Index Catalog // ScholarsArchive@OSU

Elucidating Key Aspects of the Biology of Select Species of Snail-killing Flies (Diptera: Sciomyzidae) in Oregon

Creator:: Alzahrani, Fares
Abstract:: Members of the family Sciomyzidae, known as snail-killing or marsh flies, are unique amongst insects in that the vast majority of reared species feed exclusively on mollusks and as a result their biological control potential has been well documented in the scientific literature. However, in North America there is a...
Resource Type:: Masters Thesis
Full Text:: members, Dr. Andrew Hulting, Dr. Gail Langellotto, and Dr. Klaus Puettmann for their encouragement

Competitive interactions in young, coastal Douglas-fir/red alder mixtures : implications for wood quality

Creator:: Grotta, Amy T.
Abstract:: When Douglas-fir and red alder grow in mixture, interactions between the two species can be competitive, facilitative, or a combination of both over time. A number of factors have recently led to increased interest in managing these two species together for commercial production, and ongoing investigations are yielding important information...
Resource Type:: Masters Thesis

Crown structure, stand dynamics, and production ecology of two species mixtures in the central Oregon Cascades

Creator:: Garber, Sean M.
Abstract:: Knowledge of stand structure, stand dynamics, and production ecology of species mixtures lags well behind that of single-species, even-aged stands. Two mixed-species spacing trials in central Oregon allowed investigation of mixed-species dynamics in a controlled experimental setting. The first site, Pringle Butte, is a mixture of ponderosa pine (Pinus ponderosa...
Resource Type:: Masters Thesis
Full Text:: , Drs. J. Renee Brooks, Klaus Puettmann, and Eric Hansen for their support, helpful comments, and

Distribution, habitat associations, and conservation status of Pacific fisher (Pekania pennanti) in Oregon.

Creator:: Barry, Brent R.
Abstract:: Fishers (Pekania pennanti) are medium sized mustelids endemic to North America. Two fisher populations persist in Oregon: an indigenous population in southwestern Oregon, and a reintroduced population in the southern Cascade Mountains. Despite candidacy for listing under the Endangered Species Act, current information on fisher populations in Oregon is scarce....
Resource Type:: Masters Thesis
Full Text:: detected south of the known reintroduced population area for the first time (J. Stevens, Bureau of Land

Sources of Soil Carbon Loss from Soil Density Fractionation: Soluble Pools or Methodology?

Creator:: Gordon, Ester K.
Abstract:: Soil is the largest terrestrial store of carbon (C) making it a critical component of the global C cycle. To model global carbon budgets more accurately we need to understand dynamics and turnover of the many different functional soil C pools that exist in soil. Many different methods are used...
Resource Type:: Masters Thesis
Full Text:: . Materials and Methods 2.1 Site description The H J Andrews Experimental Forest is located in the

Assessment of the Impact of Forest Management Activities on Forest Aesthetics Using Photogrammetric Point Clouds

Creator:: Begay, Bryan E.
Abstract:: The public concern for clearcutting in the United States in the 1970s pushed for changes in the natural resources policies. A facet of forest management that came under scrutiny was forest aesthetics. Therefore, the aim of this study is to assess the impact of harvest designs on stand aesthetics using...
Resource Type:: Masters Thesis
Full Text:: outlined in this thesis. Dr. Klaus Puettmann and Dr. Lisa Ganio also deserve recognition for their

Winter Squash: Production and Storage of a Late Winter Local Food

Creator:: Wetzel, Jennifer D.
Abstract:: Winter squash is an important late winter vegetable crop for local and regional markets; however, farmers in western Oregon report that this crop is marginally profitable due to losses in storage and relatively low yields for the high culinary value kabocha and buttercup types. In order to increase the sales...
Resource Type:: Masters Thesis

The Effect of Sill Height on Decay in Air-Seasoning Crossties

Creator:: Rogers, Leon R.
Abstract:: The sustainable use of wood for rail ties requires chemical treatment to increase service life and maintain structural integrity. Treatment can only be applied after lengthy air-seasoning to reduce moisture content in wood, but seasoning leaves ties exposed to attack by decay fungi for up to a year. One factor...
Resource Type:: Masters Thesis
Full Text:: : ___________________________________ Jeffrey J. Morrell The sustainable use of wood for rail ties requires chemical

Assessing the impact of garden education programs on motivational engagement and academic achievement

Creator:: Gupta, Abha
Abstract:: School garden programs have become increasingly popular for their diverse, positive benefits. School gardens are often promoted as a relatively low cost means to offer hands-on learning opportunities that may foster academic achievement, particularly in the sciences, however only six studies have been published on the impact of garden education...
Resource Type:: Masters Thesis

An Investigation of soil, vegetation and mycorrhizal characteristics associated with native grass re-esablishment in crested wheatgrass seedings

Creator:: Raven, Karen A.
Abstract:: Since the 1930's, many fields on the Crooked River National grasslands have been seeded to crested wheatgrass (Agropyron desertorum). While some of these fields remain dominated by crested wheatgrass others had a greater presence of deep rooted native perennial grasses such as bluebunch wheatgrass (Pseudoroegneria spicata). Twenty eight fields previously...
Resource Type:: Masters Thesis
Full Text:: been most fortunate to have Dr. Klaus Puettmann as my graduate representative from the start of my

ScholarsArchive@OSU

Elucidating Key Aspects of the Biology of Select Species of Snail-killing Flies (Diptera: Sciomyzidae) in Oregon

Competitive interactions in young, coastal Douglas-fir/red alder mixtures : implications for wood quality

Crown structure, stand dynamics, and production ecology of two species mixtures in the central Oregon Cascades

Distribution, habitat associations, and conservation status of Pacific fisher (Pekania pennanti) in Oregon.

Sources of Soil Carbon Loss from Soil Density Fractionation: Soluble Pools or Methodology?

Assessment of the Impact of Forest Management Activities on Forest Aesthetics Using Photogrammetric Point Clouds

Winter Squash: Production and Storage of a Late Winter Local Food

The Effect of Sill Height on Decay in Air-Seasoning Crossties

Assessing the impact of garden education programs on motivational engagement and academic achievement

An Investigation of soil, vegetation and mycorrhizal characteristics associated with native grass re-esablishment in crested wheatgrass seedings

Limit your search

Academic Affiliation

Advisor

Commencement Year

Committee Member

Creator

Contributor

Date

Decade

Degree Field

Degree Level

Degree Name

Language

License

Non-Academic Affiliation

Peer Reviewed

Resource Type

Rights Statement

Subject

Search Constraints

Search Results

Limit your search