One of the biggest challenges when conducting a national-scale assessment of lakes, such as the 2007 US National Lake Assessment (NLA), is finding enough reference lakes to set appropriate expectations for the assessed sites. In the NLA, a random design was used to select lakes for sampling to make unbiased...
A suspected glyphosate-resistant Italian ryegrass (Lolium multiflorum) (OR) population was collected from a filbert (Corylus avellana L.) orchard near Portland, OR. Based on the dose-response experiments conducted in the greenhouse, it was found that the suspected glyphosate-resistant population was approximately fivefold more resistant to glyphosate than the susceptible (S) population....
Calf diarrhea (scours) is a primary cause of illness and death in young calves. Significant economic losses associated with this disease include morbidity, mortality, and direct cost of treatment. Multiple pathogens are responsible for infectious diarrhea, including, but not limited to, Bovine coronavirus (BCV), bovine Rotavirus A (BRV), and Cryptosporidium...
In this thesis we focus on a graphical model for multivariate spatially
correlated data--isomorphic chain graphs (ICG; Gitelman and Herlihy, 2007).
We feel ICG allow flexibility for modeling spatial correlation and are intuitively
appealing because each model has an associated graph that visually represents a
complex multivariate system. We examine...
The effect of source of dietary carboyhydrate upon the concentration
and distribution of phospholipids in the fractions of human
blood was studied. Three healthy women received diets which contained
16% of the calories as protein, 40% as fat, and 44% as carbohydrate.
During the four dietary periods of six days...
Published September 1973. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Recent increases in the volume of canning grade tuna caught in the Western and Central Pacific Ocean (WCPO) has led to concern about the increasing catching capacity of the fleet of purse seine vessels operating in the fishery. In this paper Data Envelopment Analysis (DEA) is used to examine the...
Increasingly, objectives for forests with moderate- or mixed-severity fire regimes are to restore successionally diverse landscapes that are resistant and resilient to current and future stressors. Maintaining native species and characteristic processes requires this successional diversity, but methods to achieve it are poorly explained in the literature. In the Inland...
This thesis explores the complexity of relationships between communities and the ecosystems in which they live through a focus on forest restoration and fuels reduction on private land. As a case study, research took place in the Klamath-Siskiyou region of rural Northern California, in Humboldt and Siskiyou counties. The research...