The acute toxicity of Diquat (1:1-ethylene-2:2' dipyridylium
dibromide) and Dichlobenil (2, 6-dichlorobenzonitrile) to six selected
pond invertebrates was determined using the median tolerance limit
estimation method. Diquat was more toxic to the amphipod, Hyalella
azeteca than to the aquatic insects Callibaetis, Limnephilus,
Enallagma, Libellula, and Tendipedidae. The addition of mud...
During the summers of 1967 and 1968 the horizontal distribution and did vertical migrations of zooplankton were studied within the unique environment of Crater Lake. Sampling of the horizontal
distribution was done by towing plankton nets vertically in different locations. The vertical distribution was sampled by towing at different depths...
The basic objectives of this project can be stated as follows:
1. To test a methodology for improving the quality of impact statement content;
2. To provide opportunity for local participation in project design and decision making;
3. To provide more efficient procedures for complying with impact statement laws, thereby...
Two experiments were conducted to study the efficacy
of feeding lasalocid to cattle on pasture on a three times
weekly basis. In experiment 1, 72 crossbred yearling
steers were stratified across a randomized block design of
12 pens including three replications of four treatments.
Treatments consisted of: (1) .45 kg...
National statistics indicate that as many as 23
million adults in the United States are illiterate and
another 40 million lack literacy skills necessary to
function effectively or on more than a narrow basis in this
society. People without literacy skills or who have only
marginal reading ability find themselves...
Elodea densa Planch. was exposed to diquat (6, 7 dihydrodipyrido [1,2-a: 2', 1'-c] pyrazinediium dibromide), alone and in combination
with disodium endothall (disodium salt of 7-oxabicyclo [2.2.1]
heptane-2, 3-dicarboxyclic acid), and copper sulfate pentahydrate.
Studies were conducted in coastal lakes of Oregon infested with E.
densa. Dichlobenil (2, 6 dichlorobenzonitrile)...
There were six major objectives of this study. The first was to
identify the common career education competencies that elementary
and/or junior high school teachers should have as they adopt and
utilize the concepts of career education. The second purpose was to
identify where, in the professional preparation of the...
The 134-year old Frantz-Dunn House in Hoskins, Oregon is an intact, well-preserved example of rural Gothic architecture in the Willamette Valley. The old farmstead sits on a former Civil War Fort site and represents a link in the history of the region to the larger patterns of expansion in America...
In this dissertation I explore the application of two novel modeling techniques for improving risk analysis of vector-borne disease and discuss their potential use in integrating environmental risk assessment that guides environmental and public health decisions. Techniques for analyzing risk have been considered inadequate due to a lack of understanding...
Revised edition of the author's "Vegetation of Oregon and Washington", originally published by the U.S. Forest Service in 1973. Reprinted with new bibliographic supplement by the OSU Press in 1988.
The Forest Service and the Bureau of Land Management propose to adopt coordinated ecosystem management direction for the lands they administer within the range of the northern spotted owl. This Supplemental Environmental Impact Statement (SETS) presents as alternatives the options, with slight modifications, developed by the Forest Ecosystem Management Assessment...