The portion of the Oregon coast extending from Cape Blanco south
into California has long been recognized as a distinct physiographic region,
with probable ramifications for prehistoric subsistence and settlement
patterns. Several researchers have proposed models outlining a greater
reliance upon marine/littoral resources among groups within this region, while
Initially, components of an aquatic food web were examined to study impacts of recreational use on the aquatic ecology of Quartzville Creek, Oregon in 1995 and 1996. Measurements of the food web components consisted of observations of harlequin ducks (Histrionicus histrionicus), visual counts of the larval caddisfly Dicosmoecus gilvipes, benthic...
Landscape level habitat alterations can have different effects on different
species. Species that are more highly specialized for some important aspect of their
natural history are expected to be more sensitive to habitat alteration than are those
that are generalists. The Northern Pygmy-Owl (Glaucidium gnoma) has been
suggested as a...
Feasibility of ohmic heating to overcome gel-weakening in Pacific whiting surimi
was investigated. An ohmic heating apparatus was developed using two rhodium-coated
stainless steel electrodes inside a polyvinyl chloride (PVC) tube, a variable transformer,
and voltage and current transducers. Rapid heating associated with the ohmic process
quickly inactivated endogenous proteinase(s),...
This research focused on features of a genetically
isolated population of cutthroat trout (Oncorhynchus clarki)
in the Triangle Lake basin of coastal Oregon. A falls at
the outlet of Triangle Lake has blocked upstream migration
of trout and anadromous salmonids into the basin. Cutthroat
trout were found throughout the six...
We believe concreteness, direct manipulation and responsiveness in a visual
programming language increase its usefulness. However, these characteristics present a
challenge in generalizing programs for reuse, especially when concrete examples are used
as one way of achieving concreteness. In this thesis, we present a technique to solve this
Mercury is a toxic heavy metal released into the environment from both natural and anthropogenic sources. The organic form of mercury is a potent neurotoxin that is especially dangerous to developing nervous systems. Results of recent studies have caused the Food and Drug Administration (FDA) and the Environmental Protection Agency...