Data from the southern Cascade Mountains of
Oregon has been collected for application in computer
analysis of snowfields. Vegetation type, canopy
cover, slope, aspect, insolation, and snowfield
ground truth delineation are given consideration.
In addition, a procedure for transferral of data
onto Landsat imagery was derived.
Full Text:
EXTENT; SOUTHERN CASCADE MOUNTAINS, OREGON
by
DAVID BILL PARKER
A RESE;RCH PAPER
suiitted to
THE
In this study, pheromone and skin lipid samples collected from red-sided garter snakes (Thamnophis sirtalis parietalis) were exposed directly to either full-spectrum light or full-spectrum plus UVB light. In addition, female and male snakes were exposed to daily doses of either full-spectrum or full-spectrum and UVB light, after which the...
This research related resin synthesis variables of phenolformaldehyde resins to their chemical content and reactivity. The study was part of a larger project correlating resin properties to their performance as plywood adhesives. Formaldehyde-to-phenol and Na0H-to-phenol mole ratios were examined within the ranges used commercially. I also examined various proportions of...
A trial was conducted to determine the effects of increasing
levels of water restriction on body weight, feed consumption, feed
conversion and mortality of broiler chicks to eight weeks of age.
In addition, the effects of water restriction on water:feed ratios,
water consumption per pound of body weight and on...
The objective of this research is to shed light on the phenomenon of independent volunteer traveling. It represents a form of tourism in which travelers independently organize their own volunteer efforts and typically provide assistance to local people in return for room and board. Travelers operate outside the confines of...
The proper way to order knowledge and find truth about the natural world in the eighteenth century lay in one’s ability to correctly learn and employ the quality of reason. While all had the right to seek reason, only a privileged few achieved its proper use, creating an intellectual elite...
The Harderian gland (HG) of the red-sided garter snake, Thamnophis sirtalis parietalis, is a secretory structure that plays a role in the vomeronasal system by solubilizing semiochemicals such as prey chemoattractants and the female sexual attractiveness pheromone. The HG produces secretions containing pheromone-binding proteins that form a complex with pheromone...
Depleted species of rockfish (Sebastes spp.) from the Northeast Pacific experience high discard mortality due to "barotrauma," induced from the rapid change in pressure during capture. Research suggests rockfish have the potential to survive barotrauma if immediately recompressed, but the potential for long-term recovery is unknown. In this project, we...
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Carl. B. Schreck Steven J. Parker
Depleted species of rockfish (Sebastes spp.) from
Vertebrates communicate with one another and coordinate intraspecific reproduction by using a variety of sexually dimorphic signals, such as plumage, ornaments, sounds, and/or scents. These sexual dimorphisms are maintained by physiological factors, typically sex-specific hormones (though see Chapter 3 for an exception). The purpose of the research in this dissertation...
Although previous research in central Oregon has shown soil compaction can lead to a decline in site productivity, the subject is not understood well enough to predict the growth changes resulting from a given level of soil compaction. A study was initiated to relate the basal area, height and volume...