Index Catalog // ScholarsArchive@OSU

The impact of nutria (Myocastor coypus) on marsh vegetation in the Willamette Valley, Oregon

Creator:: Wentz, William Alan
Abstract:: The relation of nutria (Myocastor coypus) feeding to total abundance, species composition, and seasonal use of the marsh flora on the William L. Finley National Wildlife Refuge was studied during 1969 and 1970. Nutria numbers were estimated by livetrapping. Food habits data were compiled from observations of feeding nutria. Phenology,...
Resource Type:: Masters Thesis

Effects of ethyl mercury on some parameters of reproduction in ring-necked pheasants

Creator:: Christensen, Alan Gene
Abstract:: Prior to onset of the breeding season, a ration containing 18.4 mg/kg N-(Ethylmercuri)-p-toluene sulphonanilide was fed to 6 male and 16 female ring-necked pheasants (Phasianus colchicus). Birds receiving the mercury-treated ration were separated from the opposite sex. After receiving the mercury-treated ration for 0, 2, 4, 8, or 16 days,...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF ALAN GENE CHRISTENSEN (Name of

Studies on the molluscan and fish hosts of the "salmon poisoning" fluke, Nanophyetus salmincola (Chapin)

Creator:: Gebhardt, Gary Alan.
Abstract:: This study¹ was undertaken: (1) to obtain information on the distribution of the snail, Oxytrema silicula, in three coastal rivers in Oregon, and the seasonal incidence of infection in these snails and in snails from an inland stream, with the cercariae of the trematode, Nanophyetus salinincola; (2) to follow cercarial...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Gary Alan Gebhardt for the M. S

Movement and angler use of four foodfishes in Yaquina Bay, Oregon

Creator:: Beardsley, Alan J.
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE THESIS OF ALAN JACKSON BEARDSLEY[ for the

Distribution of Pacific herring spawn in Yaquina Bay, Oregon, and observations on mortality through hatching

Creator:: Steinfeld, James David
Abstract:: Studies were conducted during late winter and spring of 1970 to establish the extent of spawning of Pacific herring (Clupea harengus pallasi Valenciennes) in the Yaquina estuary, and to define the degree of egg mortality on certain substrates. Routine surveillance of the north shore of the estuary provided information on...
Resource Type:: Masters Thesis
Full Text:: . William McNeil, for his guidance throughout its planning and execution, and for his assistance in

Estimating vertebrate, benthic macroinvertebrate, and diatom taxa richness in raftable Pacific Northwest rivers for bioassessment purposes

Creator:: Hughes, Robert M., Herlihy, Alan T., Gerth, William J., and Pan, Yangdong
Abstract:: The number of sites sampled must be considered when determining the effort necessary for adequately assessing taxa richness in an ecosystem for bioassessment purposes; however, there have been few studies concerning the number of sites necessary for bioassessment of large rivers. We evaluated the effect of sample size (i.e., number...
Resource Type:: Article
Full Text:: taxa richness in raftable Pacific Northwest rivers for bioassessment purposes Robert M. Hughes & Alan

Effects of grass seed agriculture on aquatic invertebrate communities in seasonal wetlands of the southern Willamette Valley, Oregon

Creator:: Wyss, Lance A.
Abstract:: An estimated 99% of native wet prairie has been lost in the Willamette Valley, Oregon, but a large number of seasonal wetlands remain on private lands dedicated to grass seed production within the historical wet prairie landscape. Because agriculture is known to alter physical and chemical wetland conditions, I investigated...
Resource Type:: Masters Thesis
Full Text:: Alan T. Herlihy An estimated 99% of native wet prairie has been

Lotic macroinvertebrate distribution patterns in northeastern Oregon

Creator:: Gerth, William J.
Abstract:: This study was an investigation of lotic macroinvertebrate distribution in northeastern Oregon at two different spatial and biological scales. Examination of assemblages at a limited spatial scale revealed relationships with natural and disturbance gradients and led to questions about distribution of a population at broader spatial scales. In a 16...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF William J. Gerth for the degree of

Fish and amphibian use of intermittent streams within the upper Willamette Basin, Oregon

Creator:: Colvin, Randall William
Abstract:: In the fall through spring of 2002/03 and 2003/04, the composition of fish and amphibian communities were examined in intermittent streams in the upper Willamette river basin in western Oregon. I recorded standard aquatic habitat variables and water nutrient concentrations (nitrate and phosphate) and correlated them with fish and amphibian...
Resource Type:: Masters Thesis
Full Text:: Randall William Colvin for the degree of Master of Science in

Hydrologic and vegetation responses associated with restoration of wetlands in the Willamette Valley, Oregon

Creator:: Coleman, Gregory A.
Abstract:: I examined hydrological and plant community changes associated with the implementation of a restoration management plan in two riparian meadows located within an agricultural landscape of the central Willamette Valley, Oregon. I established exclosure fencing (a form of passive restoration) in one agricultural field and established fencing and plugged a...
Resource Type:: Masters Thesis
Full Text:: thank my distinguished committee members Alan Herlihy , Roy Haggerty, and Stan Gregory for their

Harmful algal blooms along the North American west coast region: History, trends, causes, and impacts

Creator:: Lewitus, Alan J., Horner, Rita A., Caron, David A., Garcia-Mendoza, Ernesto, Hickey, Barbara M., Hunter, Matthew, Huppert, Daniel D., Kudela, Raphael M., Langlois, Gregg W., Largier, John L., Lessard, Evelyn J., RaLonde, Raymond, Rensel, J. E. Jack, Strutton, Peter G., Trainer, Vera L., and Tweddle, Jacqueline F.
Abstract:: Along the Pacific coast of North America, from Alaska to Mexico, harmful algal blooms (HABs) have caused losses to natural resources and coastal economies, and have resulted in human sicknesses and deaths for decades. Recent reports indicate a possible increase in their prevalence and impacts of these events on living...
Resource Type:: Article
Full Text:: , causes, and impacts Alan J. Lewitus a,*, Rita A. Horner b, David A. Caron c, Ernesto Garcia-Mendoza d

Surprises and Insights from Long-Term Aquatic Data Sets and Experiments

Creator:: Dodds, Walter K., Robinson, Christopher T., Gaiser, Evelyn E., Hansen, Gretchen J. A., Powell, Heather, Smith, Joseph M., Morse, Nathaniel B., Johnson, Sherri L., Gregory, Stanley V., Bell, Tisza, Kratz, Timothy K., and McDowell, William H.
Abstract:: Long-term research on freshwater ecosystems provides insights that can be difficult to obtain from other approaches. Widespread monitoring of ecologically relevant water-quality parameters spanning decades can facilitate important tests of ecological principles. Unique long-term data sets and analytical tools are increasingly available, allowing for powerful and synthetic analyses across sites....
Resource Type:: Article
Full Text:: , SHERRI L. JOHNSON, STANLEY V. GREGORY, TISZA BELL, TIMOTHY K. KRATZ, AND WILLIAM H. MCDOWELL Long-term

Predation on an Upper Trophic Marine Predator, the Steller Sea Lion: Evaluating High Juvenile Mortality in a Density Dependent Conceptual Framework

Creator:: Horning, Markus and Mellish, Jo-Ann E.
Abstract:: The endangered western stock of the Steller sea lion (Eumetopias jubatus) - the largest of the eared seals - has declined by 80% from population levels encountered four decades ago. Current overall trends from the Gulf of Alaska to the Aleutian Islands appear neutral with strong regional heterogeneities. A published...
Resource Type:: Article
Full Text:: reduced natality. Instead, our data demonstrate continued low juvenile survival in the Prince William

News & Views, 2010

Creator:: Hall, Jim
Resource Type:: Other
Full Text:: non-profit conservation organization. William H. Mast B.S. 1972 Bill Mast has had a distinguished 40

News & Views, 2001-2002 Winter

Creator:: Hall, Jim
Resource Type:: Other
Full Text:: & Linda Guthery Jim & Margaret Haas William & Betty Haglan Wendell Haley Richard & Jean Hallock Austin

News & Views, 1997 Summer

Creator:: Edge, W. Daniel
Resource Type:: Other
Full Text:: Deibert, Mr. William DeMott, Mr. and Mrs. Glenn Dimick, Mrs. Mary Duncan, Mr. and Mrs. W. Lee Eide, Mr

News & Views, 1996 Summer

Creator:: Edge, W. Daniel
Resource Type:: Other
Full Text:: didn’t ‘fess up,’ but maybe he’s forgotten that he ever was so young and handsome. Thanks to William

News & Views, 1998 Summer

Creator:: Loegering, John P.
Resource Type:: Other
Full Text:: . William D. Knispel, Mr. Warren M. Krieger, Mr. and Mrs. Kenneth J. Kuhn, Mr. and Mrs. Lee W. Li, Dr

News & Views, 2011

Creator:: Hall, Jim
Resource Type:: Other
Full Text:: leadership role in Prince William Sound. In the wake of the spill, Rick Steiner was a leading voice for

News & Views, 2007

Creator:: Hall, Jim
Resource Type:: Other
Full Text:: Heppell Alan & Linda Herlihy Robert & Ann Herrmann Gary Hickman David & Mary Ann Hipply Dan & Patricia

News & Views, 2009

Creator:: Hall, Jim
Resource Type:: Other
Full Text:: helped lay the foundation for current salmon fisheries management in Prince William Sound and provided

News & Views, 2006

Creator:: Hall, Jim
Resource Type:: Other
Full Text:: Grant with Dr. Alan Shanks (UO) to conduct post-doctoral studies that expanded components of my

News & Views, 2002

Creator:: Hall, Jim
Resource Type:: Other
Full Text:: Wildman, Kelly Wildman, Alan Herlihy, and Dixon Landers. The primary goal of the Consortium’s research

News & Views, 2004

Creator:: Hall, Jim
Resource Type:: Other
Full Text:: 1995. Mark Raggon—William Q. Wick Memorial Scholarship, $2,000; to benefit an undergraduate student in

The Relationship between Hydroregime and Coho Salmon (Oncorhynchus kisutch) Spawning in Three Streams of the Smith River Watershed, Oregon

Creator:: Baxter, Mackenzie R.
Abstract:: Migration and spawning phenology of Pacific Salmon is linked to the hydroregime, and thought to be triggered by increases in river discharge and decreases in water temperature. However, little data exists that describes direct fine-scale linkages between the hydroregime and spawning in Coho Salmon. This study evaluated the spatial and...
Resource Type:: Masters Thesis

News & Views, 2003

Creator:: Hall, Jim
Resource Type:: Other

News & Views, 2008

Creator:: Hall, Jim
Resource Type:: Other
Full Text:: Research Unit, Bob McVey (later Regional Director for NMFS in Ju- neau), and Alan Courtright (later Asst

Biology of the pile perch (Rhacochilus vacca)

Creator:: Wares, Paul Gordon
Abstract:: Data were gathered on the life history of the pile perch (Rhacochilus vacca) from Yaquina Bay, Oregon, between April, 1966, and July, 1967. Pile perch feed on the bottom and consume mostly molluscs, barnacles and decapod crustaceans. Food habits varied among seasons and locations within the bay, whereas the diet...
Resource Type:: Masters Thesis
Full Text:: of Mr. Alan Beardsley during the field work. The fyke net used in this study was loaned by the Fish

Invertebrate composition and distribution in desert springs of Oregon

Creator:: Mauger, Susan
Abstract:: In the summers of 1998 and 1999, aquatic invertebrate and plant communities were sampled from nineteen springs in the Warner Basin of southeastern Oregon. Across the landscape, these springs exhibited a broad range in water temperature (5-24°C), pH, conductivity, elevation, and gradient. Within a particular spring, water temperature and chemistry...
Resource Type:: Masters Thesis
Full Text:: Management. I am very grateful to Alan Munhall and the BLM, Lakeview District staff, who provided extensive

Studies on the host-parasite relationships of the "salmon poisoning" trematode--Nanophyetus salmincola (Chapin)

Creator:: Baldwin, Norman Lewis
Resource Type:: Masters Thesis

Behavior and survival of coho salmon, Oncorhynchus kisutch (Walbaum), in Sashin Creek, southeastern Alaska

Creator:: Crone, Richard Allan
Abstract:: Behavior and survival in fresh water were studied for three brood years of coho salmon in Sashin Creek, Alaska, from October 1963, until September 1966. Investigations of spawning adults were conducted to determine numbers of spawners, distribution on the spawning grounds, effects on pink salmon, age composition, redd life, fecundities,...
Resource Type:: Masters Thesis
Full Text:: appreciation is expressed to Dr. William J. McNeil, who conducted the investigation of spawners during the

River-dependent bird species as potential indicators of ecosystem response to removal of dams on the Elwha River, Washington

Creator:: Blackie, Barbara
Abstract:: If two dams on the Elwha River are removed, the ecosystem will be open to the downstream flow of sediments and the upstream flow of marine nutrients in the form of anadromous fish. Nutrient enrichment may influence trophic dynamics of the entire ecosystem, extending beyond the aquatic boundary. I assessed...
Resource Type:: Masters Thesis
Full Text:: inspiration. Fred, thanks for reminding me to go back to school, Alan, thanks for enduring my statistical

Ecology of the striped seaperch, Embiotoca lateralis, in Yaquina Bay, Oregon

Creator:: Gnose, Charles E.
Resource Type:: Masters Thesis

News & Views, 2005

Creator:: Hall, Jim
Resource Type:: Other
Full Text:: possum. The work is a collabora- tive effort between Drs. William J. Foley (Australian National

California condors in the Pacific Northwest : integrating history, molecular ecology, and spatial modeling for reintroduction planning

Creator:: D'Elia, Jesse
Abstract:: Reintroduction programs are increasingly being used to save animals from extinction and aid in their recovery. The California Condor (Gymnogyps californianus), one of the most endangered birds in the world, is a remarkable example of how reintroduction programs can help rapidly increase a species' population numbers and range following a...
Resource Type:: Dissertation

Rare, endangered, and recently extirpated mammals in Oregon

Creator:: Olterman, James Howard
Abstract:: This paper lists, and gives individual accounts of, those Oregon mammals that at some time have been referred to as being of a status other than common. Although rare and endangered wildlife species were listed on a national level in the United States, the large areas of land included in...
Resource Type:: Masters Thesis
Full Text:: William Sound, Alaska, or from California. On July 18, 1970, 31 sea otters were transported by air from

Combining Disparate Data Sources with Ecosystem and Integrated Models: Case Studies for Improving Management of Protected Species

Creator:: Chasco, Brandon E.
Abstract:: Globally, the number of threatened species is increasing and conserving them is a high priority to the scientific community. Assessing the status of these protected species is challenging due to missing, contested, and or contradictory data streams. Integrated models (IMs) provide a statistical framework for combining disparate data sources to...
Resource Type:: Dissertation
Full Text:: , and Alan Bolten for the close collaborations and they data they offered for the sea turtle chapter

Fatty acids of exercised and non-exercised salmon

Creator:: Saddler, James Bryan
Abstract:: The fatty acids of coho salmon were identified and then a study was conducted to determine the effects of exercise on the fatty acids of salmon forced to swim against water velocities of 52, 54, 56, and 59 cm/sec, The shorter and lighter salmon were less competent at a given...
Resource Type:: Dissertation

Nesting season ecology of marbled murrelets at a remote mainland fjord in southeast Alaska

Creator:: Barbaree, Blake A.
Abstract:: This thesis focuses on the nesting ecology and marine space use of Marbled Murrelets (Brachyramphus marmoratus) during the 2007 and 2008 nesting seasons in and around Port Snettisham, a remote mainland fjord in Southeast Alaska. Marbled Murrelets (murrelets) are a declining species throughout most of their range, and their conservation...
Resource Type:: Masters Thesis
Full Text:: thanks and love to my mother Renee, father Alan, brother Tyler, and sister Leah

Habitat relationships of birds and young-growth Douglas-fir in northwestern California

Creator:: Marcot, Bruce G.
Abstract:: Ninety-one species of birds were surveyed in grass/forb, early and late shrub/sapling, pole, and medium sawtimber stages of young-growth Douglas-fir in northwestern California; patterns of bird distribution and abundance were related to habitat conditions and even-age silvicultural treatments. Seven species (band-tailed pigeon, western wood pewee, dusky flycatcher, western bluebird, fox...
Resource Type:: Dissertation
Full Text:: Kahl, William Laudenslayer, Jeff Mattison, Dick Nute, C. J. Ralph, Edward Toth, and many Forest

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