Index Catalog // ScholarsArchive@OSU

Estimation of Population Age Structure, Detection Probability, and Density of Red Tree Voles in Oregon

Creator:: Marks-Fife, Chad A.
Abstract:: Red tree voles (Arborimus longicaudus) are a unique species of Arvicoline rodent found in western Oregon and northwest California. Their preferred habitat is mature and old-growth coniferous forest dominated by Douglas-fir (Pseudotsuga menziesii). Tree voles are an important prey item for northern spotted owls and many other predators, but are...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Chad A. Marks-Fife

Factors influencing nest success of greater sandhill cranes at Malheur National Wildlife Refuge, Oregon

Creator:: Ivey, Gary L.
Abstract:: I developed a priori hypotheses and used logistic regression to model Greater Sandhill Crane (Grus canadensis tabida) nest success in relation to weather, habitat and management variables for cranes breeding at Malheur National Wildlife Refuge (MNWR) in southeast Oregon. My primary interest was to investigate the effects of habitat conditions...
Resource Type:: Masters Thesis
Full Text:: . Katie Dugger and Dr. Chad Boyd for their service as committee members. I am indebted to Carroll D

Prey Patch Patterns Predict Habitat Use by Top Marine Predators with Diverse Foraging Strategies

Creator:: Benoit-Bird, Kelly J., Battaile, Brian C., Heppell, Scott A., Hoover, Brian, Irons, David, Jones, Nathan, Kuletz, Kathy J., Nordstrom, Chad A., Paredes, Rosana, Suryan, Robert M., Waluk, Chad M., and Trites, Andrew W.
Abstract:: Spatial coherence between predators and prey has rarely been observed in pelagic marine ecosystems. We used measures of the environment, prey abundance, prey quality, and prey distribution to explain the observed distributions of three co-occurring predator species breeding on islands in the southeastern Bering Sea: black-legged kittiwakes (Rissa tridactyla), thick-billed...
Resource Type:: Article
Full Text:: , Scott A. Heppell2, Brian Hoover4, David Irons5, Nathan Jones4, Kathy J. Kuletz5, Chad A. Nordstrom3

Effects of dieldrin on the intrinsic rate of increase of the guppy, Poecilia reticulata Peters

Creator:: Roelofs, Terry Dean
Resource Type:: Dissertation
Full Text:: Peters. Abstract approved: Redacted for Privacy Charles E. Warren The effects of dieldrin (not less

The freshwater fishes of Iran

Creator:: Armantrout, Neil B.
Resource Type:: Dissertation
Full Text:: tract approved: Dr. Carl E. Bond The freshwater fish fauna of Iran is represented by 3 classes, 1

Movement Ecology and Population Dynamics of the Endangered Hawaiian Duck (Anas wyvilliana)

Creator:: Malachowski, Christopher P.
Abstract:: Fundamental objectives in the field of conservation biology involve understanding the processes that influence small and declining populations and applying that knowledge to develop appropriate monitoring strategies and targeted management and conservation actions. Critical first steps in determining the relative role of factors that drive population declines involves estimation of...
Resource Type:: Dissertation
Full Text:: work and data management, including Chad Billat, Megan Dalton, Julie Unfried, Jillian Cosgrove, Jay

Carp, Climate, and Water Quality: Applying Systems Modeling to Ecosystem Recovery in Malheur Lake

Creator:: Pearson, James B.
Abstract:: Shallow lakes exist in either a clear or turbid state, with the clear state characterized by an abundance of aquatic macrophytes, diverse aquatic biota, low water column nutrients and phytoplankton biomass, whereas the turbid state is characterized by the opposite. These two distinct states are maintained by reinforcing (positive) feedback...
Resource Type:: Dissertation
Full Text:: , Jeff Mackay, Linda Beck, Chad Karges, Carey Goss, Dr. Doug Peterson, Dan Craver, and Suzanne

News & Views, 2009

Creator:: Hall, Jim
Resource Type:: Other
Full Text:: information after Aug. 1 will be: P.O. Box 1955 Soldotna, AK 99669 e-mail: thmclain02@yahoo.com Don Trethewey

Investigating Demographic and Evolutionary Factors Important for Fish Reintroduction

Creator:: Sard, Nicholas M.
Abstract:: Reintroduction programs are used to re-establish species back into their historical habitat. Most reintroduction programs have failed and few papers have evaluated factors that may be important to Pacific salmon. The 158 meter tall Cougar Dam has blocked Chinook salmon (Oncorhynchus tshawytscha) from accessing 40 kilometers of historical spawning and...
Resource Type:: Dissertation
Full Text:: Chad Helms, Doug Garletts, Greg Taylor, David Griffith, and Rich Piaskowski for all their hard work

Aspects of the foraging ecology of humpback whales (Megaptera novaeangliae) in Frederick Sound and Stephens Passage, Southeast Alaska

Creator:: Szabo, Andrew R.
Abstract:: The North Pacific humpback whale (Megaptera novaeangliae) population has been increasing at an average annual rate of ~6% since the early 1990s. In northern Southeast Alaska alone, there are now more whales than estimated for the entire North Pacific several decades ago. An understanding of how this growing population is...
Resource Type:: Dissertation
Full Text:: and continued until late June, whereas E. pacifica began spawning in early June and continued until

ScholarsArchive@OSU

Estimation of Population Age Structure, Detection Probability, and Density of Red Tree Voles in Oregon

Factors influencing nest success of greater sandhill cranes at Malheur National Wildlife Refuge, Oregon

Prey Patch Patterns Predict Habitat Use by Top Marine Predators with Diverse Foraging Strategies

Effects of dieldrin on the intrinsic rate of increase of the guppy, Poecilia reticulata Peters

The freshwater fishes of Iran

Movement Ecology and Population Dynamics of the Endangered Hawaiian Duck (Anas wyvilliana)

Carp, Climate, and Water Quality: Applying Systems Modeling to Ecosystem Recovery in Malheur Lake

News & Views, 2009

Investigating Demographic and Evolutionary Factors Important for Fish Reintroduction

Aspects of the foraging ecology of humpback whales (Megaptera novaeangliae) in Frederick Sound and Stephens Passage, Southeast Alaska

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