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Early stages in plant succession on Douglas fir clearcuts on the Mary's Peak watershed near Corvallis, Oregon

Creator:: Brown, Eugene Allen
Abstract:: This study has been concerned with the patterns of vegetative changes which occur during the first five years following logging and burning on Douglas-fir clear cuts. Knowledge of the successional sequence in the coastal forests of western Oregon is of primary importance to those concerned with the management of this...
Resource Type:: Masters Thesis

Characterization of selected plant communities within the Tillamook Burn in northwestern Oregon

Creator:: Bailey, Arthur W.
Abstract:: A study was initiated in 1961 to characterize seral plant communities in a part of the Cedar Creek drainage in the Tillamook Burn. Stratification of vegetation into ecological units was a necessary first step in conifer-animal damage studies supported by the Oregon State Game Commission. Reconnaissance information was recorded in...
Resource Type:: Masters Thesis

The phytosociology of some vine maple communities in the Marys Peak watershed

Creator:: Anderson, Howard George
Abstract:: A study was undertaken in the Marys Peak watershed with the following objectives. First, a classification of the major plant communities was carried out. Second, some of the ecological features of Acer circinatum that account for its distribution within these communities were determined. The following plant communities are described: Corylus...
Resource Type:: Masters Thesis

Spatial and chronological patterns of Purshia tridentata as influenced by Pinus ponderosa overstory

Creator:: Sherman, Robert James
Abstract:: Twelve sites of uniform topography and soils were selected in the Pinus ponderosa/Purshia tridentata/Festuca idahoensis Association. These sites were located in the rain shadow on the east flank of the Oregon Cascades. A fire history in the form of fire scars on ponderosa pine was available for nine of these...
Resource Type:: Masters Thesis

The influence of tree cover and shade pattern upon the distribution of understory plants in ponderosa pine stands of central Oregon

Creator:: Robinson, Andrew Frederick, Jr.
Abstract:: Seven sites of uniform topography and soil were selected within a self perpetuating ponderosa pine forest found on the eastern flank of the central Oregon Cascades. These plots were located along a vegetational gradient caused mainly by an orographic rain shadow. Data gathered included density, frequency, and cover for all...
Resource Type:: Masters Thesis

Entrainment, transport, and deposition of large woody debris in streams : results from a series of flume experiments

Creator:: Braudrick, Christian A.
Abstract:: Although there has been extensive research on the geomorphic and ecologic role of large woody debris (LWD) in streams, the dynamics of LWD in streams are poorly known due to various measurement difficulties during floods. In this thesis I present the results of two flume experiments on the dynamics of...
Resource Type:: Masters Thesis

Juvenile development of Douglas-fir, red alder and snowbrush associations in Western Oregon

Creator:: El Hassan, Babiker Ahmed
Abstract:: The juvenile development of Douglas-fir, red alder and snowbrush associations was investigated in western Oregon. The relationship between Douglas-fir and red alder was studied and compared in the Coast, Willamette Valley and Cascade regions. Snowbrush- Douglas-fir stands were sampled in the western Cascades. Alder- Douglas-fir relationships were studied on clearcuts...
Resource Type:: Masters Thesis

Assessing the influence of silvicultural practices on Douglas-fir nutrition and stemwood production

Creator:: Reid, Paula W.
Abstract:: Nitrogen, phosphorus and sulfur concentrations were measured in the soil, foliage and litter of Douglas-fir growing in pure Douglas-fir and mixed conifer stands. On four sites of contrasting fertility and climatic conditions, plots had been modified by the introduction of alder, thinning, or by a single application of nitrogen fertilizer...
Resource Type:: Masters Thesis

Some factors affecting the distribution of organic arsenical silvicides in the forest ecosystem

Creator:: Greaves, Robert D.
Abstract:: The initial distribution of organic arsenical silvicides was measured in the trees, litter and soil of four forest types in the Pacific Northwest following a standard, precommercial chemical thinnning. Factors which influenced the persistence, movement or fate of these compounds were noted and used to evaluate differences in the generalized...
Resource Type:: Masters Thesis

Ectomycorrhizal populations on a chronosequence of disturbed areas in the central Cascades

Creator:: Meyer, Michele Marie
Abstract:: A greenhouse bioassay was used to investigate effects of natural and manmade disturbances on native ectomycorrhizal populations of Douglas-fir and western hemlock on a steep southeast slope in the west central Cascade Mountains. Total and mycorrhizal root tips were counted on seedlings grown in soils collected from (a) two 100+...
Resource Type:: Masters Thesis

ScholarsArchive@OSU

Early stages in plant succession on Douglas fir clearcuts on the Mary's Peak watershed near Corvallis, Oregon

Characterization of selected plant communities within the Tillamook Burn in northwestern Oregon

The phytosociology of some vine maple communities in the Marys Peak watershed

Spatial and chronological patterns of Purshia tridentata as influenced by Pinus ponderosa overstory

The influence of tree cover and shade pattern upon the distribution of understory plants in ponderosa pine stands of central Oregon

Entrainment, transport, and deposition of large woody debris in streams : results from a series of flume experiments

Juvenile development of Douglas-fir, red alder and snowbrush associations in Western Oregon

Assessing the influence of silvicultural practices on Douglas-fir nutrition and stemwood production

Some factors affecting the distribution of organic arsenical silvicides in the forest ecosystem

Ectomycorrhizal populations on a chronosequence of disturbed areas in the central Cascades

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