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Articles 51151 - 51180 of 52591
Full-Text Articles in Entire DC Network
Phytoplankton Successions And Lake Dynamics In Las Vegas Bay, Lake Mead, Nevada, Ervon R. Koening, Richard W. Tew, James E. Deacon
Phytoplankton Successions And Lake Dynamics In Las Vegas Bay, Lake Mead, Nevada, Ervon R. Koening, Richard W. Tew, James E. Deacon
Publications (WR)
Phytoplankton successions, applications of the general growth equation, and physical measurements have been employed to investigate events occurring at the interface between industrial and sewage effluent contained in Las Vegas Wash and the waters of Lake Mead, Nevada. The data indicate that the entering waters tend to form a density current interrupted at intervals by dynamic effects generated in the lake. The dynamic relationships described here for the spring months suggest that a much more thorough understanding of physical, chemical and biological interactions is necessary to permit solution of the numerous problems of Las Vegas Bay discussed or alluded to …
A Gastric Battery For Fish, Earl R. Kendle, Larry A. Morris
A Gastric Battery For Fish, Earl R. Kendle, Larry A. Morris
Nebraska Game and Parks Commission: Staff Research Publications
We previously described, in Transactions of the American Fisheries Society (1965), vol. 94, p. 193-194 “A device for holding objects in the stomachs of fish," consisting of a 1/16-inch plastic rod formed to loop around the isthmus and extend down the gullet into the stomach. This harness was developed to secure an experimental gastric battery, not reported at that time. The battery was intended to power an ultrasonic tracking transmitter.
After 20-day trials of seven combinations of metals in an electrolytic solution of 0.5 percent hydrochloric acid, we chose gold and cadmium for the battery plates on the basis of …
Water Resources News, Volume 4, No. 8, October 1972
Water Resources News, Volume 4, No. 8, October 1972
Water Current Newsletter
Updated Version of Proposed Regulations Now Available
EPA Issues New Application Form for Submission of Grant Proposals
Reclamation and Reuse of Solids and Wastes
Fall Meeting of Nebraska Section of AWRA
Technology Transfer Conference
OWRR Director Resigns
Requested Delay in Big Blue Plan
Missouri River Waterfront
Missouri River Basin Commission Notes
Missouri River Money Hurdle
Fish Tale
Water Pollution Veto Overturned
OWRR Priorities for Fiscal 1974
Water Resources News, Volume 4, No. 7, September 1972
Water Resources News, Volume 4, No. 7, September 1972
Water Current Newsletter
North Loup Project Approved
NWC Endorses Cost-Sharing for All Federal Water Resource Projects
Tuition for Training Courses Imposed by EPA
Water Problems Emphasized by EPA
Environmental Protection Agreement Signed by US-USSR
Hazards Linked with Large-Scale Water Developments
NWC Recommends Enactment of Waterway User Charges
Refuse for Recreational Grounds
Water Development and Population Dispersal
Engineering Short Course
Rare Breed of Fish May Get Dam For Home
World Record Flow Measured on Amazon
Dam Inspection Bill Signed by President
Flood Insurance
Characteristics of Water Resources Research Centers
Drinking Water Legislation
A Preliminary Bibliography And Lake Index Of The Inland Mineral Waters Of The World, D. B. Mccarraher
A Preliminary Bibliography And Lake Index Of The Inland Mineral Waters Of The World, D. B. Mccarraher
Nebraska Game and Parks Commission: Staff Research Publications
This preliminary- bibliography and lake index has been prepared by the author on the basis of information available in the Office of Limnology, Hastings College, Nebraska. Although all source material available there has been searched, it is recognized that many papers, especially those published in regional languages may have been left out. Readers are requested to point out such omissions and any inaccuracies that require correction.
This preliminary bibliography will be circulated among specialists in the subject for corrections to the citations and for suggested additions to the list. It is planned that the paper will then be revised to …
The Relation Between Soil Characteristics, Water Movement And Nitrate Contamination Of Ground Water, Grant W. Thomas, Matthew Mcmahon
The Relation Between Soil Characteristics, Water Movement And Nitrate Contamination Of Ground Water, Grant W. Thomas, Matthew Mcmahon
KWRRI Research Reports
Soils from several areas in Kentucky were placed in columns and leached with Ca(NO3)2. Subsoils high in iron oxide were found to retard the leaching of nitrate very significantly. In other soils, the nitrate moved through as fast as or slightly faster than the water.
Field application of nitrogen to corn was most efficient when done in the spring or summer near the time that the corn takes it up. The one exception to this was a red soil, where fall application of nitrogen resulted in little loss due to the retarding effect mentioned in the …
A Mathmatical Model Of Primary Productivity And Limnological Patterns In Lake Mead, Lorne G. Everett
A Mathmatical Model Of Primary Productivity And Limnological Patterns In Lake Mead, Lorne G. Everett
Publications (WR)
The temporal and spatial changes in chemical and biological properties of Lake Mead have been investigated, thereby indicating the sources of water pollution and the time of highest pollution potential. Planktonic organisms have been shown to indicate the presence of water problems. Macro- and micro-nutrient analyses have shown that primary productivity is not inhibited by limiting concentrations. A mathematical model has been developed, tested with one set of independent data, and shown worthy of management utility. Although the model works very well for the Lake Mead area, the physical reality of the Multiple Linear Regression equation should be tested on …
The Geology Of The Pittsburg Landing Area, Snake River Canyon, Oregon-Idaho, David L. White
The Geology Of The Pittsburg Landing Area, Snake River Canyon, Oregon-Idaho, David L. White
All-Inclusive List of Electronic Theses and Dissertations
The major purpose of the study was to map, describe, and correlate the pre-Tertiary rocks. Accessible and excellent exposures at Pittsburg Landing enabled the writer to make a somewhat detailed study of the stratigraphy. The thesis area also offered an opportunity to study in a reconnaissance manner, the Tertiary Columbia River Basalt as described by Waters, and more recently y Ozier.
Location Of Solution Channels And Sinkholes At Dam Sites And Backwater Areas By Seismic Methods: Part Ii, Vincent P. Drnevich, D. Raghu
Location Of Solution Channels And Sinkholes At Dam Sites And Backwater Areas By Seismic Methods: Part Ii, Vincent P. Drnevich, D. Raghu
KWRRI Research Reports
Four seismic field methods and a laboratory method are used to determine shear wave propagation velocities and shear moduli for two sites. The four seismic methods are: standard seismic refraction survey, down hole shooting refraction survey, transient Rayleigh wave survey, and crosshole shooting survey. A torsional resonant column apparatus was used for the laboratory tests. The cross hole shooting method gave the best results because direct measurements were made. Criteria for using this method are given. Methods which measure compression wave velocity give inconsistent results because the conversion to shear wave velocity is very sensitive to Poisson's ratio. Laboratory tests …
Location Of Solution Channels And Sinkholes At Dam Sites And Backwater Areas By Seismic Methods: Part I, Vincent P. Drnevich, S. R. Smith, E. P. Cleveland
Location Of Solution Channels And Sinkholes At Dam Sites And Backwater Areas By Seismic Methods: Part I, Vincent P. Drnevich, S. R. Smith, E. P. Cleveland
KWRRI Research Reports
The basic concepts associated with the sledge hammer seismic refraction survey are reviewed and a modified version called down hole shooting is discussed. The latter method has distinct advantages for rock surface profiling. These include: calibration at the end points of the survey, measurement of vertical wave propagation velocities directly, and having a refracted wave ray path for almost the entire survey length.
The down hole shooting seismic refraction survey has been simulated with the digital computer. The method can handle any shaped rock surface profile and generates corresponding travel time curves for the forward and reverse profile surveys. This …
Environmental Status Report - January, February, March/April, May, June 1972, Florida Power Corporation
Environmental Status Report - January, February, March/April, May, June 1972, Florida Power Corporation
Reports
The publication of this issue of the Environmental Status Report incorporates the environmental activities of Florida Power Corporation from January to June, 1972_ As with the last Report, a six-month period is included, rather than two separate quarters, due to a scarcity of time_ It is hoped that the next issue will find the Report back on a Quarterly schedule_ The following is a summarization of the Company's supporting and associated activities from January 1, 1972 to June 30, 1972_ This work has been contributed to by many in the Company, and has been coordinated as a principal responsibility of …
Hydraulic And Sediment Transport Studies In Relation To River Sediment Control And Solid Waste Pollution And Economic Use Of The By-Products, Bruce R. Moore, Michael R. Short
Hydraulic And Sediment Transport Studies In Relation To River Sediment Control And Solid Waste Pollution And Economic Use Of The By-Products, Bruce R. Moore, Michael R. Short
KWRRI Research Reports
The distribution of sediments and conditions of transport were studied in the Kentucky, Big Sandy and Ohio Rivers. The sand and coal were in transport at different flow velocities for the rivers and the deposition of these sediments was a direct function of the flow conditions at a particular locality.
The flow conditions of transport of the sediments were studied in flumes as were the hydraulic conditions in model dredge holes to determine the feasibility of trapping sediment. The conditions of scour and fill were also established and compared with known conditions in a dredge hole in the Ohio River. …
Impact Of A Proposed Reservoir On Local Land Values, Philip Drucker, Charles R. Smith, Allen C. Turner
Impact Of A Proposed Reservoir On Local Land Values, Philip Drucker, Charles R. Smith, Allen C. Turner
KWRRI Research Reports
This project was designed to study the impact of private preconstruction land acquisition in a Central Kentucky area in which a flood-control dam and reservoir impoundment is planned. The research design was built around use of anthropological concepts and research techniques. By these means it was possible to analyze the perceived values of land to traditionalist residents, among which social and economic security concepts are paramount. Recent land purchases, locally believed to have been made chiefly by "outsiders," (urbanites from nearby Louisville), at prices out of line in terms of local agricultural worth, has been extremely unsettling contributing to the …
Water Resources News, Volume 4, No. 6, Summer 1972
Water Resources News, Volume 4, No. 6, Summer 1972
Water Current Newsletter
OWRR Issues Bibliography Series
Water Problems Emphasized More by EPA
Irrigation with Feedlot Effluent Studies by ARS
Industry Largest Water User in US
Satellite Launch Open Study
Colorado River Salinity Costs to be Studied
House Approves $150,000 Appropriations to Study of Cross-Florida Barge Canal
EPA Banned DDT
USBR Announces Water Resources Thesaurus
Estimates of Nation's Energy Resources Made by USGS
Lipotes Vexillifer , Robert L. Brownell Jr., Earl S. Herald
Lipotes Vexillifer , Robert L. Brownell Jr., Earl S. Herald
United States Department of Commerce: Staff Publications
Order Cetacea, Family Platanistidae, Subfamily Iniinae. The genus Lipotes now includes one species Lipotes vexillifer as treated below. No sub- species are recognized.
The Prairie Naturalist Volume 4, No. 2. June 1972
The Prairie Naturalist Volume 4, No. 2. June 1972
The Prairie Naturalist
EDITORIAL: Coordination: A Step for Environmental Protection ▪ Paul B. Kannowski
AN ANALYSIS OF BARN OWL AND GREAT HORNED OWL PELLETS FROM WESTERN NEBRASKA ▪ Eric A. Rickart
SUMMER OBSERVATIONS OF THE SHORT-EARED OWL IN THE RED RIVER VALLEY ▪ W. J. Walley
ADDITIONAL GLAUCOUS GULL RECORD FOR NORTH DAKOTA ▪ B. J. Rose
MIGRATION OF BIRDS IN NORTH DAKOTA DURING FALL 1971 ▪ Douglas H. Johnson, John T. Lokemoen and Paul F. Springer
WIDGEONGRASS BALLS ON ALKALI LAKES ▪ George A. Swanson and Paul F. Springer
A PROBABLE INSTANCE OF SONGBIRD COLLISION MORTALITY ▪ R. Wayne Weier
MUNICIPAL FLOODPLAIN …
The Development And Constitutionality Of The 1971 Delaware Coastal Zone Act, Francis Cameron
The Development And Constitutionality Of The 1971 Delaware Coastal Zone Act, Francis Cameron
Marine Affairs Theses and Major Papers
In June 1971, the Delaware Legislature passed the Delaware Coastal Zone Act that barred heavy manufacturing industry from locating in an area one to six miles deep along the state's 115 mile coastline. The act created a State Coastal Zone Industrial Control Board to hear appeals from decisions of the State Planner. In addition, the act prohibited the construction in the bay of marine terminals for the transshipment of liquid and solid bulk materials of any substance, (specifically aimed at offshore oil and coal transfer) from vessels to onshore facilities. The law's immediate effect was to block several hundred million …
Oil Pollution And The Coastal State, J. T. O'Brien
Oil Pollution And The Coastal State, J. T. O'Brien
Marine Affairs Theses and Major Papers
It will be the purpose of this paper to pose and answer this question...How has the legal competence of a coastal state been strengthened with respect to that state's ability to prevent marine oil pollution? The question by implication presupposes that a certain change in legal competence is in fact occurring. The legal and historical baseline from which to gauge this gradual change will be established by reviewing past milestones in oil pollution law. A closer examination will then be made of recent evolutionary changes in both international and national oil pollution law subsequent to the Torrey Canyon Disaster of …
External States And The Indian Ocean: The Potential For Confrontation, James P. Cartwright
External States And The Indian Ocean: The Potential For Confrontation, James P. Cartwright
Marine Affairs Theses and Major Papers
A study of the common interests of internal and external states in the Indian Ocean and identification of the methods, and their potential for confrontation, employed by external powers in pursuit of their interests. The historical interests of external powers in the Indian Ocean are depicted. Common interests, which have commanded the attention of internal states and external powers during recent years, are identified. The Indian Ocean is divided into five regions, each region characterized by the aforementioned common interests. The assets, mutual relations and interests of the littoral states comprising each region are described. The interests and methods of …
Saltmarsh Ecology And Resource Protection, Gerard Desire Blais Jr.
Saltmarsh Ecology And Resource Protection, Gerard Desire Blais Jr.
Marine Affairs Theses and Major Papers
A panoramic lack of conservation education has produced a populace largely unaware of the value of marshland resources or measures for their protection. In a relentless era of ecological abuse, wetlands and salt marshes rank with endangered animal species in the quantitative loss culminating in extinction. Challenged continually by the relentless sea and exploited by unsound attempts at development, management, or even conservation, the efficiency of the marshlands is decreasing with each successive invasion. There is a demonstrated reduction in biological productivity, flood control, and water quality in areas where dredging, draining, and filling of marshes has taken place.
A Draft Proposal For The Management Of The Offshore Sand And Gravel Deposits Of The State Of Rhode Island: Guidelines And Model Regulatory Legislation, Malcoolm Johnston Grant
A Draft Proposal For The Management Of The Offshore Sand And Gravel Deposits Of The State Of Rhode Island: Guidelines And Model Regulatory Legislation, Malcoolm Johnston Grant
Marine Affairs Theses and Major Papers
The Coastal Resources Management Council is charged with broad responsibility to "develop resource management plans compatible with the needs of the people of Rhode Island, while preserving and enhancing as far as possible the natural qualities of the marine environment." The proper function of coastal management is to maximize the options open to the people of Rhode Island in the development of their coastal resources. This goal can best be realized by providing for the resolution of developmental conflicts before they materialize. Uncontrolled past development and consequent unanticipated use conflicts of many types have already seriously compromised Rhode Island's ability …
The Delaware Limestone (Middle Devonian) Of Southwestern Ontario, Canada, Robert F. Diffendal Jr.
The Delaware Limestone (Middle Devonian) Of Southwestern Ontario, Canada, Robert F. Diffendal Jr.
School of Natural Resources: Faculty Publications
The Delaware Limestone of southwestern Ontario was originally called a part of the Corniferous Limestone by Murray (184.3-53). Since that time the same outcroppings have been designated, either wholly or partially, as the Onondaga Formation, the Big Lime, Delaware Limestone, Norfolk Formation, Dundee Limestone, Columbus Limestone, and the Dundee (= Delaware) Limestone. As recently as 1971 the names Dundee Limestone and Delaware Limestone were used for the same formation.
Hand specimen and petrographic study of samples from nineteen localities in southwestern Ontario indicates that the limestones of the formation exposed on the Niagara peninsula are intermediate in type between the …
Water Resources News, Volume 4, No. 5, May 1972
Water Resources News, Volume 4, No. 5, May 1972
Water Current Newsletter
New Publications Available from NWRRI
Neuberger Named Chairman - Missouri RBC
Muskie's Pullout May Speed Up the Clearn Water Bill
UCOWR Report Nearing Completion
Clemson Developing Manpower-Training Project to Aid EPA
US and Russia to Cooperate on Water and other Problems
Summer Workshop at Toronto
Hydraulic Dredging Short Course
Dreding Operators Short Course
Government Buying of Waste Bonds is Urged by Treasury
WRC Asks Congress for More Money to Study Water Needs
New Organization
Real Estate Lakes Turning to Messes in a Year
Economic Implications of Pollution Control Policy
Cloud-Seeding Program for Southwestern Oklahoma
New Study Reports Released by Commission
Population Biology Of The Black-Tailed Jackrabbit (Lepus Californicus) In Northern Utah, L. Charles Stoddart
Population Biology Of The Black-Tailed Jackrabbit (Lepus Californicus) In Northern Utah, L. Charles Stoddart
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Population biology of the black-tailed jackrabbit population on a 250-square-mile area in Curlew Valley, northern Utah, was studied from 1962-70. During this period the fall population density index increased from 40.0 in 1962, to 60.6 in 1963, decreased progressively to a low of 21.2 in 1967, then increased the following 3 years to a high of 185.0 in 1970.
Breeding was synchronous with four conception periods each year; in some years a fifth conception period was evident. The first conception period occurred about the last half of January; other periods followed at 40-day intervals indicating a 40-day gestation period and …
Investigations Of The Algal Productivity Of Selected And Limited Sites Along The Western Shore Of Bear Lake, Utah-Idaho, John William Sigler
Investigations Of The Algal Productivity Of Selected And Limited Sites Along The Western Shore Of Bear Lake, Utah-Idaho, John William Sigler
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Investigations of limited and selected areas along the western shore of Bear Lake were carried out to determine the relative algal productivity with relation to nutrient concentrations and incident sunlight. The primary objective of the study was to determine the effects of nutrient changes in the littoral zone on the western shore on the algal productivity and to establish a baseline of data.
l4C02 radioisotope was used as the principal measurement of organic carbon production as an estimate of productivity. Chlorophyll extracts were made and used as a secondary method for the estimation of productivity. Chemical analysis of …
Some Aspects Of Conditioning Behavior In Rainbow Trout, Salmo Gairdneri, Reed E. Harris
Some Aspects Of Conditioning Behavior In Rainbow Trout, Salmo Gairdneri, Reed E. Harris
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Effects of exercise, social facilitation, and delayed conditioning after vi exercise on the learning behavior of 5 to 6-inch rainbow trout, Salmo gairdneri, was measured in a conditioned avoidance response apparatus. The conditioning schedule contained an intertrial interval between alternate presentations of conditioned (light) and unconditioned (shock) stimuli. This randomization eliminated learning losses found in a previous study. Mean percentage avoidance, the measurement of learning, did not decrease significantly during conditioning trials. Exercised fish learned avoidance better than did non-exercised fish. Mean percentage avoidance for fish exercised at 0.5 ft/sec was 66.3; at 1.0 ft/ sec, 1.5 ft/sec, and …
Reproduction And Hematology Of The Cache Elk Herd, Thomas B. Follis
Reproduction And Hematology Of The Cache Elk Herd, Thomas B. Follis
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The initial three years of a 10-year reproductive study of elk involved three major phases. A fourth was added because of convenience. Objective 1 was to ascertain pregnancy rates in yearling and mature elk by rectal palpation, associate these rates with subsequent fall cow/calf ratios, and to test concurrently an ultrasonic fetal heart detector. Rectally observed anatomical changes in gravid uteri of cattle were directly applicable to elk. Ultrasonic detections of pregnancies in elk and deer were unsuccessful.
Pregnancy rates in the 1969-70 winter of 100 and 0 percent, respectively, for 19 adult and five yearling elk were associated with …
An Analysis Of Stock Densities And Harvest Of The Cutthroat Trout Of The Snake River, Teton County, Wyoming, John W. Kiefling
An Analysis Of Stock Densities And Harvest Of The Cutthroat Trout Of The Snake River, Teton County, Wyoming, John W. Kiefling
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
An intensive creel census and marking program was conducted in 1969 and 1970 to make possible population estimates and estimates of harvest of cutthroat trout in the Snake River in Teton County, Wyoming. Stock density determinations made in one of the five study areas provided an estimate of 400 and 992 cutthroat trout, eight inches or more in length, per mile of stream in 1969 and 1970 respectively.
Harvest data provide an estimate of 5,207 and 5,903 cutthroat trout harvested in 1969 and 1970 respectively. The harvest estimates obtained in this study are not comparable to those made in 1967 …
Effect Of Bear River Storage On Water Quality In Bear Lake, Utah-Idaho, Robert L. Nunan
Effect Of Bear River Storage On Water Quality In Bear Lake, Utah-Idaho, Robert L. Nunan
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Since 1912 concentrations of the major anions and cations (except calcium) in Bear Lake water have shown a steady decrease which has been attributed to a dilution of Bear Lake by Bear River water, Bear Lake having been used as a reservoir for Bear River water since 1918. This study examined the changes which have occurred in Bear Lake water chemistry since 1912 and tested the validity of the dilution theory.
Simple water and salinity budgets were determined for the Bear Lake system and used to simulate the effect of Bear River storage patterns since 1918 on the concentrations of …
Effect Of Early Growth Cultivation On Beans And Sweet Corn, Raymond L. Cartee
Effect Of Early Growth Cultivation On Beans And Sweet Corn, Raymond L. Cartee
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Investigations involving four cultivation treatments were conducted at the Utah State University Greenville Experimental Farm to determine the effect of these treatments on yields of beans and sweet corn. The effects of the different treatments on soil water content, soil temperature, and weed control in beans and corn were investigated. The effect of cultivation on the degree of root rot infection and the effect of different planting dates were also investigated in the bean study.
The pre-emergence treatment (ridged just before the plants emerge) produced a 48 percent greater bean yield and a 40 percent greater corn yield than the …