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The Foods And Feeding Habits Of Botulism Intoxicated And Healthy Waterbirds On The Bear River Refuge, Utah With Emphasis On The American Avocet And Blacknecked Stilt, George W. Wilson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Primary objectives of this study were: (1) to compare the food habits of healthy and botulism intoxicated American avocets and blacknecked stilts for qualitative and quantitative differences, (2) to determine which invertebrates found in the tracts of intoxicated and healthy birds contained type C toxin, and (3) to explain apparent susceptibilities among different sexes, ages and species of birds.

Based on percent utilization and occurrence of food items in the esophagus, the diets of healthy and intoxicated birds were similar. However, intoxicated avocets consumed higher proportions of Gastropoda and intoxicated stilts more Hydrophilidae larvae than did healthy birds. Because of …

Habitat Selection By Large Wild Ungulates And Some Aspects Of The Energy Flow In A Sub-Tropical African Savanna Woodland Ecosystem, Stanley M. Hirst

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A study of habitat selection by large wild ungulates was carried out on a 50 cm² area in the sub-tropical Lowveld region of eastern Transvaal province, South Africa. Estimations were made of herbaceous forage net productivity and ungulate secondary productivity on the same area.

Fourteen vegetation types, varying in composition and structure from open savanna to dense woodland, were delineated by association analysis. Structural and vegetational characteristics which were considered to influence ungulate distribution were measured within each vegetation type.

The study area supported resident populations of seven ungulate species during the wet season; drv season densities were higher …

Autecological Life History Studies Of Two Geraniums, Geranium Richardsonii And Geranium Nervosum, Becky Lee Green

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Two perennial species of wild geranium (Geranium nervosum Rydb. and G. richardsonii Fisch, and Trautv, [Geraniaceae]) which grow throughout the mountainous regions of western North America were studied to determine the factors influencing the life stage development and distribution of these plants. Attempts were also made to provide some information to assist in the taxonomy of this genus.

Geranium richardsonii is found in wet meadows and along streambanks throughout its distribution. Geranium nervosum frequents rocky hillsides and drier meadows throughout its range.

Seeds of G. nervosum had 65%, germination in the stratification pretreatment. Geranium richardsonii seeds required scarification to …

Effects Of Exercise On Serum Lactate Dehydrogenase Activity Of Catchable-Size Hatchery Rainbow Trout, Salmo Gairdneri, Gerlad T. Klar

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Effects of exercise and the relative condition of exercised fish were viii evaluated for two strains of rainbow trout. Circular tanks fitted with a paddle were used to continuously exercise the fish and a stamina tunnel was used to evaluate the condition of exercised trout. Trout were exercised continuously at one fish-length per second and one-half fish length per second. Serum LDH activity in Shephard-of-the-Hills (Missouri) rainbow trout acclimated to 10 C increased two fold during the first four days of exercise. Serum LDH activity returned to control levels by the tenth day of exercise. Serum LDH activity in Shephard-of-the-Hills …

Bromegrass Productivity In Relation To Precipitation, Shrub Canopy Cover And Soil Nitrogen Content, Lawrence G. Kline

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

In seasons of above normal precipitation, populations of annual weedy species increase in great abundance in semi-arid desert plant communities. These increases in biomass tie up a considerable portion of the available nitrogen of such ecosystems and may depress subsequent annual grass germination.

A big sagebrush-annual bromegrass plant community was irrigated to simulate a spring growth period of abundant precipitation amenable to annual bromegras s productivity. Productivity and nitrogen content parameters were monitored throughout the spring and summer to evaluate the short and potential long term effects of this seasonal increase in "precipitation".

Irrigation increased annual bromegrass productivity almost 50 …

A Seed Demography Model For Finding Optimal Strategies For Desert Annuals, J. Curtis Wilcott

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A theoretical investigation of the factors that affect the population dynamics of annual plants growing in deserts was conducted through the use of computer modeling techniques. A series of three models of the yearly life cycle of desert annuals was constructed and their behavior examined. The dissertation centers around the third and most complex model, a computer simulation model with distinguishable seed cohorts in a randomly varying rainfall environment. A typical simulation run was for 80 years and cost $1.00.

The five plant functions were (l} seed losses (mainly predation) as a function of seed age, (2) seed dormancy as …

A Comparison Of Consumer's Surplus And Monopoly Revenue Estimates Of Recreational Value For Two Utah Waterfowl Marshes, C. Holden Brink

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Demand curves were estimated for waterfowl hunting and nonconsumptive recreational use from use rate and variable expenditure data collected at the Bear River Migratory Bird Refuge and the Farmington Bay Waterfowl Management Area during fiscal 1969. Consumer's surplus and monopoly revenue estimates were then derived from the demand functions. Adjusted estimates of consumer's surplus for waterfowl hunting amounted to $7,260 per year at Bear River and $11,400 per year at Farmington Bay. For nonconsumptive recreation annual consumer's surplus was estimated to be $18,700 at Bear River and $3,760 at Farmington Bay. Monopoly revenue estimates were between one-half and one-fourth the …

A Measure Of The Amount Of Phosphate Adsorption And The Rate Of Release Of Indigenous Phosphate From A Desert Soil, Robert Lindsey Evans

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The capacity of a calcareous desert soil, Thiokol silt loam, to retain natural, as well as added, orthophosphate-P was measured by equilibrium adsorption employing a batch technique and evaluated using the two-slope Langmuir adsorption isotherm. From these data, corrected to account for indigenous soil P, a hypothesis was formulated as to the nature of retention of P by the soil, including the identification of two interfacial reactions involving P, and a value calculated for the adsorption maximum as defined by the Langmuir isotherm equation for P with soil at each of two soil depths and three constant temperatures within the …

The Effects Of Training Designed To Accelerate Piagetian Conservation In Children On Wisc Subtest Scores, Leland J. Winger Jr.

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this study was to test experimentally for generalization effects to certain WISC subtests from training designed to accelerate Piagetian conservation in children.

Forty-five subjects were randomly selected for participation in this study, which involved a pretest-posttest control group design. All subjects were pretested on a Conservation Test and on the Information, Arithmetic, Picture Arrangement, and Object Assembly subtests from the WISC. Subjects found to be conservers on the Conservation pretest were excluded from the study. Subjects from the experimental group found to be non-conservers on the Conservation pretest were taught conservation principles using sever al different tasks …

Prediction And Assessment Of Liked And Non-Liked Teachers As Rated By Various Student Groups, Nancy Ladee Fleming

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This study was designed to: (1) determine whether the test scores on the CPI and Teacher Inventory serve as predictors of "liked" and "non-liked" teachers, and (2) determine whether various student groups (minority, Anglo, disadvantaged and non-disadvantaged) rate "liked" and "non-liked" teachers differently on each of the three variables of the Teacher Inventory.

Ninety-two sophomore students, representing race and economic factors rated the 37 teachers of required sophomore subject matter classes on a Like-Dislike Scale and the Teacher Inventory. Two lists were thus generated: (1) teachers to whom various students rated as "liked" teachers, and (2) teachers to whom various …

The Effects Of Mobile Assisted Career Exploration On The Career Development Of Rural Ninth Grade Students, Robert Eldred Charlton

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The Problem. This study investigated whether or not a structured career development program, using a mobile guidance unit and operating on a limited time schedule, could provide a feasible means for facilitating the career development of ninth grade students in the rural school setting.

Project MACE. MACE stands for "Mobile Assisted Career Exploration." Project MACE was a study developed by the research office of the Utah State Board of Education and conducted by Utah State University. The study used ninth grade students in sixteen selected rural Utah high schools and in two rural …

Effects Of Manipulating Fr Size And Reinforcement Magnitude In Multiple Fr Schedules, Dean P. Inman

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Animals performing on simple fixed-ratio (FR) schedules typically pause after reinforcement delivery. The present study demonstrated systematic control of pause length in multiple fixed ratio schedules by manipulating FR size and reinforcement magnitude. In Experiment I, two adult male rabbits were stabilized on an alternating, two component, multiple FR 10 FR 10 schedule. Different colored lights were correlated with both FR components. Stability was determined and mean pause lengths were calculated as one FR component was increased in size until the schedule was FR 10 FR 50. Pausing was longer before the large FR component and was positively correlated with …

The Fixed-Interval Presentation Of A Small Fixed Ratio, Larry Allen Alferink

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

In mixed fixed-ratio schedules, reinforcement is delivered according to two or more fixed-ratio components, which may be programmed in simple alternation or according to a random sequence. If the components simply alternate, the behavior is similar to that obtained in a multiple schedule. Pauses are long before long fixed ratios and short before short fixed ratios. If a random sequence is used, responding is characterized by short pauses after reinforcement independent of the size of the ratio and primes occur at the beginning of many of the fixed ratios. The purpose of the present study was to investigate the possibility …

Increasing Resistance To The Negative Effects Of Set, Paul B. Chance

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Two experimental studies were reported in which attempts were made to increase resistance to the negative effects of set. Set interference was measured by performance on 1) a task in which a set was experimentally induced, 2) a series of problems presumed to involve implicit sets, and 3) a test of creativity presumed to involve implicit sets.

The experimental treatments consisted of tasks which required set-breaking. An important aspect of this research was that no hints or instructions concerning sets were provided.

The findings offer modest support for the view that learning experiences can be designed which will increase resistance …

The Local Interest As A Consideration In The Planning Of Highway Construction In The Canyonlands Region Of Southeastern Utah, Robert L. Barry

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

An examination was conducted of the potential of proposed highway construction for serving the needs and interests of the population of the Canyonlands Region of southeastern Utah. The history of the highway development issue in the region was first examined with special attention given to the local position on the issue as expressed by local government spokesmen. Next, the total system of development proposals for the region was divided into four sections using criteria of area served and degree of controversy. A map analysis was conducted to determine how these four separate proposals would serve transportation needs of the region. …

An Evaluation Of Land Use Planning Workshops Held In Utah During 1973, Andrew C. Germanow

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

During 1973 a series of land use planning workshops for local officials and interested citizens was held in the multi-county planning districts of the state of Utah. The workshops were based on a planning process which had been used in Wasatch County, Utah, to develop the Heber Valley Plan. The emphasis of this process and of the workshops was the involvement of the citizens of the community in the planning process and the use of natural resource information as an additional basis for making planning decisions.

The evaluation includes a description of significant results of the Heber Valley Plan, events …

Mesoscale Atmospheric Circulation And Diffusion Characteristics, Ronan I. Ellis

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Constant volume superpressure pillow balloons were flown over a mountain valley downwind from a sharp ridge line. Balloon trajectories revealed and atmospheric soundings confirmed a persistent turbulently mixed adiabatic layer over the valley at approximately ridge top height except in the immediate lee of the ridge where strong vertical motions were observed. Temporary stationarity of the relative mesoscale turbulence was found to exist on a time scale exceeding 4 hours. Power spectrum analysis of component relative velocities showed greater variance in lower wave numbers and anisotropy in mesoscale turbulence. Eddy diffusivity coefficients for turbulence above the ridge height were K …

An Intensive Edaphological Characterization Of The Soils Of Malambito Experimental Station And Its Implications In Future Agricultural Research, William L. Rubink

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Malambito Experiment Station, in the Atlántico III project area, Department of Atlántico, Colombia, had almost no quantitative edaphological data on which to base agricultural research. Unexplainably low general yields as well as problem areas of deficient plant growth only confounded the results of field plot experiments. Intensive soil sampling and subsequent measurements of pH, EC_e of the saturation extract, and the four major cations disproved the previous suggestions that the crop growth problems were related to saline, sodic, or degraded soil conditions. The Ca/Mg+K+Na ratio, although significant when correlated with plant height, was sufficient explanation for only a small …

A Relativistic One Pion Exchange Model Of Proton-Neutron Electron-Positron Pair Production, William A. Peterson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Proton-neutron electron-positron pair production cross sections are calculated in the framework of the pseudoscalar one-pion exchange model in a fully relativistic manner.

A computer program has been developed to evaluate invariants and Dirac traces for a given data point.

The sections for symmetric coplanar events for laboratory kinetic energies of 10 to 250 MeV were calculated for pair angles of 20° to 120°.

Frequency distributions were also calculated, at a laboratory energy of 200 MeV, using a random number generator to select data points. The frequency distributions are illustrated by curves.

It was noted that the inclusion of heavier bosons …

An Evaluation Of Stress Induced Mortality Of Stocked Catchable-Sized Rainbow Trout In Temple Fork Of The Logan River, Robert Earl Gresswell

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The level of stress imposed by population pressure, handling and live transportation on planted catchable-sized rainbow trout in a northern Utah stream was examined. Production of adrenocorticotrophin, as measured by interrenal ascorbic acid and serum cortisol levels, did not occur in transported or planted fish.

Dead or moribund fish collected from stream or live boxes comprised 13 percent of the 2,000 fish planted. Aeromonas salmonicida, the causative agent of furunculosis, was isolated from 41 percent of 106 moribund fish sampled. In addition, 39 percent of the samples exhibited bacterial growth other than A. salmonicida. Apparently, handling, transportation, and planting did …

Reproduction, Survival And Density Of Snowshoe Hares In Northeastern Utah, William R. Clark

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This paper presents information obtained from 1972 and 1973 on the reproduction, survival and density of snowshoe hares (Lepus americanus) in Cache National Forest, Utah. The main objectives of the study were: (1) to estimate population densities; (2) to measure adult and juvenile mortality ; and (3) to measure natality rates , including recruitment (realized annual natality).

Live-trapping and snaring were used to estimate population levels and to collect hares for necropsy. Fecal pellet counts were used to evaluate relative habitat use by hares.

The results of this study were compared to other studies of snowshoe hare ecology …

Spatial Impact Of Factor Payments: A Case Study Of Turkey Production And Processing In Utah, Chesley T. Blackham

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this paper is to examine the importance of the spatial origin of capital or investment funds and its influence on local community incomes within the context of agricultural production and processing in a rural area in Utah.

A careful identification of the sources of capital investment can be used to determine the spatial source and flow of returns from it, and, hence, provides some indication of the extent to which local community income could be expected to change with changes in the level and mix of factors employed locally.

Fish Production And Movements In The Lower Logan River, Utah, Eric P. Bergersen

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Following the abatement of domestic sewage pollution xii in the lower Logan River , the fish population was investigated in terms of abundance, growth, fecundity, production, mortality, age class structure, species diversity, distribution and movements during 1970 and 1971.

Three general groupings of fish were identified in the study area on the basis of species composition, abundance and distribution using a cluster analysis technique. These were located in 1) the tributary stream (7-Mile Creek) which previously transported sewage to the river and 2) above and 3) below 7-Mile Creek in the main stream of the Logan River. A "transition" population …

Economic And Agronomic Analysis Of Silage And Grain Corn Production In 15 Counties Of Utah 1972, Juan Zenteno

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This study estimated the 1972 costs and returns, and analyzed the physical response and economic relationships of corn hybrids for silage and grain production in some counties of Utah.

Average size of enterprise, land value and equipment value were estimated for silage and grain corn production in Utah.

Labor requirements for land preparation, growing and harvesting of silage and grain corn production were averaged. Net returns and costs (variable and fixed) for silage and grain corn production were computed in 30 farms of 15 counties of Utah to find the total production cost.

Yields, total cost, total revenue and economic …

State Expenditures In Utah: An Analysis Of Time-Series Models, William Darrell Lewis

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this paper was to determine the economic, sociopolitical, and other related factors which account for the variation in state expenditures across time. Utah was selected as the test state and data were collected from school records, political rosters, employment statistics, and a variety of federal government documents. Particular emphasis was placed on three areas: the cause-effect relationships between variables, relating the model to a body of economic theory, and demonstrating how the model may be applied in forecasting state expenditure needs.

Supply-and-demand analysis was the underlying economic theory. A simultaneous-equation model consisting of four equations--demand for state …

Achievement Of Students In Introductory Social Science Courses Offered By The College Of Humanities, Arts, And Social Sciences At Utah State University, James Collins Lewis

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The evaluation of student achievement in college has only recently become an important area of research. The main focus of this study was to determine the achievement of students in introductory social science courses offered by the College of Humanities, Arts, and Social Sciences at Utah State University. Several other variables were considered throughout the study including (1) the achievement of students in introductory courses offered by other colleges than the College of Humanities, Arts, and Social Sciences, (2) the effects of using standardized and teacher-made tests in measuring achievement, and (3) the achievement gain/loss of students tested two months …

Petrography And Geochemistry Of The Fish Haven Formation And Lower Part Of The Laketown Formation, Bear River Range, Utah, Brent H. Mecham

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Near Logan, Utah, the Fish Haven Formation is a thick-bedded, dark-gray dolostone. The Laketown Formation, which rests on the Fish Haven, is a less resistant, medium-gray dolostone. The Ordovician-Silurian boundary has been placed locally at the top of the Fish Haven by stratigraphers, and in the lower Laketown Formation by paleontologists.

Four sections of the Fish Haven and Laketown dolostones were measured near Logan, Utah. The samples from these four sections were examined using petrography, insoluble residue analyses, x- ray diffraction, quantitative and qualitative x-ray fluorescence spectroscopy, and statistical analysis.

Petrography appears to be the best lab technique for distinguishing …

A Study Of Faculty And Administrators' Perceptions Of The Factors Affecting Salary Increases At Utah State University, Izar Antonio Martinez

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this study was to determine if there were any differences in faculty members' and administrators' perceptions of those factors which should be influential and those factors which are actually accounted for in making decisions pertaining to salary increases at Utah State University.

The data for this study was collected from 55 administrators and 303 faculty members at Utah State University. A total of 21 factors, which were identified as being influential and/or determinants of faculty salary increases at Utah State University, were analyzed through the testing of four hypotheses using the chi square test for independence. The …

Teaching Critical Thinking Through Student Self Analysis Of Video Taped Seminar Discussions, James M. Miller

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The main objective of the Cedar High School (C.H.S.) study was to develop a curriculum that would be useful to the social studies educator interested in teaching critical thinking skills to high school students. The model for teaching critical thinking that was followed during the C.H.S. study included three requirements. The first was to identify those critical thinking skills that would be useful to students during discussion of controversial issues. The second requirement of the critical thinking model was to teach these context specific critical thinking skills to students. This requirement was met by using a variety of materials, including …

A Hydrologic Model Of The Provo River Basin, Utah, Craig T. Jones

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this paper is to develop a general hydrologic model for use on a digital computer and prove its validity by applying it to a management study of the Provo River Basin. Hydrologic equations have been proposed for each major hydrologic occurrence within a river basin. By linking these equations through restrictions on continuity of mass, a general hydrologic model can be obtained. Such a model becomes the basic tool for studying the management of the river basin hydrology. The paper describes the model components, parameter identification program, and the river basin management program.