion of different species and density of each tree species. Fifteen treatments of Douglas-fir (Pseudotsuga menziesii) and red alder (Alnus rubra) (various densities and proportions of each) were randomly assigned...
Resource Type:: Masters Thesis
Full Text:: Arthropod community structure in regenerating Douglas-fir and

Effects of Phellinus weirii on plant community composition and succession of mature and old-growth Douglas-fir forests

Creator:: Holah, Jennifer C.
Abstract:: Disease is often overlooked as a natural disturbance agent in plant communities. This study examines what effects, if any, a disease-mediated disturbance has on the plant community as a whole in old-growth and mature forests of western Oregon. Phellinus weirii (Murrill) Gilbertson (Family: Hymenochaetaceae) is a native root-rotting pathogen that...
Resource Type:: Masters Thesis

Host suitability studies of Douglas-fir and white alder to the gypsy moth

Creator:: Joseph, Gladwin
Abstract:: Douglas-fir, Pseudotsuga menziesii and white alder, Alnus rhombifolia, species that are prevalent in the Pacific Northwest, were fed to larvae of the gypsy moth, Lymantria dispar L. Gypsy moth larvae from different familial lines (egg masses) from a single geographic population were evaluated on these hosts. The larvae were fed...
Resource Type:: Masters Thesis
Full Text:: -FIR AND WHITE ALDER TO THE GYPSY MOTH by Gladwin Joseph A THESIS submitted to Oregon State

The relationship of Douglas-fir dwarf mistletoe (Arceuthobium douglasii) to environmental and stand conditions and plant communities in the southern Oregon Cascades

Creator:: Marshall, Katrina
Abstract:: This study examined the relationships between the frequency of occurrence and severity of Douglas-fir dwarf mistletoe (Arceuthobium douglasii Engelmann), environmental and stand conditions, and plant communities in the Southern Oregon Cascade Mountain Province. Data for the study was collected from the same ecology plots that were previously used to define...
Resource Type:: Masters Thesis

Early testing of Douglas-fir (Pseudotsuga menziesii var. menziesii (Mirb.) Franco) for Swiss needle cast tolerance

Creator:: Temel, Fatih
Abstract:: The relationship between the level of Phaeocryptopus gaeumannii (Rohde) Petrak colonization and severity of Swiss needle cast (SNC) symptoms, the possibility of early testing of Douglas-fir (Pseudotsuga menziesii var. menziesii [Mirb.] Franco) for SNC tolerance, and geographic variation in coastal Oregon with respect to SNC tolerance were investigated. Comparisons between...
Resource Type:: Dissertation

Spatial and temporal dynamics of the Douglas-fir bark beetle (Dendroctonus pseudotsugae, Hopk.) in the Detroit Ranger District, Oregon : a landscape ecology perspective

Creator:: Powers, Jennifer Sarah
Abstract:: I developed a conceptual model of Douglas-fir bark beetle dynamics and associated host mortality across spatial and temporal scales. I proposed that a hierarchy of factors influence host resistance to attack at different spatial scales. I then tested this model by measuring the association between the occurrence of beetle-kill and...
Resource Type:: Masters Thesis
Full Text:: autocorrelation functions for Douglas-fir beetle activity in Oregon (acres affected) 80 4.5 Autocorrelation and

The effects of mechanical damage on residual coastal Douglas-fir (Pseudotsuga menziesii [Mirbel] Franco) following commercial thinning

Creator:: Kiser, James D.
Abstract:: Commercial thinning operations can result in damage to residual stems. A literature review revealed that little was known about the effects of residual logging wounds with regard to rotation-age commercial conifers, particularly Douglas-fir. An experiment to examine fungal colonization of Douglas-fir following logging damage showed that while damage was significant...
Resource Type:: Dissertation
Full Text:: : Histochemical and geometric alterations of sapwood in coastal Douglas-fir (Pseudotsuga menziesii [Mirbel

Effects of fertilization, vegetation control, and sulfur on swiss needle cast and growth of coastal Douglas-fir saplings

Creator:: Crane, Gabriel A.
Abstract:: A series of studies and replicated field sites were implemented in the Oregon Coast Range within Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) sapling plantations infected with varying levels of Swiss needle cast (SNC) caused by the fungus, Phaeocryptopus gaeumannii (Rhode) Petrak (PG). This research was conducted to understand the effects of...
Resource Type:: Masters Thesis
Full Text:: of studies and replicated field sites were implemented in the Oregon Coast Range within Douglas-fir

ScholarsArchive@OSU

Cooley spruce gall adelgid control in Douglas-fir Christmas tree plantations, Oregon, 1986

The infection and colonization of Douglas-fir needles by the Swiss needle cast pathogen, Phaeocryptopus gaeumannii (Rhode) Petrak

Arthropod community structure in regenerating Douglas-fir and red alder forests : influences of geography, tree diversity and density

Effects of Phellinus weirii on plant community composition and succession of mature and old-growth Douglas-fir forests

Host suitability studies of Douglas-fir and white alder to the gypsy moth

The relationship of Douglas-fir dwarf mistletoe (Arceuthobium douglasii) to environmental and stand conditions and plant communities in the southern Oregon Cascades

Early testing of Douglas-fir (Pseudotsuga menziesii var. menziesii (Mirb.) Franco) for Swiss needle cast tolerance

Spatial and temporal dynamics of the Douglas-fir bark beetle (Dendroctonus pseudotsugae, Hopk.) in the Detroit Ranger District, Oregon : a landscape ecology perspective

The effects of mechanical damage on residual coastal Douglas-fir (Pseudotsuga menziesii [Mirbel] Franco) following commercial thinning

Effects of fertilization, vegetation control, and sulfur on swiss needle cast and growth of coastal Douglas-fir saplings

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