Index Catalog // ScholarsArchive@OSU

You are What, When, Where, and How you Eat : Mercury in Avian Food Webs across Multiple Spatial Scales

Creator:: Jackson, Allyson K.
Abstract:: Human alterations of landscapes take many forms, one of which is anthropogenic pollution. Mercury (Hg) is a complex contaminant because its uptake into the food web is not driven entirely by loading to the system; methylation is necessary to make Hg bioavailable and toxic to fish and wildlife. Because methylation...
Resource Type:: Dissertation
Full Text:: , Caitlin Rumrill, Chelsea Wisotzkey, Kiira Siitari, Kali Doten, Lora Tennant, John Pierce, and Garth

White-breasted nuthatch density and nesting ecology in oak woodlands of the Willamette Valley, Oregon

Creator:: Viste-Sparkman, Karen
Abstract:: Habitat loss causes a reduction in available resources for wildlife, alters the configuration of remaining habitat, and may isolate wildlife populations. White-breasted nuthatches (Sitta carolinensis) are experiencing long-term population declines in the Willamette Valley of Oregon, where they are historically associated with oak woodlands. As secondary cavity-nesters, white-breasted nuthatches may...
Resource Type:: Masters Thesis

Where the Stream Meets the Road : Prioritizing Culvert Replacement for Fish Passage

Creator:: Reagan, Rachel E.
Abstract:: Streams across the world are highly fragmented due to the presence of in-stream barriers (e.g., dams and stream-road crossings), many of which restrict or block fish passage. Retrofitting or replacing these structures is a high priority for restoring habitat connectivity for native fishes and other aquatic organisms in the Pacific...
Resource Type:: Masters Thesis
Full Text:: Eckmann, Adam Pfleeger, Allyson Jackson, Emily Campbell, Rosie Gonzalez, John Speece, Steve Clark

When is bigger better? Early marine residence of middle and upper Columbia River spring Chinook salmon

Creator:: Tomaro, Londi M., Teel, David J., Peterson, William T., and Miller, Jessica A.
Abstract:: Early ocean residence is considered a critical period for juvenile salmon although specific survival mechanisms are often unidentified and may vary by species or life stage. Columbia River spring-run Chinook salmon Oncorhynchus tshawytscha abundance has declined dramatically since the early 1900s. To elucidate mechanisms of early marine survival, we tested...
Resource Type:: Article
Full Text:: across 8 yr between 1998 and 2008. Size at capture and marine growth rate after ~30 d marine residence

Wavelet analysis : linking multi-scalar pattern detection to ecological monitoring

Creator:: Anthony, Jill Ada Marie
Abstract:: Wavelet analysis is an analytical and modeling tool for optimizing sampling efficiency and accuracy, particularly in the context of designing long-term, large-scale monitoring plans. As a pattern analysis method that accommodates and preserves non-stationarity, wavelet analysis provides novel visualization and analytical capabilities for increased insight into interactions between multi-scalar heterogeneous...
Resource Type:: Dissertation
Full Text:: , Christian Torgerson, John Harrahy, Jeff Borchert, Matt Mahrt, Mark Ricca, Jeff Snyder, and many more. In

Water quality modulation of aluminum toxicity to rainbow trout (Oncorhynchus mykiss) : biological and physiological approaches

Creator:: Gundersen, Deke T.
Resource Type:: Dissertation
Full Text:: -h or 16-d to various aluminum and hardness concentrations or aluminum and humic acid

Virulence characteristics of infectious pancreatic necrosis virus (IPNV) in brook trout, Salvelinus fontinalis, fry

Creator:: Maret, Joseph J.
Abstract:: Infectious pancreatic necrosis (IPN) is an acute, contagious disease of trout fry and fingerlings caused by viruses of the family birnaviridae. IPN disease usually results in mortality that is inversely proportional to the age of the fish. While many studies have been carried out to increase our understanding of IPN,...
Resource Type:: Masters Thesis

Vertebral elemental markers in elasmobranchs : potential for reconstructing environmental history and population structure

Creator:: Smith, Wade D.
Abstract:: Differences in the chemical composition of calcified structures can be used to reveal natal origins, connectivity, metapopulation structure, and reconstruct the environmental history or movement patterns of many marine organisms. Sharks, skates, and rays (elasmobranchs) lack the calcified structures, known as otoliths, that are typically used for geochemical studies of...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE DISSERTATION OF Wade D. Smith for the degree of Doctor of Philosophy in

Vegetation response to prescribed fire in mountain big sagebrush ecosystems at Lava Beds National Monument, California

Creator:: Ellsworth, Lisa M.
Abstract:: Anthropogenic land use alterations such as livestock grazing and fire suppression have greatly altered sagebrush grasslands of the Great Basin, facilitating invasion of exotic annuals, increases in woody species, and losses of native species. Much of the current research surrounding wildland and prescribed fire in sagebrush dominated ecosystems has focused...
Resource Type:: Masters Thesis
Full Text:: , John Wilson, and Laurie Kellogg made long hot trips to the field a fun and stimulating part of

Vegetation and Small Mammal Responses to Western Juniper (Juniperus occidentalis) Control in Eastern Oregon

Creator:: Morozumi, Corinne N.
Abstract:: Shrub-steppe ecosystems of western North America provide habitat for many wildlife species, are important components of public and private rangelands, and offer recreational opportunities for millions of people. They are some of the most vulnerable ecosystems in the United States and have been altered by human activities such as livestock...
Resource Type:: Masters Thesis
Full Text:: National Forests in the John Day Ecological Province approximately thirty miles west of John Day, OR. The

ScholarsArchive@OSU

You are What, When, Where, and How you Eat : Mercury in Avian Food Webs across Multiple Spatial Scales

White-breasted nuthatch density and nesting ecology in oak woodlands of the Willamette Valley, Oregon

Where the Stream Meets the Road : Prioritizing Culvert Replacement for Fish Passage

When is bigger better? Early marine residence of middle and upper Columbia River spring Chinook salmon

Wavelet analysis : linking multi-scalar pattern detection to ecological monitoring

Water quality modulation of aluminum toxicity to rainbow trout (Oncorhynchus mykiss) : biological and physiological approaches

Virulence characteristics of infectious pancreatic necrosis virus (IPNV) in brook trout, Salvelinus fontinalis, fry

Vertebral elemental markers in elasmobranchs : potential for reconstructing environmental history and population structure

Vegetation response to prescribed fire in mountain big sagebrush ecosystems at Lava Beds National Monument, California

Vegetation and Small Mammal Responses to Western Juniper (Juniperus occidentalis) Control in Eastern Oregon

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