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A plant association classification for McDonald-Dunn Forest

Creator:: Hubbard, Connie J.
Abstract:: The purpose of this study was to develop a plant association classification for the mature coniferous forests of the McDonald and Paul M. Dunn Research Forests. A secondary objective was to quantify diversity within the plant associations. This Forest is approximately 11,000 acres and is located 6 miles to the...
Resource Type:: Masters Thesis

The effect of riparian buffer strips on salmonberry (Rubus spectabilis) community structure in alder stands of the Oregon Coast Range

Creator:: Froyd, Cynthia A.
Abstract:: Salmonberry community structure was examined in alder-dominated riparian buffer strips in the Oregon Coast Range. Salmonberry growing on slopes was found to respond differently, to both characteristics of the buffer strips and to environmental factors, than salmonberry growing on terraces. Salmonberry, as measured by total height, number of ramets or...
Resource Type:: Masters Thesis

Relationships between plant associations and environment within McDonald-Dunn Forest

Creator:: Leavell, Daniel M.
Abstract:: I studied the relationship of environmental variables to six plant associations on McDonald and Paul M. Dunn Forests. Indirect gradient analysis was used to determine relationships. The plant associations were developed in a companion study by C.J. Hubbard (1991). McDonald-Dunn Forests are located north and northwest of Corvallis, Oregon. The...
Resource Type:: Masters Thesis

Influence of light on the growth of advance regeneration in the understory of Douglas-fir dominated forests in western Oregon

Creator:: Deisenhofer, Florian
Abstract:: The growth potential of Douglas-fir, grand fir and western hemlock advance regeneration in the forest understory of Douglas-fir-dominated forests was investigated to detennine the feasibility of selection cutting systems in northwest Oregon. This study compared the growth of Douglas-fir, grand fir and western hemlock advance regeneration along a light gradient...
Resource Type:: Masters Thesis
Full Text:: Western Oregon. . 1 Abstract approved: CL §19.o~tU~E: fr~ac~d for privacy. , .. - -4#/ William H. E

Effects of shrubs and herbs on conifer regeneration and microclimate in the Rhododendron-Vaccinium-Menziesia community of south-central British Columbia

Creator:: Coates, K. Dave
Abstract:: A field study was established to determine the impact of interfering vegetation on survival and growth of Engelmann spruce (Piceaeigelmannii Parry) and lodgepole pine (Pinus contorta var contorta Dougi.) at a site in the high elevation Engelmann spruce-Subalpine fir (ESSF) zone, of south-central British Columbia. The study examined (1) the...
Resource Type:: Masters Thesis
Full Text:: South- Central British Columbia. Abstract approved: (A) Signature redacted for privacy. ut William H

Stocking and growth of noble fir in the Cascade Mountains of Oregon and Washington

Creator:: Thomas, Theodore Bruce
Abstract:: Stocking levels and height growth rates of noble fir and associated species were measured on 51 clearcut study areas within the Pacific silver fir zone of the Oregon and Washington Cascades. Clearcut study areas were approximately 20 years old and had either planted noble fir or natural regeneration of noble...
Resource Type:: Masters Thesis

Post-eruption species selection and planting trials for reforestation of sites near Mount St. Helens

Creator:: Logan, Sheila E.
Abstract:: The 1980 eruptions of Mount St. Helens damaged or destroyed vegetation on more than 66,100 hectares (270,000 acres) within the Gifford Pinchot National Forest. The effects of the eruption on planting sites and seedling performance were unknown. Regeneration of "cut over" lands near Mount St. Helens has historically been limited...
Resource Type:: Masters Thesis

Pruning young Douglas-fir (Pseudotsuga menziesii [mirb.] Franco) in a western Oregon agroforestry setting : changes in tree water relations and effects on forage production

Creator:: Withrow-Robinson, Bradford A.
Abstract:: There is renewed interest in agroforestry as a management strategy for marginal agricultural lands in western Oregon. Silvopastoral systems combine tree and forage production, which involve crops and practices familiar to the area. The objective of this study was to determine how management influences the physiology and ecological interactions of...
Resource Type:: Masters Thesis

Tree and crop productivity and soil organic matter changes as influenced by Leucaena hedge-row management in sub-humid India

Creator:: Singh, Rajive K.
Abstract:: The overall objective of this study was to evaluate biomass production and soil ameliorative potential of alley farming in sub-humid India. Effect of the cutting height (40, 80, 120, 160 cm) of Leucaena hedges and root barriers on biomass yield of Leucaena and maize and wheat crops were examined. Trees...
Resource Type:: Dissertation

Growth and yield, structure, composition, and soil compaction in a Western Oregon Douglas-fir forest after 35 years of modified selection thinning

Creator:: Stringer, Darin S.
Abstract:: Modified selection thinning has been utilized by some non-industrial foresters in Douglas-fir forests of Western Oregon and Washington for at least 35 years. This silvicultural strategy has not been tested, but has often been associated with reduced volume production and other undesirable effects. It continues to be used on many...
Resource Type:: Masters Thesis

ScholarsArchive@OSU

A plant association classification for McDonald-Dunn Forest

The effect of riparian buffer strips on salmonberry (Rubus spectabilis) community structure in alder stands of the Oregon Coast Range

Relationships between plant associations and environment within McDonald-Dunn Forest

Influence of light on the growth of advance regeneration in the understory of Douglas-fir dominated forests in western Oregon

Effects of shrubs and herbs on conifer regeneration and microclimate in the Rhododendron-Vaccinium-Menziesia community of south-central British Columbia

Stocking and growth of noble fir in the Cascade Mountains of Oregon and Washington

Post-eruption species selection and planting trials for reforestation of sites near Mount St. Helens

Pruning young Douglas-fir (Pseudotsuga menziesii [mirb.] Franco) in a western Oregon agroforestry setting : changes in tree water relations and effects on forage production

Tree and crop productivity and soil organic matter changes as influenced by Leucaena hedge-row management in sub-humid India

Growth and yield, structure, composition, and soil compaction in a Western Oregon Douglas-fir forest after 35 years of modified selection thinning

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