Index Catalog // ScholarsArchive@OSU

Response of Stream Macroinvertebrate Community to Canopy-opening Manipulations

Creator:: Mackaness, Cedar
Abstract:: Stream light availability is an important factor influencing aquatic food webs. In forested headwaters, stream algal production is often highly light-limited, so an increase in light enhances benthic algal growth, which in turn increases food availability for primary consumers in the stream. In forested headwater streams, light availability is almost...
Resource Type:: Honors College Thesis
Full Text:: , Mentor, College of Forestry Dave Lytle, Committee Member, Integrative Biology Dave Roon, Committee

Effects of esfenvalerate on native macroinvertebrates representative of Pacific Northwest streams

Creator:: Johnson, Katherine R.
Abstract:: Aquatic insects are essential components of healthy stream ecosystems, contributing to nutrient cycling, trophic dynamics and other ecological functions. Aquatic insect species, particularly those in the orders Ephemeroptera, Plecoptera and Trichoptera (EPT taxa) are however, extremely sensitive to insecticide contamination. Given that urban and agricultural use of synthetic pyrethroid insecticides...
Resource Type:: Dissertation
Full Text:: valuable. Grateful thanks go to committee members Anne Fairbrother and Dave Lytle for their feedback and

Distribution of Ceratomyxa shasta (Myxozoa) and habitat preference of the polychaete host, Manayunkia speciosa in the Klamath River

Creator:: Stocking, Richard W.
Abstract:: Ceratomyxa shasta is a myxozoan parasite of salmonids and requires the freshwater polychaete, Manayunkia speciosa to complete its life cycle. The parasite’s distribution is currently limited to the Pacific Northwest region of North America and has been reported to cause substantial losses of both wild and hatchery salmonids. The spatial...
Resource Type:: Masters Thesis

Juvenile Salmonid Rearing Potential in Seasonally Disconnected Floodplain Habitats in the Skagit River, WA

Creator:: Hicks, Madeline C.
Abstract:: Our understanding of seasonally disconnected floodplains and how they function to support rearing salmonids in the Pacific Northwest is limited. Past studies have found that these dynamic habitats may provide high-risk, high-reward trade-offs for rearing fish. High prey densities and optimal temperatures allow for accelerated growth, but low water levels...
Resource Type:: Masters Thesis
Full Text:: you to my partner, David Mattioli, for cheering me on every step of the way and supporting me

The Impacts of Multiple Stressors on Aquatic Invertebrate Communities in the Umatilla River

Creator:: Clark, Hannah
Abstract:: Rivers impacted by human activities often have multiple stressors present. The effects of multiple stressors on biological communities can often be difficult to predict, due to the potential for complex interactions between stressors and communities. This thesis explores the impacts of two stressors often associated with agricultural land use, increased...
Resource Type:: Masters Thesis
Full Text:: student. I also thank my committee members Dr. Sandy DeBano, Dr. Tiffany Garcia, and Dr. David Lytle

Population genetics of ranid frogs : investigating effective population size and gene flow

Creator:: Phillipsen, Ivan C.
Abstract:: This dissertation focuses on the evolutionary forces of genetic drift and gene flow in frog populations. The balance of these two forces and the force of mutation largely determine the amount of neutral genetic variation within populations as well as the degree of genetic similarity among populations. The stochastic evolutionary...
Resource Type:: Dissertation
Full Text:: Arnold, Tiff Garcia, Julia Jones, and Dave Lytle. I appreciate all the helpful suggestions they gave me

Age-specific and lifetime reproductive success of known age Northern Spotted Owls on four study areas in Oregon and Washington

Creator:: Loschl, Peter J.
Abstract:: Northern Spotted Owls (Strix occidentalis caurina) are a long-lived forest owl and range-wide declines in their numbers have resulted in the species being listed as threatened under the endangered species act. While many studies have been focused on population trends and reproductive performance of Spotted Owls from different age-classes, none...
Resource Type:: Masters Thesis
Full Text:: guidance of my graduate research committee members Gail Olson and David Lytle. Tom Snetsinger and

Emergent Properties of Animal Social Networks: Five Stories in Five Systems

Creator:: Devan-Song, E. Anne
Abstract:: Animals aggregate and interact in nonuniform and nonrandom patterns, which lead to group level characteristics that have important evolutionary and ecological consequences. Network analysis provides a useful conceptual framework for linking animal interactions at all scales from dyads to communities, to populations and ecosystems. Despite exciting theoretical and applied advances...
Resource Type:: Dissertation
Full Text:: . I also thank my current committee members Jan Medlock, Dave Lytle, and Bree Beechler, and former

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:: . Dana Warren, Dr. David Lytle and Dr. Marta Torres for their help in this process. Thank you also to

The Influence of Prey Predictability on the Foraging Behavior and Movement of Intertidal Predators

Creator:: Hennessey, Shannon M.
Abstract:: Fluctuations and spatial heterogeneity of habitat and resources is thought to underlie niche variation in animal populations, with intraspecific differences serving to produce or maintain population-, community-, or ecosystem-level patterns. Individual diet variation, defined as individual variation in food resource use within a population that is consistent over time, is...
Resource Type:: Dissertation
Full Text:: my committee members Bruce Menge, Dave Lytle, Jonny Armstrong, and Ivan Arismendi. I greatly

ScholarsArchive@OSU

Response of Stream Macroinvertebrate Community to Canopy-opening Manipulations

Effects of esfenvalerate on native macroinvertebrates representative of Pacific Northwest streams

Distribution of Ceratomyxa shasta (Myxozoa) and habitat preference of the polychaete host, Manayunkia speciosa in the Klamath River

Juvenile Salmonid Rearing Potential in Seasonally Disconnected Floodplain Habitats in the Skagit River, WA

The Impacts of Multiple Stressors on Aquatic Invertebrate Communities in the Umatilla River

Population genetics of ranid frogs : investigating effective population size and gene flow

Age-specific and lifetime reproductive success of known age Northern Spotted Owls on four study areas in Oregon and Washington

Emergent Properties of Animal Social Networks: Five Stories in Five Systems

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

The Influence of Prey Predictability on the Foraging Behavior and Movement of Intertidal Predators

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