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Population Dynamics Of Pest Birds, Robert Mclean

Bird Control Seminars Proceedings

We want to talk now about population principles; this is our main problem dealing with populations. We should discuss the general application of population principles and the management of bird populations. The reason we can discuss this is because many species follow established principles; population growth and later regulation of its size follow certain basic rules. Many pest species follow these principles, but not always to the letter. Populations of different species, as well as of a species, vary depending upon local conditions. Local environments dictate what population levels and the growth of populations will be. Minor variabilities still fit …

Ecological Control Of Bird Hazard To Aircraft, V. E. F. Solman

Bird Control Seminars Proceedings

The Canadian Wildlife Service has had twenty-five years experience with the problem caused by bird contacts with aircraft. I experienced my first bird strike, while flying as an observer on a waterfowl survey in August, 1940. Officers of the Service investigated bird problems at airports at Yarmouth, Nova Scotia, and Cartierville, Quebec, in the late 1940's. Those incidents involving gulls and low speed piston-engined aircraft caused minor damage to the aircraft but considerable disturbance to the operators. As aircraft speeds increased and airports became more numerous and busier the problem increased in extent and complexity. By 1960 it was apparent …

Control Of Birds In The Airport Environment, C. E. Faulkner

Bird Control Seminars Proceedings

We now move from the inside of the hangar to the outside and view the problem of birds on runways and taxiways. The increased use of aircraft for transportation and the increased use of jet aircraft to take care of this transportation will, of course, compound our bird problems at major airports. To lesson this probability of the bird-aircraft strike, bird management plans should be initiated at these var¬ious commercial airports so we can lessen the bird problem. To show you some of the mechanics involved in a bird management plan, I'm going to take you to a typical airport …

Side Effects Of Persistent Toxicants, George J. Wallace

Bird Control Seminars Proceedings

As you can see from the general tenor of the printed program for this seminar, I am in the unenviable position of trying to discourage you from certain types of chemical control; but my assigned topic "Side Effects of Persistent Toxicants," implies that mission. However, my remarks may be somewhat anticlimax at this time, because it is now generally conceded that we need to reevaluate certain chemicals in control work and to restrict or severely curtail use of those that per¬sist for long periods in the environment. So let me detail my reasons for a somewhat negative attitude toward the …

Agricultural Bird Problems In The Midwest And East, Maurice L. Giltz

Bird Control Seminars Proceedings

We recognized this bird damage problem from an agricultural standpoint around 1950. It seemingly was growing and when we looked into it; it later appeared that this was the case. The problem was quickly resolved to be primarily red-winged blackbirds in corn. We also have problems of damage to fruit crops such as apples, or peaches by starling and other birds, in grapes probably by warblers and most certainly star¬lings in certain seasons. But, this isn't as consistent and persistent at the corn damage by red-winged blackbirds. We began about 8 years ago to make a survey and we got …

Table Of Contents -- Proceedings Third Bird Control Seminar

Bird Control Seminars Proceedings

No abstract provided.

Mineralized Springs In Utah And Their Effect On Manageable Water Supplies, James H. Milligan, Ray E. Marsell, Jay M. Bagley

Reports

Need and Importance of Study

Water demands in Utah are continuously increasing. It is essential that these demands be me to insure the continued enhancement of the social and economic well-being of all sectors of our society. Since water needs must be met from a relatively fixed water supply it is imperative that supplies be managed for complete utilization in such a way that all legitimate requirement scan be satisfied.

As our available water supplies are used more completely by making a given supply satisfy more than one use, water quality problems become more pronounced. The multiplicity of uses to …

Deer And The Ainsworth Canal, Karl E. Menzel

Nebraska Game and Parks Commission: White Papers, Conference Presentations, and Manuscripts

Merritt Dam and the Ainsworth Canal were constructed by the Bureau of Reclamation to provide irrigation water for the vicinity of Ainsworth in north central Nebraska. The reservoir was completed in 1964 and at capacity has an area of 2,906 surface acres. The canal commences at the Dam, 27 miles southwest of Valentine, and extends eastward for 52.8 miles to Highway 20 east of Johnstown. The canal, along with 174 miles of laterals and 63 miles of drains, serves to irrigate about 34,000 acres of farmland.

The Ainsworth Canal is lined with concrete along its entire length. In the western …

Development, Verification, And Use Of Methods To Model Chemical And Thermal Processes Lakes Mead And Powell, Bureau Of Reclamation

Publications (WR)

PURPOSE The purpose of the proposed research is to quantify the effects that Lakes Mead and Powell have on the salinity in the Colorado River system, and to evaluate changes that cap be made to the operating system of the reservoirs (within legal/institutional constraints) to enhance salt precipitation and/or minimize evaporation within the reservoirs. The effect of any changes (i.e., selective withdrawal uses, pumped storage, etc.) on reservoir evaporation could also be evaluated with a goal of minimizing evaporation. This will be accomplished through the development of a mathematical model of the reservoirs as described below. BACKGROUND Two major problems …

Handbook Of Nebraska Trees: A Guide To The Native And Most Important Introduced Species (Revised 1951), Raymond J. Pool

School of Natural Resources: Faculty Publications

Nebraska is not to be classified as a forested state since less than 3 per cent of the area of the state is covered by natural timber. However our native forest trees are numerous as to different kinds and their distribution in the state is characterized by many interesting facts. The every-day life of our people is not so commonly associated with trees as is that of peoples in the more wooded states where lumbering and the wood-working industries are very important occupations because of the proximity of great forests of coniferous or broadleaved trees. The people of Nebraska use …

Man And His Water Resource, Dean F. Peterson

Faculty Honor Lectures

Several preceding honor lectures have dealt with water. The title of a recent one, "Water and Man," by Dr. Sterling Taylor closely resembles the one for this paper. Dr. Taylor's paper dealt primarily with the physical science of water. This one will consider the nature of the use of water by man and the technological and institutional structure related to that use. Thus there should be no serious overlap. My friends in the social sciences may be surprised, too, to find that somehow this lecture has spilled over into their territory. But engineering is the implementation of science and technology. …

Antelope Creek, Dead Mans Run And Middle Creek: Salt Creek Basin, Volume Ii: Technical Appendix, United States Army Corps Of Engineers, Omaha District

United States Army Corps of Engineers, Omaha District

This report on Antelope Creek, Dead Mans Run, and Middle Creek is the second in a series of flood plain information reports being prepared for streams in the Lincoln, Nebraska metropolitan area. Volume I of this series, published in August 1964, described flood hazard areas of Salt Creek Haines Branch, and Beal Slough.

This Technical Appendix, covering Antelope Creek, Dead Mans Run, and Middle Creek, is presented in four sections. Section A presents information applicable to all three streams. Sections B, C, and D are devoted to information applicable to the individual streams.

Antelope Creek, Dead Mans Run And Middle Creek: Salt Creek Basin, Volume Ii: Summary Report, United States Army Corps Of Engineers, Omaha District

United States Army Corps of Engineers, Omaha District

Antelope Creek and Dead Mans Run, right bank tributaries of Salt Creek, rise within the Lincoln metropolitan area near the town of Cheney, and 84th and A Streets, respectively. These streams flow in a northwesterly direction and drain 14 and 10.5 square miles, respectively. Middle Creek, a left bank tributary of Salt Creek, rises in eastern Seward County and drains 100 square miles as it flows in an easterly direction to join Salt Creek in Lincoln. Urban development in these valleys is concentrated within the Lincoln city limits. Elsewhere the valleys are rural in character, with the land devoted to …

Stage-Fall-Discharge Relations For Flood Flows Over Highway Embankments, Gaylord V. Skogerboe, M. Leon Hyatt, Lloyd H. Austin

Reports

At Utah State University, considerable effort has been devoted to the analysis of submerged flow at open channel constrictions. A method of analyzing submerged flow was first developed for a trapezoidal flume by Hyatt (1965). Later studies verified the method of analysis for a rectangular flume (Skogerboe, Walker, and Robinson, 1965) and Parshall flumes (Skogerboe, Hyatt, England, and Johnson, 1965). Because of the previous findings, it was felt this method of analyzing submerged flow could be applied to highway embankments.

A highway embankment is a form of broad-crested weir when overtopped by flood waters. Being a weir, the flood discharge …

Ua3/3/1 Comments On Activities At The Western Kentucky State College Farm, Dallas Wheat

WKU Administration Documents

Report on how the WKU Farm was used in courses on agricultural engineering and soil and water conservation.

Modifications To Gate-Flume Structures On The Weber Davis Canal, Gaylord V. Skogerboe, M. Leon Hyatt

Reports

The turnout structures under study divert flows from the Weber-Davis Canal near Clearfield, Utah. A portion of the canal in this area was realigned as a result of the construction of the Interstate Highway System. The twin turnout structures, used to divert water to the West Branch Irrigation Company and West Layton Irrigation Company, were constructed in conjunction with the realignment of the concrete -lined canal.

A three-dimensional drawing of the twin turnout structures is shown in Fig. 1. Water is diverted from the canal by passing under the discharge diverted through each of the structures is approximately 35 cfs …

Index To The Genera, Subgenera, And Sections Of The Pyrrhophyta, Alfred R. Loeblich Jr, Alfred R. Loeblich Iii

Studies in Tropical Oceanography

No abstract provided.

Fisheries Report No 3 - Western Australian Freshwater Fisheries, Donald D. Francois

Fisheries Research Reports

Most of the Australian States have a comprehensive system of inland waterways, Western Australia, however, is in a less fortunate position. True, the maps of the State show many rivers, but in much of the southern, more populous part, with no summer rain and no winter snow, the majority are virtually a chain of waterholes during the long summer months. At the same time, in a relatively small section in the south-west corner, there is a series of permanent streams flowing through what was originally dense forest. But apart from the three indigenous freshwater crustaceans, the marron (Cherax tenuimanus), the …

Discrimination In Housing In Utah, Utah State Advisory Committee

Elusive Documents

No abstract provided.

Utah: A Guide For Teaching Social Studies, Fourth Grade, Della W. Mcclellan, Floyd Sucher

Elusive Documents

No abstract provided.

A Bacteriological Study Of Five Farm Ponds Of The Bear Valley Watershed, Nicholas F. Reuter

Honors Theses, 1963-2015

No abstract provided.

Piggery Septic System, N E. Macintyre

Journal of the Department of Agriculture, Western Australia, Series 4

ONE of the problems of intensive houses for pigs is the disposal of the dung and urine.

If proper arrangements are not made to remove this, it soon accumulates in an offensive pile at one end of the piggery, making an excellent breeding ground for flies.

Ammonium Nitrate Blasting Agent (Anfo) For Land Clearing, G A. Greaves

Journal of the Department of Agriculture, Western Australia, Series 4

The introduction of "prilled" AN has revolutionised explosives practice and made possible safer and cheaper methods of blasting.

This article outlines the methods of handling and using ANFO blasting agent for land clearing.

The Relationship Of Flooding And Saline Water Tables, Stanley Thomas Smith

Journal of the Department of Agriculture, Western Australia, Series 4

IN Western Australia there are several ways in which salt manifests itself but the most serious and extensive of these is in the valley systems where shallow saline water tables occur.

This type of salt problem is called "valley waterlogging" and occurs in most of the flat valleys throughout the wheatbelt of W.A.

Dieldrin Residues In Eggs And Fat Of Penned Pheasant Hens, Donald Wayne Lamb

Electronic Theses and Dissertations

At present, there is considerable interest in the effects of insecticides upon our wildlife populations. It is well known that chlorinated hydrocarbon insecticides are present in tissues and eggs of birds that receive these chemicals in their diets. Some workers, for example Gene11y and Rudd (1956) and DeWitt (1956), studied the effects of different levels of ingested insecticides on the reproduction of game birds. Additional studies are needed to relate the amount of insecticide in the diet to the level in the egg and that in turn to reproduction and effects on young birds. Work on pheasants is of special …

Population Distribution And Mobility Of Deer In Eastern South Dakota, Rollin De Mers Sparrowe

Electronic Theses and Dissertations

Population distribution and mobility of deer were studied intensively along a 15-mile stretch of the Big Sioux River, and less intensively on an expanse of 1400 square miles in central eastern South Dakota. Objectives were to determine relative population numbers and distribution of deer, the extent of their daily and seasonal movements, and the principal factors influencing these populations and movements, and to test winter hard counts as a population index. Deer were captured in Clover traps or with a Cap-Chur gun and were marked individually with ear tags, ear streamers, and collars. Some deer were tracked by radio telemetry. …

Economic Analysis Of Alternative Flood Control Measures By Digital Computer, Thomas M. Rachford

KWRRI Research Reports

The purpose of this project was to develop a digital computer program for selecting the optimum combination of flood proofing, flood-plain land use, channel improvement, and residual flood damage for a given floodplain. Based on economic efficiency, the optimum policy is selected for each planning unit of the total flood-plain for each period of time called a planning stage. The program was written in Fortran IV for the IBM 7040 and the University of Kentucky Computing Center compiler. The program requires about 23,000 words of core storage and about 30 seconds of execution time per planning-unit-stage for typical conditions. The …

Limnology Of Three Farm Ponds In South-Central South Dakota, Larry Kim Graham

Electronic Theses and Dissertations

Physical, chemical, and biological aspects of three farm ponds in south-central South Dakota were studied from June 1964 until December 1965. Maximum water temperature at the surface reached 25.2 C, while water temperatures at the bottom of the ponds were about 2 to 4C lower than the surface. Light transmission was influenced by turbidity but generally penetrated to the bottom of the ponds except during periods of cloudy ice and snow cover. Dissolved oxygen was near saturation during periods of open water. Most chemical ions in the ponds increased annually from a winter minimum to a spring maximum. Total dissolved …

Life History Of The Emerald Shiner In Lewis And Clark Lake, South Dakota, Everett H. Fuchs

Electronic Theses and Dissertations

The age, rate of growth, reproduction, feeding habits and population dynamics of the emerald shiner (Notropie atherinoides) were studied from 10, 375 fish collected in Lewis and Clark Lake South Dakota. The population consisted of four age groups dominated by young-of-the-yew during the summer and fall and by age group during spring and early summer. Age group II was common only in the spring and early summer. While age group III was rarely found. Average length at annulus formation was 66 mm for age group I and 84 mm for age group II. Females attained a size advantage over males …

Summer And Autumn Rainfall In Relation To Epidemics Of Wheat Stem Rust In Western Australia, W A. Shipton

Journal of the Department of Agriculture, Western Australia, Series 4

High summer and autumn rainfalls, followed by rust infection of volunteer plants and favourable conditions during late winter and spring, lead to rust epidemics.

WIDESPREAD outbreaks of wheat stem rust are rare in Western Australia.