Index Catalog // ScholarsArchive@OSU

Evaluating tools used to estimate and manage browse available to wintering moose on the Copper River Delta, Alaska

Creator:: Smythe, Sharon E.
Abstract:: Ungulates comprise some of the most well researched and intensely managed wildlife populations on earth. As such, they are recognized as ideal study subjects for developing and modifying management tools or theories (Danell et al. 1994, Shipley 2010). An introduced moose (Alces alces gigas) population on the Copper River Delta...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Sharon E. Smythe for the degree of Master of Science in Wildlife

Functional relationships among vegetation, nocturnal insects, and bats in riparian areas of the Oregon Coast Range

Creator:: Ober, Holly K.
Abstract:: Vegetation provides food for many insects, and many insects serve as food for bats. We investigated the linkages among these three trophic levels in riparian areas throughout the Oregon Coast Range by examining the influence of vegetation cover, composition, and structure on the activity of nocturnal insects and bats, the...
Resource Type:: Dissertation
Full Text:: ................................................................................................... 210 E. Macro-moths captured in conifer- and deciduous-dominated stream reaches..... 212 F

Movement Ecology and Population Dynamics of the Endangered Hawaiian Duck (Anas wyvilliana)

Creator:: Malachowski, Christopher P.
Abstract:: Fundamental objectives in the field of conservation biology involve understanding the processes that influence small and declining populations and applying that knowledge to develop appropriate monitoring strategies and targeted management and conservation actions. Critical first steps in determining the relative role of factors that drive population declines involves estimation of...
Resource Type:: Dissertation
Full Text:: thank my graduate council representative, Dr. David Hibbs, for his service and helpful comments. I

Butterfly and flower community composition among prairie-oak ecosystem habitats in the Willamette Valley, Oregon

Creator:: Powers, Breanna F.
Abstract:: Prairie-oak ecosystems in the Willamette Valley, Oregon have experienced habitat loss and degradation; most of these ecosystems are fragmented into smaller patches. Prairie-oak butterfly species, in the Willamette Valley, have decreased dramatically due to loss or degradation of habitat. More research is needed on sustaining the populations of butterflies in...
Resource Type:: Masters Thesis
Full Text:: , Oregon. Noss, R. F., L. E. T. III, and M. J. Scott. 1995. Endangered Ecosystems of the United States

Using DNA Metabarcoding to Study Interactions Between Native Bees and Plants: Technical Developments and Applications

Creator:: Arstingstall, Katherine A.
Abstract:: Pollination is an essential ecosystem service that sustains functioning ecosystems and aids in food production. In response to recent, widespread declines of managed and native bee populations, many land managers have shown interest in developing conservation and restoration plans for enhancing native bee habitat. However, there is a lack of...
Resource Type:: Masters Thesis
Full Text:: Concentrations Katherine A. Arstingstall, Sandra J. DeBano, Xiaoping Li, David E. Wooster, Mary M. Rowland

The use of burned forest by breeding birds following the Biscuit Fire in southwest Oregon

Creator:: Donaghy Cannon, Michelle M.
Abstract:: Fire severity is hypothesized as an important driver of bird responses to wildfire. For those species that typically respond negatively to increasing severity, Accessibility of high-severity burned forest may be dependent on the proximity of unburned or low-severity burned forest to meet all of the needs of breeding bird species...
Resource Type:: Dissertation
Full Text:: way. My committee members, Joan Hagar, David Hibbs and Doug Robinson offered different and much

A model for understanding the influence of selective and nonselective harvest on fish populations

Creator:: Hirai, Takayuki
Abstract:: To understand the influence of selective harvesting on the adaptive capacity of fish populations in changing environments, a computer simulation model was developed. In the model, hypothetical populations were composed of five different life histories, which were genetically determined. Each life history type had its own rate of survival and...
Resource Type:: Masters Thesis
Full Text:: for Privacy Dean of Grda e bcnooll Ot Date thesis is presented 8 September 1987 Typed by Chie Hirai

Linkages among land use, riparian zones, and uptake and transformation of nitrate in stream ecosystems

Creator:: Sobota, Daniel J.
Abstract:: Land use alters the physical and biological structure of stream ecosystems and potentially alters their capacity to process nitrogen (N), an essential nutrient that has nearly doubled in abundance on the biosphere during the past century from human activities. In this dissertation, I quantified uptake and transformation of nitrate (NO₃⁻)...
Resource Type:: Dissertation
Full Text:: ……………………..……………145 D. NH4 + and SPON Calculations for Chapter 2………………………….……146 E. Study Design for Chapter

Beyond the Benthos: The effects of stream restoration on habitat complexity and aquatic and riparian macroinvertebrate assemblages

Creator:: Lotz, Kelsey L.
Abstract:: Aquatic and riparian systems in the western United States have been highly modified by anthropogenic impacts since Euro-American settlement. Ecological restoration is a practice that has been widely conducted around the world to mitigate the degradation of these systems. The majority of stream restoration efforts have focused on improving in-stream...
Resource Type:: Masters Thesis
Full Text:: Assemblages. Abstract approved: _____________________________________________________ David E. Wooster

Patterns of interactive segregation in three species of sculpins (Cottus) in western Oregon

Creator:: Finger, Terry Richard
Abstract:: Species interactions and their effect on the use of habitat by benthic fishes were examined in a guild composed of Cottus perplexus, C. rhotheus, and C. beldingi in the Marys River above Philomath, Oregon, and in a constant environment provided by an artificial stream. In the Marys River system, the...
Resource Type:: Dissertation
Full Text:: major professor and committee members, James D. Hall, Carl E. Bond, W. Scott Overton, and C. David

ScholarsArchive@OSU

Evaluating tools used to estimate and manage browse available to wintering moose on the Copper River Delta, Alaska

Functional relationships among vegetation, nocturnal insects, and bats in riparian areas of the Oregon Coast Range

Movement Ecology and Population Dynamics of the Endangered Hawaiian Duck (Anas wyvilliana)

Butterfly and flower community composition among prairie-oak ecosystem habitats in the Willamette Valley, Oregon

Using DNA Metabarcoding to Study Interactions Between Native Bees and Plants: Technical Developments and Applications

The use of burned forest by breeding birds following the Biscuit Fire in southwest Oregon

A model for understanding the influence of selective and nonselective harvest on fish populations

Linkages among land use, riparian zones, and uptake and transformation of nitrate in stream ecosystems

Beyond the Benthos: The effects of stream restoration on habitat complexity and aquatic and riparian macroinvertebrate assemblages

Patterns of interactive segregation in three species of sculpins (Cottus) in western Oregon

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