Index Catalog // ScholarsArchive@OSU

Factors affecting slime accumulation in fiberboard mill process water

Creator:: Minelli, Michael Philip
Abstract:: The objectives for this study were to determine the causes of slime formation in activated sludge treatment and to recommend possible control measures. The primary problem was a seasonal filamentous bulking which was caused by the mold, Geotrichum candidum. During the winter, mycelial fibers appeared and formed a free floating...
Resource Type:: Masters Thesis
Full Text:: Privacy Abstract approved: / A.4. Anderson The objectives for this study were to determine the causes of

Sulfide metabolism in Lucina floridana, a sulfur symbiont-containing marine clam

Creator:: Larabee, Jeannine Kay
Abstract:: Lucina floridana is an intertidal clam that contains intracellular, sulfur-oxidizing symbiotic bacteria in its gills. These bacteria are chemolithoautotrophic, using the energy from the oxidation of reduced sulfur compounds to power carbon fixation. Although sulfide is an energy-rich compound, it is also toxic to aerobic metabolism and autooxidizes in the...
Resource Type:: Masters Thesis
Full Text:: , Amy Anderson, for the support and encouragement she has given me throughout my graduate career. She

Drift, wood, and grazing cattle : macroinvertebrates in managed streams

Creator:: Reed, T. L.
Abstract:: The importance of active-entry drift at a community-scale was evaluated by testing whether the placement of wood in streams affected the abundance of Baetis spp. mayflies in drift. Baetis were chosen because they use drift as a behavioral strategy and are important in salmonid diets. The density of woody debris...
Resource Type:: Masters Thesis
Full Text:: Managed Streams. Abstract approved: N. H. Anderson The importance of active-entry drift at a

Development and application of a new passive sampling device : the lipid-free tube (LFT) sampler

Creator:: Quarles, Lucas W.
Abstract:: Contaminants can exist in a wide range of states in aqueous environments, especially in surface waters. They can be freely dissolved or associated with dissolved or particulate organic matter depending on their chemical and physical characteristics. The freely dissolved fraction represents the most bioavailable fraction to an organism. These freely...
Resource Type:: Masters Thesis
Full Text:: ) Sampler. APPROVED: Kim A. Anderson Contaminants can exist in a wide range

The spatial distribution of beaver (Castor canadensis) impoundments and effects on plant community structure in the lower Alsea drainage of the Oregon Coast Range

Creator:: Perkins, Thaïs Erbel
Abstract:: Stream systems in the Pacific Northwest have come to be understood in the absence of beaver (Castor canadensis). To understand the effect of beaver upon riparian plant communities, four basins in the lower Alsea drainage were examined to determine the effect of beaver and their impoundments on streamside herbaceous/shrub and...
Resource Type:: Masters Thesis
Full Text:: . Mark Wilson and Dr. Kim Anderson, for their helpful comments and attention. I am grateful to Solyssa

Comparison between lichen, conifer needles, resin-based passive air sampling devices (PASDs), and snow to monitor semi-volatile organic compounds (SOCs) in the atmosphere

Creator:: Schrlau, Jill E.
Abstract:: The purpose of this research was to compare four different media that were used to monitor SOC atmospheric concentrations in remote ecosystems. The accumulation of semi-volatile organic compounds, including pesticides, polycyclic aromatic hydrocarbons (PAHs) and polychlorinated biphenyls (PCBs), was investigated in lichen, 2-year old conifer needles, resin-based passive air sampling...
Resource Type:: Masters Thesis
Full Text:: Landers, and Dr. Kim Anderson and Dr. Robert Collier. I would also like to thank Dr. Linda Geiser for

A study on the effects of enhanced pCO2 on open ocean diazotrophic assemblages

Creator:: Gradoville, Mary Rose
Abstract:: Biological di-nitrogen (N₂) fixation is a key process in open-ocean ecosystems, where the new nitrogen (N) provided by marine diazotrophs can support a large fraction of primary productivity and carbon (C) drawdown. Recent laboratory studies have shown that elevated pCO₂ enhances the rate of N₂ fixation by select laboratory isolates...
Resource Type:: Masters Thesis
Full Text:: ) genes. Applied and environmental microbiology 64:3444-3450. Zehr, J. P., J. B. Waterbury, P. J

Remineralization of marine particulate organic matter

Creator:: Burkhardt, Brian Gary
Abstract:: Marine microorganisms play a significant role in the cycling of nutrients in the open ocean through production, consumption, and degradation of organic matter (OM). Carbon (C), nitrogen (N), and phosphorus (P) are essential ingredients in every known recipe for life. However, the cycling of each of these elements proceeds at...
Resource Type:: Masters Thesis
Full Text:: decoupled, such that OM typically becomes rapidly P depleted and relatively C and N rich (Anderson and

Field checking the National Wetlands Inventory at South Slough, Oregon

Creator:: Graves, Jonathan K.
Abstract:: The U.S. Fish and Wildlife Service's National Wetlands Inventory (NWI) was developed to map U.S. wetlands comprehensively, following the Cowardin classification system. Wetlands are mapped by the NWI using small scale aerial photographs, but the inventory is not field checked in detail. The accuracy of this inventory has been questioned....
Resource Type:: Capstone Project
Date Created:
Full Text:: Resources Division of Water Quality, Waterbury, VT. Dahl, T.E. 1990. Wetlands losses in the United States

Evaluating "nuisance" beaver relocation as a tool to increase coho salmon habitat in the Alsea Basin of the central Oregon Coast Range

Creator:: Petro, Vanessa M.
Abstract:: Many stakeholders involved with stream restoration in the Pacific Northwest have discussed the potential benefits of using beaver dam construction activities (Castor canadensis) as a management tool to improve degraded stream habitat for anadromous salmon species. In addition, there has been growing interest in using nuisance beavers, primarily controlled by...
Resource Type:: Masters Thesis
Full Text:: dams retain sediment, reduce water velocity (Naiman et al. 1988) and bank erosion (Olson and Hubert

ScholarsArchive@OSU

Factors affecting slime accumulation in fiberboard mill process water

Sulfide metabolism in Lucina floridana, a sulfur symbiont-containing marine clam

Drift, wood, and grazing cattle : macroinvertebrates in managed streams

Development and application of a new passive sampling device : the lipid-free tube (LFT) sampler

The spatial distribution of beaver (Castor canadensis) impoundments and effects on plant community structure in the lower Alsea drainage of the Oregon Coast Range

Comparison between lichen, conifer needles, resin-based passive air sampling devices (PASDs), and snow to monitor semi-volatile organic compounds (SOCs) in the atmosphere

A study on the effects of enhanced pCO2 on open ocean diazotrophic assemblages

Remineralization of marine particulate organic matter

Field checking the National Wetlands Inventory at South Slough, Oregon

Evaluating "nuisance" beaver relocation as a tool to increase coho salmon habitat in the Alsea Basin of the central Oregon Coast Range

Limit your search

Academic Affiliation

Advisor

Commencement Year

Committee Member

Creator

Contributor

Date

Decade

Degree Field

Degree Level

Degree Name

File Format

Language

License

Location

Non-Academic Affiliation

Peer Reviewed

Resource Type

Rights Statement

Subject

Search Constraints

Search Results

Limit your search