Index Catalog // ScholarsArchive@OSU

Microbial community structure as influenced by season and stand age in a Douglas-fir (Pseudotsuga menziesii) ecosystem

Creator:: Kucera, Jennifer Moore
Abstract:: Forest harvest can have significant impacts on forest ecosystems that may influence the capacity of soils to sequester carbon (C). The microbial community controls decomposition, which is a critical process in partitioning litter- and root-C between CO₂ and storage in semi-permanent soil-C pools. The objectives of this study were to...
Resource Type:: Dissertation
Full Text:: decomposition. The experiment was conducted in Douglas-fir ecosystems within the Gifford Pinchot National

The water and energy dynamics of an old-growth seasonal temperate rainforest

Creator:: Link, Timothy E.
Abstract:: In the Pacific Northwest (PNW), concern about the impacts of climate and land cover change on water resources, flood-generating processes, and ecosystem dynamics emphasize the need for a mechanistic understanding of the interactions between forest canopies and hydrological processes. A detailed measurement and modeling program during the 1999 and 2000...
Resource Type:: Dissertation

The influence of canopy structure and epiphytes on the hydrology of Douglas-fir forests

Creator:: Pypker, Thomas G.
Abstract:: Canopy structure has a significant impact on the canopy hydrology of Douglas-fir forests in the Pacific Northwest (PNW). Whole canopy rainfall interception was measured for young Douglas-fir forest and compared to an old-growth Douglas-fir forest. The old-growth forest had significantly greater canopy water storage capacity (5) and direct throughfall fraction...
Resource Type:: Dissertation

Effects of spatially dispersed green-tree retention on ectomycorrhiza diversity

Creator:: Kolaczkowski, Oralia
Abstract:: The Demonstration for Ecosystem Management Options (DEMO) study originated out of the changing management priorities associated with federal forest lands in the Pacific Northwest which included an objective to maintain mature and old-growth forest characteristics in managed stands. The DEMO project examines the effects that different levels and patterns of...
Resource Type:: Masters Thesis

Structural factors affecting wear of cobalt base hard facing alloys

Creator:: Gifford, Raymond Warren
Abstract:: This paper is a metallurgical study of the microstructure of a cobalt base hard facing alloy to determine the cause for inconsistant wear properties. Wear tests on a Stellite 6 alloy, deposited using oxyacetylene welding techniques, resulted in a wide range of weight losses. Microscopic examination has revealed the probable...
Resource Type:: Masters Thesis
Full Text:: facing alloys AN ABSTRACT OF THE THESIS OF Raymond Warren Gifford for the Master of Science in

An assessment of the reciprocal effect of high school senior low achievers tutoring freshman low achievers in English classes

Creator:: Werth, Trostel Gifford
Abstract:: The purpose of this study was to compare the effectiveness of a tutoring program and a traditional program in improving achievement for students registered in low achiever English classes in reading comprehension, language usage skills and spelling as well as student interest in the study of English. For this study...
Resource Type:: Dissertation
Full Text:: TROSTEL GIFFORD WERTH (Name) in EDUCATION (Major) for the ED. D. presented on (Degree) ) kct

An assessment of a closed greenhouse aquaculture and hydroponic system

Creator:: Head, William, 1946-
Resource Type:: Dissertation

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

Ecology of Corydalis aquae-gelidae, a rare riparian plant

Creator:: Goldenberg, Douglas M.
Abstract:: Corydalis aquae-gelidae is a large herbaceous perennial in the Fumariaceae that has high habitat specificity. It is endemic to the western Cascade Range of Oregon and Washington, almost entirely on the Mt. Hood and Gifford Pinchot National Forests. It is a federal C2 candidate under the Endangered Species Act and...
Resource Type:: Masters Thesis
Full Text:: Oregon and Washington, almost entirely on the Mt. Hood and Gifford Pinchot National Forests. It is a

ScholarsArchive@OSU

Microbial community structure as influenced by season and stand age in a Douglas-fir (Pseudotsuga menziesii) ecosystem

The water and energy dynamics of an old-growth seasonal temperate rainforest

The influence of canopy structure and epiphytes on the hydrology of Douglas-fir forests

Effects of spatially dispersed green-tree retention on ectomycorrhiza diversity

Structural factors affecting wear of cobalt base hard facing alloys

An assessment of the reciprocal effect of high school senior low achievers tutoring freshman low achievers in English classes

An assessment of a closed greenhouse aquaculture and hydroponic system

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

Ecology of Corydalis aquae-gelidae, a rare riparian plant

Limit your search

Academic Affiliation

Advisor

Commencement Year

Committee Member

Creator

Date

Decade

Degree Field

Degree Level

Degree Name

File Format

Language

License

Non-Academic Affiliation

Peer Reviewed

Resource Type

Rights Statement

Subject

Search Constraints

Search Results

Limit your search