Index Catalog // ScholarsArchive@OSU

A comparison of nest site selection and reproductive effort by reticulate sculpin (Cottus perplexus) in two streams of different geologies in the central Coast Range of Oregon

Creator:: Bateman, Douglas S.
Abstract:: Nest sites of reticulate sculpin (Cottus perplexus) were located in two stream reaches, one from a basalt basin and one from a sandstone basin. Stream reaches were similar in gradient, basin area, elevation, climate, and riparian vegetation but differed in biologic community structure and substrate characteristics. An electivity index was...
Resource Type:: Masters Thesis
Full Text:: Range of Oregon Douglas S. Bateman and Hiram W. Li 4 Abstract Nest sites of reticulate

Feeding behavior and diet of native bull trout Salvelinus confluentus and introduced brook trout S. fontinalis in two Eastern Oregon streams

Creator:: Gunckel, Stephanie L.
Abstract:: One of the greatest threats to native bull trout Salvelinus confluentus populations is the presence of non-native brook trout S. fontinalis. This study, conducted in two second-order Eastern Oregon streams, investigates the effect of brook trout on the feeding behavior arid diet of bull trout. Feeding behavior, microhabitat use, and...
Resource Type:: Masters Thesis
Full Text:: and Diet of Native Bull Trout Sahthnus co,fluentus and Introduced Brook Trout S. fontinalis in Two

Influences of environmental acidification on salmonid reproduction

Creator:: Weiner, Gary S.
Abstract:: Reproduction of salmonid fishes in acidic water was studied using the rainbow trout (Salmo gairdneri). Adult trout were exposed to various levels of hydrogen ion (pH levels 4.5, 5.0, 5.5, and control [6.5 to 7.1]) during the final 6 weeks of reproductive maturation. Reduced survival rates of the progeny of...
Resource Type:: Masters Thesis
Full Text:: reproduction AN ABSTRACT OF THE THESIS OF Gary S. Weiner for the degree of Master of Science in Fisheries

Fish and invertebrate distribution at multiple scales in Thomas Creek, Oregon : a transition from conifer uplands to agricultural lowlands

Creator:: Langshaw, Russell B.
Abstract:: Longitudinal patterns of fish and benthic invertebrate distribution and habitat use were similar in Thomas Creek, Oregon but clarity of these patterns differed. I studied fish and aquatic invertebrates simultaneously, at multiple scales, and used multivariate statistical techniques to compare responses to the same environmental conditions. Both types of organisms...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Russell B. Langshaw for the degree

Sea urchin-kelp forest communities in marine reserves and areas of exploitation : community interactions, populations, and metapopulation analyses

Creator:: Moctezuma, Gabriela Montaño
Abstract:: Marine ecosystems can be exposed to natural and anthropogenic disturbances that can lead to ecological failures. Marine reserves have been lately suggested to protect marine populations and communities that have been affected by habitat destruction and harvest. This research evaluates the potential role of two marine reserves established in Oregon...
Resource Type:: Dissertation
Full Text:: 24 b) I19 14 C) C4 S __ 1996 1997 1998 Years Figure 2.4. Comparison of adult and juvenile red

How the animals found their places : pattern detection, experimentation, and epistemology in a high desert stream fish assemblage

Creator:: White, Seth Michael
Abstract:: I examined the relative roles of biotic and abiotic factors in structuring redband trout Oncorhynchus mykiss distributions in the South Fork John Day. I first examined the relationship between the biological traits of the fish assemblage and riparian-geomorphic features in context of prevailing theories of stream ecology stemming from the...
Resource Type:: Dissertation
Full Text:: Beach, Oregon: MjM Software Design. McGill, B. J., R. S. Etienne, J. S. Gray, et al. 2007. Species

The relative effects of Ceratomyxa shasta on crosses of resistant and susceptible stocks of summer steelhead

Creator:: Wade, Mark
Abstract:: Crosses were made between a stock of summer steelhead (Salmo gairdneri) known to be resistant to infection by Ceratomyxa shasta and stocks of summer steelhead known to be susceptible. Ceratomyxosis, the disease caused by C. shasta was initiated by exposure to Willamette River water. I found that the crosses were...
Resource Type:: Masters Thesis
Full Text:: ACKNOWLEDGEMENT I would like to thank Dr. Hiram Li who was patient with me for so long, and Drs. John Fryer and

Evolution and risk in conservation of Pacific salmon

Creator:: Currens, Kenneth P.
Abstract:: Identifying appropriate units for conservation requires knowledge of evolutionary patterns and risks of managing at different geographical and genetic scales. I examined genetic diversity at different geographical scales among 11,400 rainbow trout (Oncorhynchus mykiss) from 243 locations in 13 major river basins throughout much of their range and among coho...
Resource Type:: Dissertation
Full Text:: in Conservation of Pacific Salmon. Abstract approved: Carl B. Schreck Hiram W. Li Identifying

Patterns of genetic inheritance and variation through ontogeny for hatchery and wild stocks of Chinook salmon

Creator:: Hulett, Patrick L.
Abstract:: Although differences between selective pressures in hatcheries and streams have been theorized to cause genetic divergence between hatchery and wild salmonids, evidence of this is lacking. This study was initiated to document the presence or absence of genetic change in hatchery and wild stocks by characterizing genetic traits in fish...
Resource Type:: Masters Thesis
Full Text:: Salmon Abstract approved: Redacted for Privacy Carl B. Schreck Redacted for Privacy Hiram W. Ll

Genetic differentiation of resident and anadromous rainbow trout (Salmo gairdneri) in the Deschutes River basin, Oregon

Creator:: Currens, Kenneth P.
Resource Type:: Masters Thesis
Full Text:: approved: Carl B. Schreck Hiram W. Li Wild populations of rainbow trout (Salmo gairdneri) isolated above

ScholarsArchive@OSU

A comparison of nest site selection and reproductive effort by reticulate sculpin (Cottus perplexus) in two streams of different geologies in the central Coast Range of Oregon

Feeding behavior and diet of native bull trout Salvelinus confluentus and introduced brook trout S. fontinalis in two Eastern Oregon streams

Influences of environmental acidification on salmonid reproduction

Fish and invertebrate distribution at multiple scales in Thomas Creek, Oregon : a transition from conifer uplands to agricultural lowlands

Sea urchin-kelp forest communities in marine reserves and areas of exploitation : community interactions, populations, and metapopulation analyses

How the animals found their places : pattern detection, experimentation, and epistemology in a high desert stream fish assemblage

The relative effects of Ceratomyxa shasta on crosses of resistant and susceptible stocks of summer steelhead

Evolution and risk in conservation of Pacific salmon

Patterns of genetic inheritance and variation through ontogeny for hatchery and wild stocks of Chinook salmon

Genetic differentiation of resident and anadromous rainbow trout (Salmo gairdneri) in the Deschutes River basin, Oregon

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