Pacific Northwest and California freshwater resources are key elements in the life history and ecology of Pacific salmon and steelhead listed as threatened or endangered under the Endangered Species Act. Risk to listed Pacific salmonid species can be assessed by evaluating the spatial and temporal co-occurrence of salmonid species at...
Chlorpyrifos (CPF) is a widely used broad-spectrum organophosphate insecticide. Following exposures, CPF and its more toxic oxon metabolite (CPFO) elicit neurotoxic effects by inhibiting the activity of the acetylcholinesterase enzyme (AChE), resulting in altered fitness and death at high doses. Following exposure, organisms bioactivate CPF to CPFO through the Cytochrome...
A time dependent model of the shallow, tropical convective boundary layer is
developed and tested. To simplify the treatment of thermodynamic processes and
return to first principles of physics, conserved quantities of entropy and total
water density are used as primary model variables. In addition, a new shallow
cumulus parameterization...
Since the isolation of the Oregon sockeye salmon virus (OSV) in
1958, extensive investigations have been undertaken to characterize
the properties of this virus. The results of these investigations
have indicated that OSV is a single-stranded RNA virus which contains
essential lipids and has a density of 1.16 gm/cm³ in...
The main objective of the study was to identify potential groundwater problem areas in Western Marion County using a geographic information system (GIS) and the Oregon Water Resources Department's (OWRD's) well log database (see figure 1). Potential groundwater problem areas were identified based on their mean static water level. According...
The giant hairy desert scorpion, Hadrurus arizonensis, is a long-lived species
of North American scorpion that is presented here as an important model for research
in mating systems evolution and sexual selection. Many behaviors found in this
species were undocumented and are described here for the first time. This thesis...
Purpose
The purpose of this project is to aid the Umpqua Regional Council of Governments as
they try to identify buildable lands in Douglas County, Oregon particularly in the cities of
Reedsport and Sutherlin. This project will help Reedsport upgrade its recently completed
Buildable Lands Inventory and provide Sutherlin with...
Water fluoridation is considered one of the top ten greatest health achievements of the twentieth century due to its effectiveness in reducing the prevalence of dental caries. However, despite extensive research on the subject, there is little information currently available about how the constituents of drinking water affect the uptake...