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Bulletin No. 19: Inland Wetland Plants Of Connecticut, William A. Niering, Richard H. Goodwin

Bulletins

24 pp. 1973. Some 40 species of plants found in marshes, swamps and bogs are illustrated.

Predicting Nitrogen Transformations And Ammonia Volatilization In Warm Desert Soils, G. R. Dutt

Memorandum

No abstract provided.

Effects Of Tubal Ligation And Salpingectomy On Pregnancy, Ottis Murphy Lane

Morehead State Theses and Dissertations

A thesis presented to the faculty of the School of Sciences and Mathematics at Morehead State University in partial fulfillment of the requirements for the Degree of Master of Science in Biology by Ottis Murphy Lane May 1, 1973.

Nitrogen And Carbon Flux In A Soil-Vegetation Complex In The Desert Biome, D. B. Porcella, J. E. Fletcher, D. L. Sorensen, G. C. Pidge, A. Dogan

Memorandum

No abstract provided.

A Linear Programming Decision Model For Elk And Deer Management On The Logan Peak Winter Range Area, Ronald P. Grove

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

One consequence of our surging human population is the corresponding increased level of resource consumption. This occurrence renders it imperative that resource managers intensify their management of the world's natural resources. Failure to improve management techniques involving the use of these resources will result in premature depletion of non-renewable commodities and severe checks on the vigor of renewable resources.

Management is faced with the difficult task of searching for astute means of allocating natural resources. Because of the tremendous size and complexity of the natural world, the problem can be extremely complicated.

Mathematical techniques have proved useful in providing natural …

A Phytosociological Study Of A Relict Hardwood Forest In Barren County, Kentucky, Christine Bougher

Masters Theses & Specialist Projects

Although general information is readily available concerning the structure and composition of deciduous forests, especially in the eastern part of the United States, there seems to be little specific information concerning forest composition in the Commonwealth of Kentucky. The lack of phytosociological studies prior to the development of the land, and the extent of land development in Kentucky, has led to a paucity of information regarding the natural forest vegetation of the Commonwealth. To the author's knowledge, there are few publications dealing with the vegetational composition of relict or virgin forests in Kentucky. It is apparent that there is a …

Kentucky Warbler (Vol. 49, No. 2), Kentucky Library Research Collections

The Kentucky Warbler

No abstract provided.

Soil As A Factor In Modelling The Phosphorus Cycle In The Desert Ecosystem, J. J. Jurinak, R. A. Griffin

Memorandum

No abstract provided.

Gaseous Losses Of Nitrogen From The Soil Of Semi-Arid Regions, T. C. Tucker, R. L. Westerman

Memorandum

No abstract provided.

Seed Reserves Of Desert Soils, Stuart Childs, David W. Goodall

Memorandum

No abstract provided.

Distillation-Condensation Of Water And Nutrient Movement In A Desert Ecosystem, N. Stark

Memorandum

No abstract provided.

Decomposition And Mineralization In An Artemisia Tridentata Community In Northern Nevada, P. L. Comanor, D. C. Prusso

Memorandum

No abstract provided.

Proteolytic Activity Of Soil Microorganisms, Robert T. O'Brien

Memorandum

No abstract provided.

The Food Habits And Feeding Behavior Of New World Coral Snakes, Harry Walter Greene

Biology Theses - Archive

This thesis considers the food habits and feeding behavior of New World venomous coral snakes, with emphasis on Micrurus fulvius a species that is found in the southeastern United States and northern Mexico. Literature records and the stomach contents of preserved specimens demonstrate that M. fuIvius of all sizes are specialized tertiary consumers. In Texas, they feed mostly on several species of small, secretive colubrid snakes and on skinks of the genera Eumeces and Leiolopisma. Other kinds of lizards and the young of large colubrid and viperid snakes make up the remainder of their prey. Geographic and seasonal variations in …

Internal Water Potential Of An Engelmann Spruce Stand In Relation To Soil And Atmospheric Factors, Richard L. Meyn

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The primary objective of this study was to determine the degree of correlation between internal water potential of Engelmann spruce trees and selected environmental factors. The secondary objective of the study was to determine the effect of summer precipitation, both in meadow and forested sites, on the soil drying cycle.

Four study plots (each roughly 154 square meters) under spruce cover and two study plots (100 square meters) in a small meadow were established. At each spruce plot, a thermocouple psychrometer was installed at one meter above the ground on the north side of three selected, mature Engelmann spruce trees. …

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 …

Modification Of Ontogenic Expression Due To Relocation Of The Ry+ Gene In Drosophila Melanogaster, Allen A. Badgett Jr.

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The ry⁺ gene of Drosophila melanogaster and its associated enzyme, xanthine dehydrogenase, were employed in an analysis of the relationship between regulation and the location of a gene in the genome. Enzyme assays as an indication of gene activity were performed on genotypes containing zero, one and two doses of ry⁺ genes. Xanthine dehydrogenase activity of rosy genes in normal and relocated positions was determined during development.

The results indicate: 1) the gene ry⁺ is differentially active during ontogeny; 2) the activity during ontogeny is proportional to the number of ry⁺ genes present in the genome; …

Control Of Rat Testicular Monoamine Oxidase Activity: Age, Seasonality, Melatonin, Hcg, Fsh, Starvation And Irradiation, Ronald Lee Urry

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A number of investigations were undertaken to determine what factors control testicular MAO activity. Activity was high in neonatal rats (19 g - body weight), showed a reduced activity at 53 g, was increased at 145-235 g and showed a progressively reduced activity at 415 g, 482 g and 650 g. Hypophysectomy of immature male rats at 3 weeks of age, or mature rats at 10 weeks of age, significantly reduced testicular weight and total MAO activity as calculated on a per animal basis. The specific activity of the enzyme, as expressed on a per mg of tissue basis, was …

Temperature Effect On Leaf Water Potential Measurements, Rex J. Prosser

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Silver foil psychrometers were used to monitor water potential in different portions of maize leaves which were subjected to temperature gradients. The psychrometers were preliminarily calibrated over standard NaCI solutions at temperatures ranging from 5°C to 45°C in an aluminum plate apparatus designed to provide uniform temperatures within each psychrometer even while overall temperature was changing. Based on the calibrations, empirical temperature correction equations were derived and used to correct psychrometer readings at different temperatures to equivalent values at 25°C. Temperatures on a single maize leaf were varied by placing the long leaf through an insulated box with several compartments …

Morphological And Ecological Relationships Of Etheostoma Caeruleum And Etheostoma Spectabile In West Central Indiana, Dennis E. Clark

All-Inclusive List of Electronic Theses and Dissertations

Etheostoma caeruleum Storer and Jii. spectabile (Agassiz) are closely related members of the family Percidae, subfamily Percinae, tribe Etheostomatinae. This group, consisting mostly of small, brilliantly colored darters, has been partially characterized by Collett ( 1963). Several papers have been published dealing with the biology of these two species. One or both species have been described by Storer (1845), Agassiz (1854), Reeves (1907, but see Trautman, 1930), Trautman (1930, 1957) Knapp (unpublished Ph.D. dissertation), Distler (1968), and others. Trautman (1930, 1957) Gerking (1945), and Hubbs and Lagler (1947) reported that h caeruleum lives in larger and faster streams, whereas JL_ …

Reproductive Biology Of The Band-Tailed Pigeon (Columba Fasciata), Ralph J. GutiéRrez

Biology ETDs

The reproductive biology of the Band-tailed Pigeon (Columba fasciata) was studied from May through September during 1969-1972 in Colorado and during 1972 in New Mexico. Gonads, body weight, percent body fat, and crop activity from 619 male and female pigeons were used in the analyses of gonadal cycles of wild birds. Photoperiodic responses were studied experimentally during 1972-1973 to help explain the unusual reproductive patterns in this bird. The breeding season extends from May through August and two nesting attempts probably occur during this period. This pigeon normally lays one egg per clutch, but up to eight per cent of …

Behavioral Character Displacement: Evidence Of Food Limitation In Insectivorous Bats, Sandra Lynn Husar

Biology ETDs

An earlier study of the food habits of bats of New Mexico (Black, 1972) indicated that Myotis auriculus and Myotis evotis, while extremely similar in morphology, differ in food preferences in the tested area of sympatry, M. auriculus relying heavily on moths, while M. evotis preys largely upon beetles. The resulting question was: Does this difference persist in areas of allopatry, indicating that each species has evolved as a food specialist, or does each species, in the absence of its close competitor, eat both moths and beetles without a strong preference?

If the latter were true, it would suggest that …

Bacteriological Studies Of The Albuquerque Sewage Treatment Plant Effluents, Francisco Medina

Biology ETDs

In order to evaluate the efficiency of Albuquerque sewage treatment plants no. 1 and no. 2 and to determine the amount of enteric bacterial pollution their effluents contribute to the Rio Grande, at­tempts were made to isolate fecal coliform, fecal streptococcus, and Salmonella species from effluent samples between 1000 hr and 1500 hr over a 12-month period.

Membrane filter techniques were used to isolate and count fecal coliforms and fecal streptococcus, and tetrathionate broth followed by brilliant green agar was used to isolate Salmonella organisms.

Plant no. 1 is a heavy contributor of enteric organisms between 1000 hr and 1500 …

Cottonwood Recovers From Deer Browsing, R. M. Krinard

Aspen Bibliography

No abstract provided.

Changes In The (Na+ K+) - Dependent Atpase Activity In Gills Of The Euryhaline Teleost, Fundulus Heteroclitus, Upon Adaptation To Freshwater And Salt Water As Determined By Specific Activities And 3h - Ouabain Binding Sites, Mary Elizabeth Gilman

Master's Theses

Previous attempts to measure the (Na⁺+K⁺) - dependent ATPase in gills of euryhaline teleosts have yielded controversial results. In this study both the (Na⁺+K⁺) - dependent ATPase activity and the number of JH - ouabain binding sites, representing the number of ATPase molecules, were measured in gill tissue preparations of the killifish, Fundulus heteroclitus. The (Na⁺+K⁺) dependent ATPase activity and ouabain binding sites were greater in gills of fish fully adapted to freshwater than in those adapted to salinities of 17 ppt or 24 ppt. On the other …

Predicting Primary Productivity In Westhampton Lake, Richmond, Virginia., Gary Newton Moore

Master's Theses

Several predictive photosynthetic models were tested using light, temperature, nutrient, chlorophyll, and primary productivity data collected from Westhampton Lake, Richmond, Virginia from February-September, 1972. A simple linear model, the Kendall rank correlation coefficient, was used to relate photosynthesis to individual meteorological, physical, chemical, and biological factors. iii Of the parameters measured, only the daily maximum photosynthetic efficiency ((P/chl) max ) was significantly correlated with photosynthesis. Five multiple factor (non-linear) models were tested. In the best fitting model, primary productivity was a function of the maximum observed ratio of photosynthesis/chlorophyll concentration, light intensity, temperature, nutrient concentrations, and chlorophyll concentration. The Pearson …

Effects Of Temperature And Ph On The Growth And Composition Of The Sporophyte And Gametophyte Generations Of Allomyces Arbusculus Butler (1911), Lawrence Wayne Lenz

Master's Theses

Pure cultures of the sporophyte and gametophyte generations of Allomyces arbusculus Butler (1911) were grown under varied conditions of temperature and pH. On solid media the gametophyte did not grow at 10 and 15 C; the sporophyte began slow growth after a long lag period at 15 C. There were no significant differences in growth between the sporophyte and gametophyte at 20 and 25 C. Increasing colony areas occurred for both generations at temperatures between 30 and 40 C, with the largest amount of growth for either generation at 35 C.

Colonies grown in broth media at various pH levels …

An Approach To Range Inventory For The Annual Range Type Of The Arid And Semi-Arid Regions Of The Sudan, Farid D. Iskander

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

Range inventory, by definition, is the evaluation of the range resources to determine a proper and safe level of stocking and to provide a record of vegetation and vegetation changes (Stoddart and Smith, 1955). Range survey is defined by the Range Conservation Glossary, Soil Conservation Service (1944) as "a systematic and comprehensive inventory and analysis of the range resources and related management problems of a range area for the purpose of developing plans of management therefrom." Accordingly, range inventory is the quest for basic information about rangelands and the development of guides and procedures for their management, improvement and efficient …

Nutritional Anemias In Selected Countries, Wun-Yuan Mei

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

Blood is a constantly changing, highly complex tissue which is concerned with the transport of cell nutrients, the elimination of wastes, and the maintenance of chemical equilibrium. The mature red blood cell takes about seven and half days to develop, then has a life cycle of 120 days. Many factors are involved in this complicated process. Many nutrients are required for the frame-work of the red blood cells and in the hemoglobin within these cells.

Anemia is a condition in which there is a reduction in the total circulating hemoglobin. Anemias may be described biochemically in terms of lowered hemoglobin …

Absorption, Translocation And Metabolism Of 1,3-Dichloropropene In Selected Plants, David L. Berry

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The absorption, translocation and metabolism of 1,3-dichloropropene (a soil fumigant) in bush beans, tomato and carrot was studied under growth chamber and greenhouse conditions using solution culture, vermiculite and sand. Absorption was monitored using gas chromatographic analysis and isotope techniques. Plants were shown to absorb a maximum amount of dichloropropene by 24 to 48 hr from solution culture and vermiculite. The plant absorbed and translocated 1,3-dichlorpropene-¹⁴C-U readily to aerial parts of the plant.

Bush beans, tomatoes and carrots absorbed and translocated 3-chlorallyl alcohol-¹⁴C-U from solution culture and vermiculite. Levels of 3-chloroallyl alcohol reached maximum at 24 …