Index Catalog // ScholarsArchive@OSU

Description and prediction of broad-scale spatial variability in expression of anadromy in female Oncorhynchus mykiss in the John Day River, Oregon, USA

Creator:: Mills, Justin S.
Abstract:: Partial migration is a common migratory behavior where some individuals in a population migrate and others do not. Patterns of partial migration can vary dramatically, especially for species that inhabit a wide range of environments. I described and predicted spatial variation in marine migration (anadromy) of female Oncorhynchus mykiss (steelhead...
Resource Type:: Masters Thesis
Full Text:: -migratory or anadromous migrations in Oncorhynchus mykiss within the John Day River, Oregon. Individuals

Shallow aquifer characteristics adjacent to the upper Middle Fork John Day River, eastern Oregon

Creator:: Hopson, Richard G.
Abstract:: Subsurface inputs into lotic systems are a primary mechanism for cooling streams with high ambient water temperatures. Objectives of this study include: 1) to determine the effectiveness of Forward Looking Infrared (FLIR) thermal imagery to detect shallow aquifers, 2) to characterize certain physical, spatial, and temporal characteristics of the fluvial,...
Resource Type:: Masters Thesis

The Influence of Riparian Habitat and Microhabitat Selection on Fish Assemblaqe Structure in the Upper John Day Basin, Oreqon

Creator:: Leitzinger, Eric J.
Abstract:: Fish assemblage structure was determined along a longitudinal gradient for three drainages in the upper John Day basin: Middle Fork, South Fork, and upper Mainstem proper. One or two tributaries in each drainage were included. Where possible, sites were paired: those with good versus those with poor riparian habitat. Detrended...
Resource Type:: Masters Thesis

Evaporative heat loss of the upper Middle Fork of the John Day River, northeastern Oregon

Creator:: Benner, David A.
Abstract:: Evaporation was studied along the Middle Fork of the John Day River in northeastern Oregon. Evaporation pans and various meteorological sensors recorded data at nine sites during the summer of 1998; measurements were made at each site over a 3-4 day period. A Dalton-type evaporation model was produced using water...
Resource Type:: Masters Thesis

The influence of sex, migration distance, and latitude on expression of anadromy in Oncorhynchus mykiss

Creator:: Ohms, Haley
Abstract:: The evolution and maintenance of multiple phenotypes within populations is an interesting evolutionary and ecological question, and is becoming increasingly important for the restoration and conservation of partially migratory species. In particular, why individuals adopt a particular phenotype has been the focus of numerous research efforts. In the partially migratory...
Resource Type:: Masters Thesis
Full Text:: resident rainbow trout and juvenile steelhead from the South Fork John Day River, eastern Oregon, from

Drop it like it’s Hot : Combining DTS and Temperature Modeling to Evaluate Stream Restoration on the Middle Fork of the John Day River

Creator:: Hall, Austin
Abstract:: Temperature is a key factor for salmonid health and is an important restoration metric on the Middle Fork of the John Day River in northeast Oregon. In the past century, dredge mining, deforestation, and overgrazing have degraded stream habitat and resulted in greater daytime stream temperatures in the region. Recent...
Resource Type:: Masters Thesis
Full Text:: restoration metric on the Middle Fork of the John Day River in northeast Oregon. In the past century, dredge

Multiscale assessment of thermal patterns and the distribution of chinook salmon in the John Day River Basin, Oregon

Creator:: Torgersen, Christian E.
Abstract:: This study examined the distribution and behavior of adult spring chinook salmon (Oncorhynchus tshawytscha) related to patterns of stream temperature and physical habitat at channel unit, reach, and basin-wide spatial scales in both a wilderness stream and a disturbed stream in the John Day River basin in northeastern Oregon. Thermal...
Resource Type:: Masters Thesis
Full Text:: of Chinook Salmon in the John Day River Basin, Oregon AN ABSTRACT OF THE THESIS OF Christian E

The optimal allocation of watershed conservation funding : a case study of the John Day River Basin, Oregon

Creator:: Skelton, Katharine
Abstract:: This study determines the optimal allocation of watershed conservation funds in the John Day River Basin, Oregon. Fund managers can use a variety of targeting schemes to allocate their limited resources. Depending on which targeting criteria is used, they may or may not be achieving the maximum environmental benefits per...
Resource Type:: Masters Thesis
Full Text:: John Day River Basin, Oregon. Fund managers can use a variety of targeting schemes to allocate their

Seasonal life history of Oncorhynchus mykiss in the South Fork John Day River Basin, Oregon

Creator:: Tattam, Ian A.
Abstract:: Understanding seasonal changes in growth, survival, and movement rates is crucial to salmonid management. These life history characteristics provide a context for evaluation of management actions. We evaluated the life history of individually marked Oncorhynchus mykiss gairdneri in the South Fork John Day River basin in Northeastern Oregon. This thesis...
Resource Type:: Masters Thesis
Full Text:: History of Oncorhynchus mykiss in the South Fork John Day River Basin, Oregon Abstract approved

Beaver ecology in Bridge Creek, a tributary to the John Day River

Creator:: Maenhout, Julie L. (Harper)
Abstract:: The American beaver (Castor canadensis) was nearly extirpated by the late 1800's due to the fur trade. Due to reintroduction efforts, it now occupies much of its former range. Beavers are a keystone species and ecosystem engineers, greatly influencing riparian and instream habitats through selective harvesting of plant materials and...
Resource Type:: Masters Thesis
Full Text:: THE JOHN DAY RIVER Julie L. Maenhout, Department of Forest Ecosystems and Society, Oregon State

ScholarsArchive@OSU

Description and prediction of broad-scale spatial variability in expression of anadromy in female Oncorhynchus mykiss in the John Day River, Oregon, USA

Shallow aquifer characteristics adjacent to the upper Middle Fork John Day River, eastern Oregon

The Influence of Riparian Habitat and Microhabitat Selection on Fish Assemblaqe Structure in the Upper John Day Basin, Oreqon

Evaporative heat loss of the upper Middle Fork of the John Day River, northeastern Oregon

The influence of sex, migration distance, and latitude on expression of anadromy in Oncorhynchus mykiss

Drop it like it’s Hot : Combining DTS and Temperature Modeling to Evaluate Stream Restoration on the Middle Fork of the John Day River

Multiscale assessment of thermal patterns and the distribution of chinook salmon in the John Day River Basin, Oregon

The optimal allocation of watershed conservation funding : a case study of the John Day River Basin, Oregon

Seasonal life history of Oncorhynchus mykiss in the South Fork John Day River Basin, Oregon

Beaver ecology in Bridge Creek, a tributary to the John Day River

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