Physical Sciences and Mathematics Commons^™

An Evaluation Of The Fishery Resources Of The Thames River Watershed, Connecticut, Connecticut Department Of Environmental Protection

Storrs Agricultural Experiment Station

No abstract provided.

Respiratory Metabolism And Energy Requirements Of Embryo, Larval And Juvenile Mountain Whitefish, Prosopium Williamsoni, Pokkavil Karunakara Rajagopal

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The upper optimum temperature for embryonic development of mountain whitefish is 6 C, and for the post yolk sac stage is 9 to 12 C. The need to know effects on all stages in the life cycle in cases of thermal pollution is demonstrated. Abnormalities caused by thermal pollution in hatched larvae were agape jaws, coloboma or fissure of the eye, monophthalmia or the presence of only one eye, monomicrophthalmia or the presence of one small eye and one case of twinning. High mortalities of eggs occurred at 9 C and higher.

Study of the energy expenditure, by the dry …

Nutritional Quality And Herbage Production Of Intermediate Wheatgrass (Agropyron Intermedium [Host] Beauv.) When Infested With Black Grass Bugs (Labops Hesperius Uhler), Alan M. Gray

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Two intermediate wheatgrass seedings with different levels of grass bug infestation were evaluated for herbage production, seedhead production, percent dry matter, crude protein, and cell contents. Study sites were located at different elevations on mountain summer ranges in northern (Site I) and central (Site II) Utah. Study plots at Site I and Site II were infested with 113 and 210 bugs per sweep, respectively. Herbage production appeared to be reduced in early spring on the site with the higher infestation; however, no effect on season-long herbage production could be detected on either site. Seedhead production on infested plots was reduced …

The Influence Of Roots On The Accuracy Of Soil-Moisture Measurements Taken With A Neutron Moisture Meter, Terry L. Andreessen

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The effects of roots on soil-moisture measurements taken with a neutron probe were studied. These effects were observed under three different soil-moisture conditions, with different sized roots, and with varying distances between the access tube and root. The moisture conditions used were air dry, field capacity, and saturated.

Large roots can greatly affect neutron soil-moisture measurements when the access hole is drilled through the root. Positive errors as large as 52 percent were found when the soil moisture was at field capacity. With dry and saturated conditions positive errors of 43 percent and 38 percent respectively, were found.

In most …

Heat And Moisture Conduction In Unsaturated Soils, J. A. Havens, R. E. Babcock

Technical Reports

Mathematical models are developed for the prediction of heat transfer from hot water pipes buried in the soil. Heat transfer in the absence of moisture transfer is described as a function of the difference between the temperature of the pipe and the temperature of the soil surface. The energy balance is used to determine the longitudinal temperature distribution of the water. The method is extended to describe a system of equally spaced, parallel buried pipes. Soil temperature profiles around the pipes are presented. The model is used to calculate the land area that can be heated by an underground piping …

Evaluation Of Recovery In A Polluted Creek After Installation Of New Sewage Treatment Procedures, Robert A. Kuehne

KWRRI Research Reports

Response of Hickman Creek near Lexington, Kentucky to alleviation from serious sewage pollution was studied from January, 1973 through July, 1974. Wastes are now handled from an efficient secondary treatment facility and four sequential polishing lagoons before chlorination and discharge to West Hickman branch.

Physico-chemical tests gave no strong indication of residual pollution effects at the start of the study, approximately six months after the treatment facility opened. At low flow a slight oxygen sag, probably associated with algal growth in the lagoons, persists downstream from the outfall. Mean values for turbidity, nitrates and COD are somewhat higher at the …

Microfossils From The Big Springs Limestone (Pennsylvanian) In Nebraska, Robert F. Diffendal Jr.

School of Natural Resources: Faculty Publications

Sand-sized residues from partial acetic acid digestion of three samples of the Big Springs Limestone Member of the Lecompton Limestone (Pennsylvanian) from two localities in Cass County, Nebraska, have yielded sixteen genera of microfossils from five major groups of organisms and numerous other whole and partial fossils from seven other groups not identified to the genus level. These fossils include: Protozoa (fusulinids*); Porifera (one spicule type); Bryozoa (two undetermined genera); Brachiopoda (fragments); Gastropoda (two undetermined forms); Ostracoda (Bairdia*, Hollinella*, Moorites*, and one undetermined genus); Crinoidea (whole and partial ossicles*); Echinoidea (whole and partial spines and spine bases*); Holothuroidea (Achistrum …

Seasonal And Spatial Variation In Primary Productivity In Boulder Basin, Lake Mead, Clark County, Nevada, Isamu Aoki

Publications (WR)

The ¹⁴C light and dark bottle technique for measurement of primary production was utilized as a means of assessing the amount of inorganic carbon being converted Into organic form by the photosynthesis of phytoplankton populations In the Boulder Basin of Lake Mead.

Spatial and time series changes of productivity levels observed at eight sampling locations within Boulder Basin Indicate that the Influence of treated municipal arts' industrial effluent flowing into Les Vegas Bay is contributing high levels of available nutrients at Las Vegas Wash Inlet to cause productivity to approximate those levels associated with polluted waters.

Productivity levels at …

Exploratory Sensitivity Analysis Of A Stream Ecosystem Model, Joseph H. Wlosinski

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The framework of a stream ecosystem simulation model is described. Using this framework and data from two different geographical areas, a cold desert stream and a generalized mountain stream, exploratory sensitivity analysis was performed on the model. This was accomplished by qualitatively comparing outputs of a series of simulations in which a different level of a driving variable was used in each simulation. Based on these results, recommendations are made for improving the structure of the model.

Factors Influencing Germination And Seedling Survival Of Several Varieties Of Astragalus Lentiginosus Dougl., Paul Ziemkiewicz

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Astragalus lentiginosus, which consists of 36 varieties, is one of the principal locoweeds of western North America. The objectives of this study included identification of some of the major factors affecting germination of the seed and survival of the newly established seedlings for several of these varieties.

The seeds of the varieties studied exhibited two mechanisms for dormancy. One is a seed coat that is impermeable to water, and the other is a water-leachable inhibitor. The presence or absence of low-intensity incandescent light (in 14-hour day lengths) had no effect on germination. Of three temperature regimes studied, the regime …

Gas Exchange And Water Relations Of Two Alpine And Two Arctic Tundra Plant Species, Douglas Allan Johnson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Although water stress is an important selective force in many environments, it is not commonly considered to be of particular importance in tundra areas. Even though large portions of tundra may have an abundance of water, other more exposed areas may become quite dry. This microsite variability with respect to moisture stress was reflected in soil water potential measurements obtained from an alpine tundra area on Niwot Ridge in Colorado. Even though soil water potentials were consistently above -5 bars in a relatively low lying Deschampsia meadow, soil water potentials from an exposed fellfield area were often as low as …

Water Quality Impact Of Burning And Grazing On A Chained Pinyon-Juniper Site In Southeastern Utah, John C. Buckhouse

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

During 1973 and 1974 a water quality study was conducted in San Juan County, southeastern Utah. In 1973, baseline water quality data was collected from study locations which had been chained to remove pinyon-juniper vegetation six years earlier. The area had been chained under two different techniques: (1) doubled chained, with debris-left-in-place and (2) chained, with debris windrowed. An "undisturbed, natural" woodland was left between these two treatments in order to serve as a control area.

In the fall of 1973 and spring of 1974 secondary treatments of burning and grazing were superimposed upon the debris-in-place and windrowed sites, respectively. …

Yorktown Power Station Ecological Study, Phase Ii : Final Technical Report, R. A. Jordan, R. W. Virnstein, J. E. Illowsky, J. Colvocoresses

Reports

No abstract provided.

Modeling Ephemeral Stream Channel Development In A Semiarid Upland Environment, William Kaufman Hodges

Geography ETDs

The ephemeral stream channel is a particularly obvious and distinctive hydrologic feature of the American Southwest. This is notably true of northwestern New Mexico and northeastern Arizona where a semiarid upland environment, characterized by relatively flat-lying or gently warped sedimentary rocks, has been subjected to the development of can­yons and basins with moderate to deep alluvial fills. This area provides an ideal setting for a geomorphological phenomenon known as "valley trenching."

Maritime Environment: A Systems Approach, Peter A. Roche

Marine Affairs Theses and Major Papers

Some maritime activities may be independent of each other but most are in competition and some are supportive in one way or other with most other maritime activities. Fisheries and merchant vessels rarely are at odds over matters of ocean traffic. However, both those activities may object to obstructions related to offshore oil drilling. Both municipalities and fisheries complain of merchant vessel pollution. Companies of different, states compete for offshoreoil lease rights. On the other hand, synergy and sublimation sometimes result from interworkings of maritime activities. Complexes of offshore platforms increase fish congregations. Powerplant cooling ponds transmute thermal pollution into …

The Deepwater Port Act Of 1974, James C. Moses

Marine Affairs Theses and Major Papers

During the past two years of the 93rd Congress, no less than eleven different bills were introduced to deal with the various aspects of deep-water port development. Much has been made of the supposition that with energy conservation, higher petroleum prices, import quotas and all the other gas-saving ideas in vogue, deepwater ports have become an anachronism of pre-energy crisis days, the days of world-scale 400 in tankers and dreams of million-ton ULCC's. The truth of the matter is that we shall still, for an indeterminate period, require imported oil, by the dictum of economics, it will come via the …

Marine Orientation In The Republic Of South Africa, D. A. Bonvouloir

Marine Affairs Theses and Major Papers

Discusses marine orientation in The Republic of South Africa through the following topics; inputs (geography, population, fisheries); input processing (governmental structure, economic development, maritime utilization); decision making processes (Value System as Filter); marine-related decisions (pollution, shipbuilding); and outputs (treaties and agreements, domestic status, conflicts).

Water Current, Volume 7, No. 4, April 1975

Water Current Newsletter

Why Plan for Water and Land Resource Management?
Duane Acker to Head Kansas State
Nebraska Water Quality Report
Funds Requested for MRBC Yellowstone Study
Agreement Reached on Water Marketing
Old West Governors Challenge Corps Power
Water Crisis Predicted
EPA Drinking Water Survey Shows Possible Carcinogens
Water Resources Scientific Information Center
National Drinking Water Advisory Council Named
Pollution Tax Urged
Research Review: Biological Control of Blue-Green Algae

A Joint Action Model For Semi-Enclosed Seas: A First Cut, Arthur W. Tate Jr.

Marine Affairs Theses and Major Papers

Dr. Lewis Alexander of the University of Rhode Island authored a most informative and incisive paper concerning the relationship of regionalism and the Law of the Sea. In this paper Alexander focused on the special case of the semi-enclosed sea and suggested that the potential for joint action of nations surrounding these seas is worthy of special interest and study. Even a cursory review of a geographic atlas reveals that the 25 seas under consideration constitute rather definitive, logical, potential regions. Nations bordering a particular semi-enclosed sea assume at least one commonality immediately-the bordered sea. Such commonality theoretically infers that …

Sodium, Potassium, Calcium And Magnesium Content Of Northwest Arkansas Rain Water In 1974, G. H. Wagner

Technical Reports

No abstract provided.

The Effects Of Sewage Pollution Abatement On Environmental Quality In Hillsborough Bay, Florida, Joseph J. Simon, Wen H. Huang

Reports

Owing to the construction of a large municipal advanced (tertiary) waste water treatment (AWT) plant, a unique opportunity exists to study the side effects of removal of a major point source of pollution on the estuarine environment of Hillsborough Bay. The data is still in more or less raw form, with little analyses or interpretation attempted to date.

Water Current, Volume 7, No. 3, March 1975

Water Current Newsletter

From the Desk of the Director
Search for NWRRI Director Proceeding
New Address for Former NWRRI Director
Institute Publications
1975 Nebraska Water Conference Review
Underground Water Pumping Bill to Legislature
Environmental Specialist Joins MRBC Planning Staff
FY 1976 Proposed Water Budgets
Water Resources Council Begins Study on Cost Sharing
FEA Projects Rail and Barge Shortages for Coal Transport
Research Review: Biophysical Control of Water Loss
Butcher Named Water Research Director

Enewetak (Eniwetok) Atoll- Aspects Of Nitrogen Cycle On A Coral Reef, K. L. Webb, William D. Dupaul, W. Wiebe, W. Sottile, R. E. Johannes

VIMS Articles

No abstract provided.

The Prairie Naturalist Volume 7, No.1. March 1975

The Prairie Naturalist

MIGRATION OF BIRDS IN NORTH DAKOTA DURING FAll 1974 ▪ J. T. Lokemoen & D. H. Johnson.

REPRODUCTION AND DEVELOPMENT OF FOUR MALLARD LINES ▪ R. J. Greenwood

Final Report: Buffalo National River Ecosystems, R. E. Babcock, H. C. Macdonald, D. G. Parker, Joe F. Nix, Kenneth F. Steele, Richard L. Meyer, R. W. Raible, D. A. Becker, R. V. Kilambi, E. H. Schmitz

Technical Reports

The objective of this study was to sample the Buffalo River on a seasonal basis for a year, in order to determine whether any potential water quality problems existed.

Water Current, Volume 7, No. 2, February 1975

Water Current Newsletter

From the Desk of the Director
Institute Director Resigns
Search for NWRRI Director Underway
NWRRI Research Seminar
Institute Publications
MRBC Water Resources Priorities Set
Safe Drinking Water Bill Signed
Graduate Study in Water Resources
Research Review: Investigation of Laser Ramen Spectroscopy for Analysis of Water Quality

Environmental Impact Report Redwood Creek Logging, Susie Van Kirk

Susie Van Kirk Papers

Historic Survey of the Redwood Creek, with some focus on the Chilula people (date range: 1850s-1890s).

Distribution Of Copper And Zinc In Oysters And Sediments From Three Coastal-Plain Estuaries., R. J. Huggett, F. A. Cross, M. E. Bender

VIMS Books and Book Chapters

Copper and zinc were analyzed in oysters (Crassostrea virginica) from the Newport River estuary, North Carolina, and the Rappahannock River estuary, Virginia. Results indicated that a concentration gradient existed, higher concentrations of metals being found in animals living in fresher waters as was shown previously for oysters in the James, York, and Rappahannock estuaries in Virginia. Absorbed, precipitatcd-coprecipitated, and organic fractions of copper and zinc in the <63-μm portion of the sediments from the Rappahannock and York rivers and estuaries were estimated from collections made in January 1972 and June 1973. These sediment data are discussed for both estuarine systems and are compared with metal concentrations in oysters. These comparisons indicated that the concentration gradient found in oysters does not appear to be related to the distribution of copper and zinc in the sediments. Alternative explanations for the inverse relationships between concentrations of copper and zinc in oysters and salinity arc given.

Water Current, Volume 7, No. 1, January 1975

Water Current Newsletter

From the Desk of the Director
Conference Held on Research in Action
NWRRI Research Seminar
Nebraska First in NPDES Program
Resignations and Retirements from OWRT
Future Water Crisis Noted
Horton Outlines Federal Water Policy
Research Review: Seasonsal Water Use of Irrigated Pasture Grasses Under Permanent-Set Irrigation as Related to Climatic Factors

Hydroelectric Power Potential At Corps Of Engineers Projects : A Report, Ralph L. Trisko, United States. Army., Institiute For Water Resources

Dickey-Lincoln School Lakes Project

This report completes phase one of the study. It is intended to fill the need, recognized at the outset, for a broad framework within which subsequent more detailed study at the project level might take place. It is an overview of physical hydropower potential in the context of energy and water resources and demands, energy economics, and federal policy, organization, and practices pertaining to hydropower development and marketing.