Index Catalog // ScholarsArchive@OSU

Multivariate Vegetation Mapping -- Code and Data

Creator:: Henderson, Emilie B.
Abstract:: This data set contains RCode designed for mapping correlated vegetation summary variables via univariate (modified random forest regression) and multivariate (random forest nearest neighbor) methods. It also contains a small vegetation plot dataset to illustrate the type of information needed to support such an analysis.
Resource Type:: Dataset

Diet overlap by DNA metabarcoding of mule deer, elk, and cattle in ponderosa pine forest of eastern Oregon

Creator:: Faber, M. Kate
Abstract:: Millions of acres of rangeland in the western U.S. is shared habitat by elk (Cervus canadensis), mule deer (Odocoileus hemionus), and cattle (Bos taurus). Potential competition between these ungulates for the same forage species can be understood from their diet composition. I used DNA metabarcoding methods with trnL primers to...
Resource Type:: Honors College Thesis
Full Text:: read abundance (RRA) metrics. Forbs were found to be major components in all ungulate diets

Drivers and Impacts of a Recent Annual Grass Invasion: Ventenata dubia and Fire in the Inland Northwest

Creator:: Tortorelli, Claire M.
Abstract:: Biological invasions threaten native biodiversity, alter ecosystem function, and are a major cause of economic losses across the planet. The most impactful invaders alter disturbance regimes and initiate state shifts to outside the historical range of variability of the ecosystem. Concern for ecological and economic losses has prompted a rapid...
Resource Type:: Dissertation

Variation of the Trowbridge's shrew (Sorex trowbridgii) diet across forest types in the Oregon Cascades

Creator:: Yates, Margaret E.
Abstract:: Investigating the insectivorous diet of the Trowbridge’s shrew (Sorex trowbridgii) across forest types can illustrate how forest management affects biotic communities. I used DNA metabarcoding methods with ANML primers to identify stomach and intestines contents from shrews caught in pitfall traps in the HJ Andrews Experimental Forest (HJA) and Willamette...
Resource Type:: Honors College Thesis
Full Text:: ) and constituted a large portion of the diet (mean RRA = 0.39). When comparing the mean relative read

How to write business plans for forest products companies

Creator:: Pepke, Edward King and United States. State and Private Forestry. Northeastern Area
Abstract:: A business plan is an essential tool in starting and managing a new or expanding venture. It is not only a comprehensive gathering of ideas and information on the potential business and its feasibility, but it is also a way of monitoring that business, once established. Business plans are important...
Resource Type:: Technical Report

The production potential of the Ingland-Jones Trailer Alp yarder in thinning young growth northwest conifers: a case study

Creator:: Neilson, Dennis Albert
Abstract:: Results of a recent production study indicate that a four man crew thinning young growth Douglas-fir [Pseudotsuga mensiezii (Mirb.) Franco] with an Iglarid-Jones Trailer Alp can produce 1360 to 1460 cubic feet (38 to 41 cubic metres; 8160 to 8750 bd. ft.,) per eight hour day on slopes of 10...
Resource Type:: Capstone Project

Fire effects on vegetation diversity, structure, and successional dynamics in shrub-steppe and mixed conifer environments of the Hells Canyon, Idaho

Creator:: Havlina, Douglas William
Abstract:: The effects of fire severity on post-fire succession and shrub demography were quantified in shrub-steppe grasslands and subalpine forests in the Hells Canyon of the Payette National Forest, Idaho. Following the 1988 Eagle Bar Fire, species frequency, community diversity, fire adaptations, and stand ages were quantified at 12 plots in...
Resource Type:: Masters Thesis
Full Text:: Purshia tridentatal Agropyron spicatum plant association at elevations < 1460 m. Because Purshia

A Review and Recommendations for Assessing Floodplain Vegetation Recovery Following Stage 0 and Beaver Dam Analog Restorations in the Pacific Northwest

Creator:: Colley, Lara K. M.
Abstract:: Floodplains are a significant and increasingly threatened ecosystem. As restoration projects are implemented more frequently in degraded floodplains, novel methods are emerging with a focus on restoring critical processes in which vegetation plays a key role. The purpose of this paper is two-fold: 1) to develop expectations for vegetation response,...
Resource Type:: Capstone Project

Atlantic Puffin (Fratercula arctica) Foraging Ecology During Marine Heatwave Conditions

Creator:: Kennerley, William L.
Abstract:: Marine heatwaves (“MHWs”) are discrete periods of anomalously warm ocean conditions that can lead to shifts in the distribution and abundance of marine organisms. Low-trophic level, pelagic forage species are frequently among those affected by MHWs, often resulting in considerable impacts upon their predators. In the North Atlantic Ocean, Atlantic...
Resource Type:: Masters Thesis
Full Text:: Occurrence of Metazoan Taxa…………………………………………………... 92 3.3 Relationship of FOO and RRA with Relative Biomass

Effects of an engineered log jam on flow structure and complexity

Creator:: L'Hommedieu, William J.
Abstract:: The installation of engineered log jams (ELJs) is a common river restoration practice, implemented to modify flow structure and increase hydraulic complexity for the benefit of streambank protection and fish habitat. However, few studies have directly assessed the effects of ELJs on flow structure and complexity. This study presents a...
Resource Type:: Masters Thesis
Full Text:: , 79–89. doi:10.1002/rra.893 Crowder, D. W., & Diplas, P. (2002). Vorticity and circulation : spatial

ScholarsArchive@OSU

Multivariate Vegetation Mapping -- Code and Data

Diet overlap by DNA metabarcoding of mule deer, elk, and cattle in ponderosa pine forest of eastern Oregon

Drivers and Impacts of a Recent Annual Grass Invasion: Ventenata dubia and Fire in the Inland Northwest

Variation of the Trowbridge's shrew (Sorex trowbridgii) diet across forest types in the Oregon Cascades

How to write business plans for forest products companies

The production potential of the Ingland-Jones Trailer Alp yarder in thinning young growth northwest conifers: a case study

Fire effects on vegetation diversity, structure, and successional dynamics in shrub-steppe and mixed conifer environments of the Hells Canyon, Idaho

A Review and Recommendations for Assessing Floodplain Vegetation Recovery Following Stage 0 and Beaver Dam Analog Restorations in the Pacific Northwest

Atlantic Puffin (Fratercula arctica) Foraging Ecology During Marine Heatwave Conditions

Effects of an engineered log jam on flow structure and complexity

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