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A Technique For Predicting The Aquatic Ecosystem Response To Weather Modification, Eugene K. Israelsen, David R. Bernard, Thomas M. Twedt, Henry M. Runke

Reports

In the past, considerable effort has been spent on the development of techniques for increasing precipitation from a given cloud formation. However, little attention has been given to identifying and evaluating the impacts of cloud seeing activities on the aquatic ecosystems within the affected areas. The objective of this study was to apply the simulation technique to predict the impacts of cloud seeing on the aquatic ecosystem within the area subject to weather modification. A small mountain watershed near Logan, Utah, was selected for the study. Measurements were made of the significant parameter levels under current conditions. A hydrologic and …

Biological Inventory In Conjunction With The Las Vegas Wash Unit, Colorado River Basin Salinity Control Act Title Ii (P.L. 93-320), W. Glen Bradley, J. Scott Miller

Publications (WR)

The present report is a biological inventory in conjunction with the Las Vegas Wash Unit, Colorado River Basin Salinity Control Act, Title II. The boundaries of the project encompass sections of North Las Vegas, Las Vegas, East Las Vegas and areas along Las Vegas Wash extending to its drainage point in Las Vegas Bay in Lake Mead. Therefore, it encompasses a wide array of ecological situations and landscapes ranging from essentially natural to various stages of urban development. This biological inventory presents basic ecological classifications, descriptions of vegetation, lists of vascular plants and vertebrates known to occur in the area. …

The Prairie Naturalist Volume 6, Nos. 3 And 4. September-December 1974

The Prairie Naturalist

A BIOLOGICAL SURVEY OF KRAFT SLOUGH ▪ G. L. Krapu & H. F. Duebbert

CHRISTMAS BIRD·COUNTS FOR NORTH DAKOTA - 1974 ▪ R. N. Randall

USE OF SMALL FENCES TO PROTECT GROUND BIRD NESTS FROM MAMMALIAN PREDATORS ▪ A. B. Sargeant & A. D. Kruse

BOOK REVIEW: Finding Birds in Minnesota ▪ E. M. Welter

Development And Preliminary Application Of Mathematical Models To The Weber Basin, W. J. Grenney, D. S. Bowles, M. D. Chambers, J. P. Riley

Reports

The adoption of stream standards, whether for direct application or for the establishment of realistic effluent standards, creates a need to predict the impact of pollution loads on river water quality during critical flow periods or as the result of future user demands. Because of the complexity of aquatic systems, mathematical models are an excellent medium for bringing together the state-of-the-art knowledge from a variety of disciplines into a form which can be readily applied to practical problems. Applying a mathematical model to a river system has the added advantage of providing a structure for the systematic consideration of the …

Water Current, Volume 6, No. 11, November 1974

Water Current Newsletter

Guest Editorial: Earl R. Kendle, Chief, Research Division, Nebraska Game and Parks Commission
Deadline for Research Proposals
NWRRI Hires Research Associate
Underground Water Supplies Remain the Same
Greater Priority Urged for Platte Level B Study
Coming Crisis -- Water Shortage?
EPA Orders Study of Nation's Drinking Water
Water Resources Council to Conduct Project Cost Sharing Study
Corps of Engineers Reviewing Project Deauthorization
Methods for Cleaner Irrigation Runoff
Water Proponents Defend Water Resource Spending
Expo '74 "Tote Board" or Resource Use
ERTS Can Locate Energy Resources and Protect Environment
Research Review: Water Quality Study of Runoff from Agricultural Lands

Press Reports, Walter A. Lawrance

Walter Lawrance Papers

No abstract provided.

Water Current, Volume 6, No. 10, October 1974

Water Current Newsletter

From the Desk of the Director
Thanks Don for a Job Well Done
Deadline for Research Proposals
NWRRI Hosts Research in Action Conference
Learn About Nebraska's Water Quality
NWRRI Advisory Committee Meets
Director Lectures at Maine
Hydrologist Position Available
Forestry Chairman Sought
Wise Water Use Advocated
MRBC Director Sees Adequate Water for Planned Development
MRBC Committee on Energy and Environment
Energy Research and Development Adminstration Established
EPA Reports on Future Wastewater Treatment Plant Needs
New Criteria for EPA Grants
"Second America" Needs Discussed by USGS
Research Review: Disposal of Cattle Feedlot Runoff on Agricultural Land

Water Current, Volume 6, No. 9, September 1974

Water Current Newsletter

From the Desk of the Director
Deadlines for Research Proposals
NWRRI Hosts Research in Action Conference
Opening: River Basin Planner
Hal Schroeder Speaks at ICE/WRC Conference
$1.6 Billion for Nebraska Sewage Needs
FY 1975 Title II Projects Announced
Discount Rate for Water Resources Projects Increases
Water Gun: Toy or Tool?
EPA Administrator Comments on Chlorine
Completed Water Projects Ignored
Senator Defends Current Water Policies
Rail-Barge System May Join Hands
Urban Water Pollution
New General Counsel of WRC
Research Review: Recharge Simulation Model

Metabolic Capabilities Of Sulfur Oxidizing Bacteria And Their Role In Water Pollution, M. I. H. Aleem

KWRRI Research Reports

This report describes investigations into the physiology of microorganisms that are commonly involved in the oxidation of inorganic sulfur compounds. The metabolic activities of these bacteria play a potent role in several fields of economic importance such as strip mining operations, water pollution, corrosion, metallurgy, petroleum technology and soil fertility processes.

The oxidation of inorganic sulfur compounds was studied in the chemolithotrophs Thiobacillus denitrificans, Thiobacillus A₂, Thiobacillus neapolitanus, and a photolithotroph Rhodopseudomonas palustris. Cell suspensions from all of the thiobacilli catalyzed completely the oxidation of sulfide, thiosulfate, and sulfite to sulfate. The oxidation of thiosulfate in R. palustris …

Build-Up Of Mineral Content In Lake Dardanelle And The Effect On Zooplankton, Tom N. Palko

Arkansas Water Resources Center Technical Reports

No abstract provided.

A Position Paper Of Environmental Education For Nelson County, Geneva B. Hunt

Masters Theses & Specialist Projects

The results of a survey, concerning environmental education taken of the educators of the Nelson County School System, indicated a need for environmental education workshops and classes.

The status of environmental education in the nation and in Kentucky were studied and compared. A research was done of the status of environmental education in Nelson County, and implications were drawn for implementing environmental education in the Nelson County School System.

A tentative program for implementing environmental education in the Nelson Country schools was given, and a bibliography of resources and materials to be used in said program was included.

Water Current, Volume 6, No. 8, August 1974

Water Current Newsletter

Guest Editorial: Mandatory versus Voluntary, Dayle Williamson, Executive Secretary, Nebraska Natural Resources Commission
Deadlines for Research Projects
NWRRI Hosts Research in Action Conference
DEC Director Named
Nebraska Receives Discharge Elimination Report
Sewage Treatment Plant in Lincoln
Nebraska Drought
South Dakota Seeks Additional Missouri River Benefits
Main-Stem Water Marketing
OWRR Reorganized
ERTS Begins Third Year in Orbit
Sirotherm - An Australian Development for Purifying Water
Purpose, Policy and Objectives
Research Review: Alternatives in Area Management of Groundwater

A Model Of An Environmental Advisory Committee For City Government, Henry Barrett Baker

Masters Theses

No abstract provided.

Coastal Vegetational Communities Of The Two Texas Barrier Islands, Boca Chica And Brazos, Baltazar Cisneros

Theses and Dissertations - UTB/UTPA

Two Texas barrier islands, Boca Chica and Brazos, have unique coastal vegetational communities that may be Influenced by several environmental factors. These environmental factors include temperature, precipitation, wind speed, sunshine exposure, day length, and dune height. The purpose of this investigation was to determine the total number of coastal plant species per station, season, and year and to consider environmental factors that may significantly affect the number and pattern of coastal species. Coverage comparison between aerial and land sampling and aerial vegetational zonation was also considered.

Results indicated the presence of 21 angiosperm families and a total of 54 species. …

The Effects Of Sodium Chloride On Hyalella Azteca, Ameletus Sparsatus, And Tubifex Tubifex, Stephen A. Miller

Masters Theses

No abstract provided.

Water Salvage Potentials In Utah, Volume I. Open Water Evaporation And Monolayer Suppression Potential, Trevor C. Hughes, E. Arlo Richardson, James A. Franckiewicz

Reports

An estimate of the potential in Utah for evaporation suppression by the monolayer film method is presented. The model estimates evaporation suppression as a function of wind speed, a four parameter exposure factor, and reservoir size. The estimated suppression factors vary from 0 to 30 percent and average 11 percent of the statewide total annual evaporation. Estimates of May to October evaporation and suppression potential are calculated for each of the 227 impoundments in the surface water inventory. A forthcoming report in this series will examine the potential for evaporation suppression by thermal destratification. This procedure, which is already being …

Water Current, Volume 6, No. 7, July 1974

Water Current Newsletter

Guest Editorial: Hal L. Schroeder, Chairman, Water Resources Research Institute Advisory Committee
Deadlines for Research Proposals
Research Contracts from Old West Commission
State Reclamation Projects Funded
Water Management Needed in Nebraska
DEC Issues Power Plant Permit
Rann Proposal Guidelines Available
Water Resources Information Program
Principles and Standards - Procedure #1
New Energy Developments Will Use More Water
Research Review: A Regional Model for Predicting Great Plains Evapotranspiration

Water Current, Volume 6, No. 6, June 1974

Water Current Newsletter

From the Desk of the Director
1974 Summer Institute
Deadlines for Research Proposals
Support Available for PhD Candidates
EPA and Feedlot Industries
EPA--No Exception
Fire on Asbestos
Solar Hot Water Heater Available
Cancer from Drinking Water
1975 Autos May Be Health Hazards
Soil Acts as Neutralizer
Jack C. Jorgensen Appointed Associate Director of OWRR
New State Institute Directors
Research Review: Improved Water and Fertility Management in Irrigation Systems

The Prairie Naturalist Volume 6, No.2. June 1974

The Prairie Naturalist

WOOD DUCKS IN NORTH DAKOTA ▪ H. A. Doty

AERIAL FEEDING BY RED-WINGED BLACKBIRDS NEAR FULLER'S LAKE, NORTH DAKOTA ▪ W. C. Royall, Jr. & O. E. Bray

ARBOREAL WOODCHUCKS? ▪ K. T. Killingbeck

IMAGES, CHOICE, AND COMMUNITY DEVELOPMENT ▪ E. Smith

BREEDING STATUS OF THE LEAST BITTERN IN NORTH DAKOTA ▪ C. L. Cink

NOTE: Maximum Sizes for Ambystomatid Salamanders ▪ D. W. Larson

Seed Reserves In Desert Soils, David W. Goodall, Suzanne J. Morgan

Memorandum

Soil and litter samples were collected from the playa, playa fringe and bajada zones of the Jornada Validation Site. These samples were analyzed for their seed content, special attention being paid to spatial distribution. At the time of sampling, there was little litter on the soil surface, and the litter contained only a small proportion of the total seeds present.

Pinniped Populations At Islas Ae Guadalupe, San Benito, Cedros, And Natividad, Baja California, In 1968, Robert L. Brownell Jr., Robert L. Delong, Ralph W. Schreibe

United States Department of Commerce: Staff Publications

In April and June 1968, the Pacific Ocean Biological Survey Program (POBSP) of the Smithsonian Institution conducted surveys on breeding marine birds and pinnipeds on various Mexican islands. Between 18 to 26 April and 21 to 29 June, pinniped populations were surveyed at Islas de Guadalupe, San Benito, Cedros, and Natividad off Baja California. Species observed were the California sea lion, Zalophus californianus, Guadalupe fur seal, Arctocephalus townsendi, harbor seal, Phoca vitulina, and northern elephant seal, Mirounga angustirostris

Water Current, Volume 6, No. 5, May 1974

Water Current Newsletter

From the Desk of the Director
1974 Summer Institute
Dr. Peter Huntoon to Wyoming
Deadlines for Research Proposals
Two Matching Grants Funded
OWRR Scientist to Visit Nebraska
Nebraska's Research Needs
Water Permit Program Changes Hands
MRBC Announces Planning Goals and Objectives
Barbarossa Named MRBC Director of Planning
Nation's Water Quality - Getting Better or Worse?
Water Resources Development Act Signed
OSW Funds Cut (Again!)
EPA and WPCF to Recommend Changes to PL 92-500
More Flexibility for Effluent Guidelines
Research Review: Biological Control of "Sphaerotilus natans" and Other Related Species in Waste Waters

Nutrition Of Sheep Grazing Foothill Big Game Range In Spring, Kurt J. Kotter

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Sheep with esophageal fistulas were used to determine the daily intake, nutritive content and digestibility of forage at three periods and two stocking intensities during the spring of 1972 on a typical foothill range in northern Utah.

Heavy grazing under a season-long regime did not influence the concentrations of dietary chemical components when compared to moderate grazing; however, it did depress the digestibility of cellulose and organic matter. There was a significant decline in the dietary chemical components due to forage maturation. Digestibility of organic matter and cellulose were significantly higher in the early spring as compared to late spring. …

The Dynamics Of Root Growth And The Partitioning Of Photosynthates In Cool Desert Shrubs, Osvaldo Alberto Fernandez

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This study addresses the nature of physiological and phenological evolutionary strategies of root growth dynamics and energy allocation followed by Atriplex confertifolia, Ceratoides lanata, and Artemisia tridentata growing in their natural cool desert environment.

Root observation chambers with inclined Plexiglass windows were installed in monospecific desert communities of Atriplex confertifolia, Ceratoides lanata and Artemisia tridentata. Soil temperature and water potential measurements taken immediately adjacent to the observation windows indicated a minimal disturbance was caused by the presence of these chambers. For the three species initiation of root growth was observed before initiation of shoot activity, furthermore, active root growth extended …

A Study Of The Radiation Quality Under Plant Canopies In The Wave Range 0.4 To 2.5 Microns, Nolasco G. Baldazo

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The spectral distribution of the global radiation from 0.4 to 2.5 microns penetrating deciduous and coniferous canopies were measured during clear days between 10 a.m. and 2 p.m. using a double-quartz monochromator.

In the visible region (0.4 to 0.7 micron) the average relative spectral transmissions under both canopies are about one percent beginning at 0.4 micron and decreasing to about half a percent at 0.67 micron. There is only a small peak in the green (0.55 micron) transmission under deciduous stands while there is none under coniferous canopies. The slightly higher transmission in the blue (0.4 micron) is attributed to …

An Evaluation Of In-Stream Structures Designed To Provide Fish Habitat, Charles H. Call Jr.

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

In-stream concrete structures were studied through model tests and river tests. The model studies indicated that four designs provided good habitat in the model stream. These structures were the inverted weir, the "V" structure, the slab with legs and the cylinder. Through the river studies it was determined that these structures did not influence enough of the total river area to be effective in providing good fish habitat. Also an appreciable amount of yearly maintenance would be required to free the structures from silting in, debris, and vandalism. The slab with legs was the only promising structure.

International Regulation Of Marine Pollution From Land-Based Sources, Richard Tucker Scully

Marine Affairs Theses and Major Papers

Most of the waste products of human society end up in the oceans and the number and quantities of pollutants entering the oceans have been increasing at exponential rates. Recognition of these trends has resulted in expansion of international environmental attention to include sources of marine pollution other than vessels. Source, in this sense, refers to the pathway through which pollutants reach the sea. Land-based sources accounts for the vast bulk of the pollutants reaching the oceans. Effective protection of the marine environment, therefore, must include regulation of land-based sources of marine pollution.

Very Large Crude Carriers (Vlccs) And Rules Of The Road For The Prevention Of Collisions, Charles F. Ake

Marine Affairs Theses and Major Papers

A discussion of tanker ship development from the World War II T-2 to the million ton "Delta Ship" concept and an analysis of present and proposed Rules of the Road as they apply to VLCCs.The advantages of size, design characteristics, crew size and automation, propulsion systems and shiphandling characteristics are discussed in general comparitive terms. Projections show tremendous increase not only in the size of tank ships, but also in the size of the world's tanker fleet - approaching 5,000 vessels in the next ten years or so. The increasing size of crude oil carriers and their immense pollution potential …

The Tanker And Ocean Oil Pollution, Raymond Coombs

Marine Affairs Theses and Major Papers

It is now clear that the capacity of the oceans to accept some of the by-products of civilization is limited. The oceans can no longer be the world's sink, it we are to maintain the ecological viability of the biosphere. The dangers of the present situation are compounded by the difficulties in defining "marine pollution." Today's concern with pollution and its effects upon our way of life requires that the impact of ships on the marine environment be considered in order to minimize the risk that waterborne cargoes, particularly petroleum products, present to the ecology.

The Two Hundred Mile Economic Zone And Scientific Research, Peter R. Latham

Marine Affairs Theses and Major Papers

Knowledge of the deep ocean floor; continental shelves and margins is basic to many present and future uses of the sea. Such uses include mineral extraction, navigation of surface and subsurface vehicles, construction of structures on the sea bottom and along the margin, and exploitation of living resources of the shelf and of the water column. Uses of the ocean are directly impinged upon by technological changes resulting from research efforts. Applied science is nowhere more visible than in current development of offshore petroleum sources, development of new fisheries and speculation over possibilities for wealth awaiting mankind on the sea …