Index Catalog // ScholarsArchive@OSU

Rockfishes and associated ichthyofauna caught off Monterey, California, summer 1976

Creator:: Sepulveda-Vidal, Jose
Resource Type:: Masters Thesis
Full Text:: AN ABSIRACT OF TH THESIS OF Jose Sepulveda-Vidal for the degree

Escaped farmed salmon and trout in Chile: incidence, impacts, and the need for an ecosystem view

Creator:: Sepúlveda, Maritza, Arismendi, Ivan, Soto, Doris, Jara, Fernando, and Farias, Francisca
Abstract:: The exponential growth of the salmonid farming industry during the last 3 decades has created conditions for massive escapes of these exotic species into natural environments in southern Chile. Here, we review and update information about salmonid escapes from 1993 to 2012 and examine their potential environmental, social, and economic...
Resource Type:: Article
Full Text:: , and the need for an ecosystem view Sepúlveda, M., Arismendi, I., Soto, D., Jara, F., & Farias, F

Inter-decadal changes in the intensity of the Oxygen Minimum Zone off Concepción, Chile (~ 36° S) over the last century

Creator:: Srain, B., Pantoja, S., Sepúlveda, J., Lange, C. B., Muñoz, P., Summons, R. E., McKay, J., and Salamanca, M.
Abstract:: We reconstructed oxygenation changes in the Oxygen Minimum Zone of the upwelling ecosystem off Concepción (36° S), Chile, using inorganic and organic proxies in a sediment core covering the last ca. 110 years of sedimentation in this area. Authigenic enrichments of Mo, U and Cd were observed between ca. 1935–1971...
Resource Type:: Article

Interdecadal changes in intensity of the oxygen minimum zone off Concepción, Chile (~ 36° S), over the last century

Creator:: Srain, B., Pantoja, S., Sepúlveda, J., Lange, C. B., Muñoz, P., Summons, R. E., McKay, J., and Salamanca, M.
Abstract:: We reconstructed oxygenation changes in the upwelling ecosystem off Concepción (36° S), Chile, using inorganic and organic proxies in a sediment core covering the last ca. 110 years of sedimentation in this area. Authigenic enrichments of Mo, U and Cd were observed between ca. 1935 and 1971 CE, implying a...
Resource Type:: Article

Diving into Diversity: Fish Populations and Climate Resilience in an Endorheic Basin

Creator:: Dew, Aleah
Abstract:: The Goose Lake Basin, situated on the border of Oregon and California, USA, faces significant challenges from drought, wildfire, and other environmental stressors. This region hosts numerous endemic fish species such as the Goose Lake redband trout (Oncorhynchus mykiss newberri), Goose Lake lamprey (Entosphenus sp.), Goose Lake tui chub (Siphateles...
Resource Type:: Masters Thesis
Full Text:: Abstract approved: ______________________________________________________ Melanie J. Davis

A study of corynebacterial kidney disease of salmonid fishes

Creator:: Rowse-Eagle, Debra H.
Abstract:: This study was undertaken to compile a comprehensive review of the literature and to gain a better understanding of the host-parasite relationship in corynebacterial kidney disease of salmonid fishes. An indirect fluorescent antibody technique was developed which allowed differentiation of intra- and extracellular bacteria. This technique was used in combination...
Resource Type:: Masters Thesis
Full Text:: this work possible, especially Dr. J. L. Fryer, for his patience and guidance Drs. A. Owczarzak and A

A Multi-Tiered Approach Using Daphnia magna to Assess Chlorpyrifos Risk to Aquatic Receptors

Creator:: Maggio, Stephanie A.
Abstract:: Chlorpyrifos (CPF) is a widely used broad-spectrum organophosphate insecticide. Following exposures, CPF and its more toxic oxon metabolite (CPFO) elicit neurotoxic effects by inhibiting the activity of the acetylcholinesterase enzyme (AChE), resulting in altered fitness and death at high doses. Following exposure, organisms bioactivate CPF to CPFO through the Cytochrome...
Resource Type:: Dissertation
Full Text:: Jeffrey J. Jenkins Chlorpyrifos (CPF) is a widely used broad-spectrum organophosphate insecticide

Using environmental DNA to detect the invasive New Zealand mud snail (Potamopyrgus antipodarum) in freshwater

Creator:: Ponce, Jake J.
Abstract:: Environmental DNA (eDNA) detection of aquatic invasive species is at the forefront of aquatic conservation efforts because of decreased costs, increased response times, and increase of sensitivity for intercepting invasions with low density populations. Developments in eDNA technologies have improved detection probabilities for rare, indicator, and invasive species over the...
Resource Type:: Capstone Project
Full Text:: . Goldberg, C. S., A. Sepulveda, A. Ray, J. Baumgardt, and L. P. Waits, L. P. 2013. Environmental DNA as a

Nekton remains, diatoms, and holocene upwelling off Peru

Creator:: DeVries, Thomas J.
Abstract:: Partly laminated sediments on the upper continental slope (200-600 m) off central Peru contain a diverse assemblage of fish debris, diatoms, and the remains of a variety of other nektonic, planktic, and benthic organisms. Approximately 97 percent of the fish scales recovered from the best preserved cores come from the...
Resource Type:: Masters Thesis
Full Text:: acknowledge the help of A. Soutar, H.- J. Schrader, G. Schuette, J. Sepulveda, W. Wakefield, K. Howe, C

Pacific marten occupancy and detection probability in relation to infrastructure and environmental factors in the southern Cascade Mountains

Creator:: Hill, Deborah J.
Abstract:: Humans benefit from being in nature and recreating, however outdoor recreation can negatively impact wildlife, including species of conservation concern such as the Pacific marten (Martes caurina). Densities of martens decline following intensive forest management activities, but impacts from recreation are relatively unstudied. My goal was to evaluate marten occupancy...
Resource Type:: Capstone Project
Full Text:: Deborah J. Hill CAPSTONE PROJECT submitted to Oregon State

ScholarsArchive@OSU

Rockfishes and associated ichthyofauna caught off Monterey, California, summer 1976

Escaped farmed salmon and trout in Chile: incidence, impacts, and the need for an ecosystem view

Inter-decadal changes in the intensity of the Oxygen Minimum Zone off Concepción, Chile (~ 36° S) over the last century

Interdecadal changes in intensity of the oxygen minimum zone off Concepción, Chile (~ 36° S), over the last century

Diving into Diversity: Fish Populations and Climate Resilience in an Endorheic Basin

A study of corynebacterial kidney disease of salmonid fishes

A Multi-Tiered Approach Using Daphnia magna to Assess Chlorpyrifos Risk to Aquatic Receptors

Using environmental DNA to detect the invasive New Zealand mud snail (Potamopyrgus antipodarum) in freshwater

Nekton remains, diatoms, and holocene upwelling off Peru

Pacific marten occupancy and detection probability in relation to infrastructure and environmental factors in the southern Cascade Mountains

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