Index Catalog // ScholarsArchive@OSU

The phytotoxic effects of herbicide and adjuvant application by physiological timing on the woody shrub salal (Gaultheria shallon)

Creator:: Downs, Theodore
Abstract:: Salal is plant species that is native to forestland throughout the PNW and northern California that has been identified as a competitor to early crop tree development. This study consisted of a field and a radioisotope laboratory study to test four commonly used herbicides on salal (imazapyr, triclopyr, glyphosate, and...
Resource Type:: Masters Thesis
Full Text:: : John Tappeiner Salal is plant species that is native to forestland throughout the PNW and northern

Temporal and spatial variability of historic fire frequency in the southern Willamette Valley foothills of Oregon

Creator:: Robbins, Danielle
Abstract:: A crossdated fire history was reconstructed for a 1562 km2 area in the southern Willamette foothills of Oregon, using fire scars and tree origin years from twelve sites. The purpose of this study was to determine fire frequency for each site and to quantify temporal and spatial variability of fire...
Resource Type:: Masters Thesis
Full Text:: . Abstract approved: ________________________ _ John C. Tappeiner II A crossdated fire history was

The clonal development of vine maple during Douglas-fir stand development in the Coast Range of Oregon

Creator:: O'Dea, Mary E.
Abstract:: Natural Douglas-fir stand development is the result of many types of disturbance, both natural and management induced. The magnitude and timing of these disturbances have profound effects on the structure and composition of both the overstory and understory plant communities. Vine maple responds to disturbance by basal sprouting, layering, producing...
Resource Type:: Masters Thesis

Branch diameter and wood density of young western hemlock (Tsuga heterophylla (Raf.) Sarg.) grown at several spacings

Creator:: DeBell, Jeffrey D.
Resource Type:: Masters Thesis

The development of leaf area and biomass in the whiteleaf manzanita (Arctostaphylos viscida Parry.) brushfields of southwest Oregon

Creator:: Latt, Christopher R.
Abstract:: Arctostanhylos viscida is a broad-leaved, evergreen, sclerophylbus shrub which grows in northern California and the Siskiyou Mountain region of southwest Oregon. After site disturbance, A. viscida competes with conifer regeneration, and may dominate a site for ninety years. This study examined the rate at which full site occupancy occurs in...
Resource Type:: Masters Thesis

Douglas-fir, grand fir and plant community regeneration in three silvicultural systems in western Oregon

Creator:: Ketchum, J. Scott
Abstract:: Douglas-fir and grand fir seedling establishment and plant community regeneration were examined in a western Oregon forest following harvest in three different silvicultural systems: clearcut, two-story and patchcut. The two-story system consisted of removing all but 10 to 12 trees per acre. The patchcut system consisted of harvesting 1/2 acre...
Resource Type:: Masters Thesis

Germination and first-year survival of red alder seedlings in the central Coast Range of Oregon

Creator:: Haeussler, Sybille
Abstract:: The role of disturbance in seed germination and first-year survival of red alder (Alnus rubra) was studied over two growing seasons at four sites representing a climatic gradient within the central Coast Range of Oregon. Disturbance affected red alder seed germination and seedling establishment by altering the temperature and moisture...
Resource Type:: Masters Thesis

Comparing structure and development of Douglas-fir old-growth, plantations, and young natural forests in western Oregon

Creator:: Dowling, Christopher D.
Abstract:: Ages, diameter growth, density, tree size, and species were studied in old-growth, plantation, and young natural Douglas-fir stands in three areas in western Oregon: the western and eastern Coast Range and the western Cascades. The purpose was to compare the development of these three stand types and to determine whether...
Resource Type:: Masters Thesis

Regeneration of salal : seedling establishment and the effects of overstory stand density on clonal morphology and expansion

Creator:: Huffman, David W. (William), 1962-
Abstract:: Regeneration of salal (Gaultheria shallon Pursh.) in the Coast Range of western Oregon was examined over two growing seasons in a three part study consisting of seedling establishment, clone excavation, and population sampling experiments. The effects of study site location, overstory stand density, and substrate on seedling emergence and survival...
Resource Type:: Masters Thesis

Morphological characteristics of ponderosa pine and lodgepole pine regeneration nine years after stand density reduction at three sites in central Oregon

Creator:: Michel, Alexa K.
Abstract:: Without the natural occurrence of fire in ponderosa pine forests of the western US, lodgepole pine has started to dominate regeneration in many forest stands and may be gradually replacing ponderosa pine over time. This development, however, conflicts with recent efforts in this region to restore old-aged, open ponderosa pine...
Resource Type:: Masters Thesis
Full Text:: . Signature redacted for privacy. ?JQ C> ···~ ✓ John C. Tappeiner II Without the natural occurrence of

ScholarsArchive@OSU

The phytotoxic effects of herbicide and adjuvant application by physiological timing on the woody shrub salal (Gaultheria shallon)

Temporal and spatial variability of historic fire frequency in the southern Willamette Valley foothills of Oregon

The clonal development of vine maple during Douglas-fir stand development in the Coast Range of Oregon

Branch diameter and wood density of young western hemlock (Tsuga heterophylla (Raf.) Sarg.) grown at several spacings

The development of leaf area and biomass in the whiteleaf manzanita (Arctostaphylos viscida Parry.) brushfields of southwest Oregon

Douglas-fir, grand fir and plant community regeneration in three silvicultural systems in western Oregon

Germination and first-year survival of red alder seedlings in the central Coast Range of Oregon

Comparing structure and development of Douglas-fir old-growth, plantations, and young natural forests in western Oregon

Regeneration of salal : seedling establishment and the effects of overstory stand density on clonal morphology and expansion

Morphological characteristics of ponderosa pine and lodgepole pine regeneration nine years after stand density reduction at three sites in central Oregon

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