The red-band trout is native to many small, isolated streams in southeastern Oregon. A study of the red-band population of Three-
mile Creek and Reservoir was conducted from August 1973 to June 1975. Data were collected concerning population size, age composition,
growth, biomass, recruitment, fecundity, and habitat. During the spring...
This report is intended for citizen advocates. The goal is to provide a concise summary of current issues and problems for native salmonids in the Upper Deschutes and describe the actions needed to resolve those problems. It is based on information from all federal and Oregon agencies involved in the...
Food webs consist of a combination of bottom-up (resource-driven) and top-down (predator-driven) effects. The strength of these effects depends on the context in which they occur. I investigated food web (trophic) relationships between wolf (Canis lupus) predation, elk (Cervus elaphus) herbivory, aspen (Populus tremuloides Michaux) recruitment, and fire. The study...
Relieving phosphorus loading is a key management tool for controlling Lake Erie eutrophication. During the
1960s and 1970s, increased phosphorus inputs degraded water quality and reduced central basin hypolimnetic
oxygen levels which, in turn, eliminated thermal habitat vital to cold-water organisms and contributed to the
extirpation of important benthic macroinvertebrate...
Intracellular dNTP pool sizes are highly asymmetric, with dGTP usually
comprising 5 to 10% of the sum of the dNTP pools. The work presented in this
dissertation addresses the question of whether the underrepresentation of dGTP is
related to its potential to be oxidized by reactive oxygen species. 8-oxo-guanine is...
This report provides a strategic approach developed by a Western Association of Fish and
Wildlife Agencies interagency working group for conservation of sagebrush ecosystems,
Greater sage-grouse, and Gunnison sage-grouse. It uses information on (1) factors that influence
sagebrush ecosystem resilience to disturbance and resistance to nonnative invasive
annual grasses and...
We compiled existing data and information to characterize the condition and trends in high
priority natural resources in Ebey’s Landing National Historical Reserve (EBLA, or "the
Reserve"). We identified 29 indicators to evaluate seven major resource concerns. For each indicator we
attempted to define reference conditions to which we could...
Reintroduction of wolves to Yellowstone National Park (YNP) in 1995-96 provided a rare opportunity to observe the response of an ecosystem to the return of a top predator, including possible reversal of decades of decline of aspen, cottonwood, and tall willows suppressed by intensive herbivory on elk winter ranges. To...
