Index Catalog // ScholarsArchive@OSU

Hydrothermal links between ocean plateau formation and global anoxia at the Cenomanian-Turonian boundary

Creator:: Snow, Laura J.
Abstract:: The Cretaceous was a period of extreme climatic conditions accompanied by major perturbations in ocean-atmosphere biogeochemical cycles. One of the most intriguing features is the sporadic interruption of normal marine pelagic sediment deposition by organic rich sediments deposited during oxygen-deficient conditions (ocean anoxic events OAEs). A current model for the...
Resource Type:: Masters Thesis
Full Text:: providing lots of support and feedback through the whole process. Thanks to Gary Klinkhammer and Jim

Biology of the two external Acarapis species of honey bees : Acarapis dorsalis Morgenthaler and Acarapis externus Morgenthaler (Acari: Tarsonemidae)

Creator:: Ibay, Lilia Armendez
Abstract:: The biology of the two external Acarapis mites of honey bees, Acarapis dorsalis Morgenthaler and Acarapis externus Morgenthaler was studied. It was observed that both Acarapis species have similar developmental period (8-9 days) with males emerging earlier than females. Mite load and infestation rate of A. dorsalis decreased as bees...
Resource Type:: Masters Thesis
Full Text:: help provided by Dr. Jim McIver, Marshal Dunham and Sonia Rubico. To Jim, Bing F., Bing R., Tom

Use of Landscape Characteristics to Quantify Hybridization Risk Between Native and Introduced Salmonids

Creator:: Manning, Michael A.
Abstract:: The introduction of non-native species can negatively impact native species through reduced genetic fitness resulting from hybridization. The lack of spatiotemporal data of hybrids occurrences makes assessing hybridization risk difficult. Here, I developed a spatially-explicit GIS Hybridization Risk Model (HRM) between native ESA-listed Bull Trout and introduced Brook Trout by...
Resource Type:: Masters Thesis

A Comparative Study of Foraging Behavior and Disturbance Regimes in Urban Versus Agricultural Habitats used by Cackling Geese Wintering in the Willamette Valley, Oregon

Creator:: Harrington, Erin R.
Abstract:: The Cackling goose (Branta hutchinsii minima) population has increased from a low of 20,000 in 1984 to the current population of 220,000-300,000 (Stehn 2012, Sanders 2013). As the Cackling goose population began to recover in the late 1990s, the majority of the population relocated from wintering in California to the...
Resource Type:: Masters Thesis
Full Text:: . And thanks to Jim Rivers for giving me my first opportunity to assist with fieldwork, which further

An exploratory study of the social factors of small dam removal : Chiloquin Dam at Sprague River Mile 0.87, Oregon

Creator:: Hatch, Jason M.
Abstract:: Several reports related to dams and dam removal have been released this decade by non-governmental organizations including Dam Removal: Science and Decision Making by The Heinz Center which focused on small dams, since most of the dams removed to date as well as those likely to be removed in the...
Resource Type:: Masters Thesis
Full Text:: Endangered Species Act of 1973 (Bowman 2002). Johnson and Graber (2002:732) suggest, "Societal values (and

Low molecular weight organic acids in forest soils

Creator:: Hayden, John
Abstract:: Two studies concerning low molecular weight organic acids in soils were conducted. In the first study, anion exclusion chromatography was used to separate and identify 12 common organic acids, and the accuracy, precision and detection limits of the method were determined. The method was found to be sensitive and accurate...
Resource Type:: Masters Thesis
Full Text:: from pure acid salts or liquids. Individual standards (10, 100, and 500 JiM) and mixed standards (500

Great white mystery : learning from aquarium exhibits

Creator:: Wharton, James M.
Abstract:: In the summer of 2001 the Oregon Coast Aquarium opened a new exhibit on sharks entitled, "Great White Mystery: What Happened to Surfer Bob?" For the purposes of this study, a survey was designed to determine whether visitors to the new exhibit learned factual information or left with changed attitudes...
Resource Type:: Masters Thesis
Full Text:: Elliot Debbie Hamlin Donna Fogarty Gay Hagen Irene Craver Jim Hoover Joyce Riddell Kay Baiz Lyn

Assessment of mule deer fawn survival and birth site habitat attributes in south-central Oregon

Creator:: Speten, David
Abstract:: Mule deer (Odocoileus hemionus) populations in south-central Oregon are near their lowest levels since census efforts began in 1961. I investigated fawn survival, cause-specific mortality, and factors contributing to mortality from 2010 – 2012 to identify potential causes for the decline. I also explored pre-parturition and parturition site characteristics. I...
Resource Type:: Masters Thesis
Full Text:: . ............................................................. 67 DEDICATION I dedicate this to my parents Jim and Donna Speten who

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:: ; Li et al 1999; Béja.et al 2000; Bowman et al 2000; Eilers et al 2000; Urakawa eta! 2000; Eilers et

Energy and nutrient intake, and body composition of elderly women with different ages and levels of physical activity

Creator:: Bell, Elizabeth J.
Abstract:: The US population over the age of 65 years is growing rapidly, with elderly women outnumbering men by 50 percent. Studies show that aging is often accompanied by reduced energy intake, inadequate nutrition, and the loss of lean body mass with a subsequent increase in body fat, as well as...
Resource Type:: Masters Thesis
Full Text:: partly due to reduced energy requirements and intake (Bowman and Rosenberg, 1982; Forbes and Reina

ScholarsArchive@OSU

Hydrothermal links between ocean plateau formation and global anoxia at the Cenomanian-Turonian boundary

Biology of the two external Acarapis species of honey bees : Acarapis dorsalis Morgenthaler and Acarapis externus Morgenthaler (Acari: Tarsonemidae)

Use of Landscape Characteristics to Quantify Hybridization Risk Between Native and Introduced Salmonids

A Comparative Study of Foraging Behavior and Disturbance Regimes in Urban Versus Agricultural Habitats used by Cackling Geese Wintering in the Willamette Valley, Oregon

An exploratory study of the social factors of small dam removal : Chiloquin Dam at Sprague River Mile 0.87, Oregon

Low molecular weight organic acids in forest soils

Great white mystery : learning from aquarium exhibits

Assessment of mule deer fawn survival and birth site habitat attributes in south-central Oregon

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.

Energy and nutrient intake, and body composition of elderly women with different ages and levels of physical activity

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