Index Catalog // ScholarsArchive@OSU

Effects of different yield functions and initial inventory on harvest schedules for Douglas-fir

Creator:: Vomocil, Marc Grayson
Abstract:: The procedure of forest level harvest scheduling incorporates many inputs of an uncertain nature. Forest management planners must be aware of the possible effects of the use of erroneous input information on the results of their planning. With that knowledge they can better plan a risk management strategy and make...
Resource Type:: Masters Thesis

Germination and first-year survival of red alder seedlings in the central Coast Range of Oregon

Creator:: Haeussler, Sybille
Abstract:: The role of disturbance in seed germination and first-year survival of red alder (Alnus rubra) was studied over two growing seasons at four sites representing a climatic gradient within the central Coast Range of Oregon. Disturbance affected red alder seed germination and seedling establishment by altering the temperature and moisture...
Resource Type:: Masters Thesis

Forest ant composition, relative abundances, and foraging following aerial spraying of carbaryl to suppress Western Spruce budworm

Creator:: Murphy, Christopher F.
Abstract:: An outbreak of western spruce budworm Choristoneura occidentalis in the Blue Mountains of eastern Oregon in 1983 was treated with helicopter applied carbaryl. Effects of the spraying on forest ants were determined from pre- and postspray samples taken from two carbaryl sprayed and two unsprayed plots. In each 0.75-ha plot,...
Resource Type:: Masters Thesis
Full Text:: , suggestions, and timely reviews of my thesis. I especially thank my major professor, Dr. Brian Croft, for his

The SELCTV database : the susceptibility of arthropod natural enemies to agricultural pests to pesticides

Creator:: Theiling, Karen M.
Abstract:: Documentation of the side effects of pesticides on arthropod natural enemies has expanded rapidly since the 1950's as part of an increase in non-target side effects literature. Most reviews have been based on empirical analysis of selected literature. The SELCTV database was developed to make a larger information base accessible...
Resource Type:: Masters Thesis

A tutorial interface for a problem-solving production system

Creator:: Lantz, Brian Scott
Abstract:: The system described is an interface between a student and a problem-solving production system that solves some class of problems. Its purpose is to help a student learn some part of the realm of problem solving. As a student attempts to solve a problem the system controls the firing of...
Resource Type:: Masters Thesis
Full Text:: system AN ABSTRACT OF THE THESIS OF Brian Lantz for the degree of Master of Science in Computer

An analysis of risk management strategies for southern Alberta feedlots

Creator:: Freeze, Brian S.
Abstract:: Feedlot finishing of beef cattle in Southern Alberta involves income risk due to the variability of prices of feeders, feed and finished cattle. Several strategies are available to reduce this risk, including hedging of cattle on feed, participation in a Federal- Provincial government and producer established income stabilization program for...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE THESIS OF Brian S. Freeze for the degree of

Effects of irrigation frequency on yields of winter wheat

Creator:: Nakamura, Brian Clifford
Abstract:: Deliberately underirrigating a crop may yield economic benefits. The optimal use of water by an irrigator should be achieved under a deficit irrigation regime. It is important to know how water deficits affect yields and the interaction of the deficits with the scheduling of irrigations. A field experiment was conducted...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Brian Clifford Nakamura for the

Effects of projected yields and initial inventories on harvest schedules of Douglas-fir

Creator:: Vomocil, Marc G., Tedder, Philip L., and Oregon State University. Forest Research Laboratory
Abstract:: Comparisons were made to determine how the uncertainty of initial inventories and projected yields affect harvest schedules for Douglas-fir. Results indicate that short-run harvests are most affected by errors in initial inventory, with the effect being less than the size of the error. Long-run harvests are most affected by yield...
Resource Type:: Technical Report
Full Text:: OF PROJECTED YIELDS AND INITIAL INVENTORIES ON HARVEST SCHEDULES OF DOUGLAS-FIR MARC G. VOMOCIL

The utilization of Netarts Bay by juvenile chum salmon, 1984

Creator:: Wilson, C. D. and Pearcy, William G.
Abstract:: The School of Oceanography, Oregon State University, initiated a study during the spring of 1984 to investigate the utilization of Netarts Bay by juvenile churn salmon. Specific objectives the first year were to determine: 1) the relative numbers of hatchery arid wild churn salmon, 2) the nursery areas utilized by...
Resource Type:: Technical Report
Full Text:: UTILIZATION OF NETARTS BAY BY JUVENILE CHUM SALMON - 1984 by C.D. Wilson and W..G. Pearcy College of

Marine herbivore-plant interactions : the feeding ecology of the sea slug Placida dendritica

Creator:: Trowbridge, Cynthia D.
Abstract:: The feeding ecology of a common temperate mesoherbivore, the oligophagous sea slug Placida dendritica (Gastropoda: Opisthobranchia: Ascoglossa), was examined from April 1985 to June 1989. Along the central coast of Oregon, Placida consumed three host species: the low intertidal green algae Codium setchellii, C. fragile, and Bryopsis corticulans. Individual slugs...
Resource Type:: Dissertation
Full Text:: significance of my results. Mark Wilson broadened my perspective of plant ecology during a formative period

ScholarsArchive@OSU

Effects of different yield functions and initial inventory on harvest schedules for Douglas-fir

Germination and first-year survival of red alder seedlings in the central Coast Range of Oregon

Forest ant composition, relative abundances, and foraging following aerial spraying of carbaryl to suppress Western Spruce budworm

The SELCTV database : the susceptibility of arthropod natural enemies to agricultural pests to pesticides

A tutorial interface for a problem-solving production system

An analysis of risk management strategies for southern Alberta feedlots

Effects of irrigation frequency on yields of winter wheat

Effects of projected yields and initial inventories on harvest schedules of Douglas-fir

The utilization of Netarts Bay by juvenile chum salmon, 1984

Marine herbivore-plant interactions : the feeding ecology of the sea slug Placida dendritica

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