Index Catalog // ScholarsArchive@OSU

Habitat quality and biotic integrity in mountain streams of East Maui, Hawaii

Creator:: Carter, H. Jamieson
Abstract:: Hawaiian streams are valued for environmental, cultural, and aesthetic qualities. Windward streams in East Maui, Hawaii are diverted to irrigate crops in central portions of the island. Diversions typically remove 100% of the base flow and leave downstream reaches dry most of the year. Ground water seeps and springs contribute...
Resource Type:: Capstone Project
Full Text:: Jones, and my other committee members, Dr. Stephen Lancaster and Dr. Stephen Schoenholtz, all ingrained

Effects of Forest Harvest, Floods, and Wildfire on Bedload Export from Headwater Catchments in the H.J. Andrews Experimental Forest, 1957 – 2022

Creator:: Wright, Charles M.
Abstract:: This study examined how annual bedload export volume and bedload characteristics were related to disturbances including logging, floods, debris slides, and wildfires over 48 to 65-year periods in small, steep catchments in conifer forests of the western Cascade Range, Oregon. Bedload – the material rolling, sliding, or saltating along the...
Resource Type:: Masters Thesis
Full Text:: . Abstract approved: ______________________________________________________ Julia Jones This study

Microearthquake studies of the Blanco fracture zone and Gorda Ridge using Sonobuoy arrays

Creator:: Jones, Paul Roy III
Abstract:: University deployed two arrays of three sonobuoys over the Blanco fracture zone and two arrays of four sonobuoys over the Gorda ridge to detect and locate microearthquakes. Microearthquake activity predicted by plate tectonic theory for the Blanco fracture zone and Gorda ridge was observed by these arrays to originate from...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF PAUL ROY JONES III for the degree

Opening Pandora’s Box: Machine learning applications for chemical forensics and non-target chemical analyses

Creator:: Davila-Santiago, Emmanuel
Abstract:: Water bodies act as chemical data loggers that contain tens of thousands of molecules that represent the sum of the biological, chemical, and physical processes occurring within a watershed. We hypothesize that unique chemical signatures present within a water sample can be informative of upstream processes. By extracting non-polar organic...
Resource Type:: Masters Thesis
Full Text:: approved: ______________________________________________________ Gerrad D. Jones Water bodies are

Road networks, timber harvest, and the spread of Phytophthora root rot infestations of Port-Orford-cedar in southwest Oregon

Creator:: Clark, William C.
Abstract:: Phytophthora lateralis is the causal agent of cedar root rot, a fatal forest pathogen whose principal host is Chamaecyparis lawsoniana (Port-Orford-cedar), a predominantly riparian-restricted endemic tree species of ecological, economical, and cultural importance to coastal Oregon and California. Local scale distribution of P. lateralis is thought to be associated with...
Resource Type:: Masters Thesis

The effects of stand thinning on soil erosion rates at Jim's Creek in the Willamette National Forest, Oregon

Creator:: McFadden, Andrew K.
Abstract:: Surface sediment transport is an important geomorphic process which can be significantly altered by management activities in forested ecosystems. Disturbance of the soil surface may result in increased sediment delivery to fish bearing streams and degradation of soil structure. Selective thinning and low impact yarding techniques were utilized in an...
Resource Type:: Capstone Project
Full Text:: PROGRAM December 2010 Directed by Dr. Julia Jones ACKNOWLEDGEMENTS I

Microbial Community Composition as a Driver of Chemical Composition Change in Streams and Wastewater

Creator:: Mahadwar, Gouri
Abstract:: Microbial communities in aquatic systems are dominant drivers of chemical transformation, including contaminants of emerging concern (CECs). This study quantified shifts in microbial communities and their relationship to shifts in chemical composition in surface waters in the Willamette Valley, Oregon. In addition to bulk chemical composition shifts, the relationship between...
Resource Type:: Masters Thesis
Full Text:: Abstract approved: ______________________________________________________ Gerrad Jones

Do vigorous young forests reduce streamflow? Results from up to 54 years of streamflow records in eight paired-watershed experiments in the H. J. Andrews and South Umpqua Experimental Forests

Creator:: Perry, Timothy D.
Abstract:: This study quantified the magnitude and timing of summer streamflow deficits in paired-watershed experiments in the Cascade Range of Oregon where mature and old-growth conifer forests were subjected to clearcutting, patch cutting, and overstory thinning treatments in the 1960s and 1970s. Hydrologic effects of clearcutting, small-patch cutting, and overstory thinning...
Resource Type:: Masters Thesis
Full Text:: Experimental Forests. Abstract approved: Julia A. Jones This study quantified

Characterization of novel marine oligotrophic bacteria isolated from the Pacific Ocean : description of Marinivirgula fluito gen. nov., sp. nov., Marinivirgula obesa gen. nov., sp. nov. and Litincola parvulus gen. nov., sp. nov.

Creator:: Shin, Eun Jung
Abstract:: A new high-throughput culturing (HTC) method using a low nutrient heterotrophic medium (LNHM) has led to the isolation of many novel strains of oligotrophic bacteria from marine ecosystems. Four strains belonging to a single dade, HTCC2151, HTCC218OT, HTCC2178T and HTCC2188T, were isolated from the coast of Oregon by the HTC...
Resource Type:: Masters Thesis
Full Text:: would like to express my gratitude to my major professor, Dr. Stephen Giovannoni, for the opportunity

Sediment reservoir dynamics on steepland valley floors : influence of network structure and effects of inherited ages

Creator:: Frueh, Walter Terry
Abstract:: Sediment deposit ages inferred from radiocarbon dating of stream bank material were used to estimate residence times of valley-floor deposits in headwater valleys of the Oregon Coast Range, USA. Inherited ages of radiocarbon-dated material, i.e., time between carbon fixation in wood and its incorporation in a sediment deposit, can result...
Resource Type:: Masters Thesis
Full Text:: : _____________________________________________________________________ Stephen T. Lancaster Sediment deposit ages inferred from radiocarbon dating of stream bank

ScholarsArchive@OSU

Habitat quality and biotic integrity in mountain streams of East Maui, Hawaii

Effects of Forest Harvest, Floods, and Wildfire on Bedload Export from Headwater Catchments in the H.J. Andrews Experimental Forest, 1957 – 2022

Microearthquake studies of the Blanco fracture zone and Gorda Ridge using Sonobuoy arrays

Opening Pandora’s Box: Machine learning applications for chemical forensics and non-target chemical analyses

Road networks, timber harvest, and the spread of Phytophthora root rot infestations of Port-Orford-cedar in southwest Oregon

The effects of stand thinning on soil erosion rates at Jim's Creek in the Willamette National Forest, Oregon

Microbial Community Composition as a Driver of Chemical Composition Change in Streams and Wastewater

Do vigorous young forests reduce streamflow? Results from up to 54 years of streamflow records in eight paired-watershed experiments in the H. J. Andrews and South Umpqua Experimental Forests

Characterization of novel marine oligotrophic bacteria isolated from the Pacific Ocean : description of Marinivirgula fluito gen. nov., sp. nov., Marinivirgula obesa gen. nov., sp. nov. and Litincola parvulus gen. nov., sp. nov.

Sediment reservoir dynamics on steepland valley floors : influence of network structure and effects of inherited ages

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