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Articles 22501 - 22530 of 22648
Full-Text Articles in Entire DC Network
Fox-Prey Relationships In Eastern South Dakota, Robert L. Drieslein
Fox-Prey Relationships In Eastern South Dakota, Robert L. Drieslein
Electronic Theses and Dissertations
Relationships between red foxes (Vulpes fulva) end their principal prey, particularly ring-necked pheasants (Phasianus colchicus), were studied on four units in eastern South Dakota from December 1964 to September 1966. Each unit was composed of a 100-square-mile "reduction area," on which fox populations were reduced, and a 100-square-mile "check area," on which fox populations were not reduced for the study. Indices to populations of foxes, pheasants, mice, eastern cottontails (Svlvilagus floridanus) and whitetail jackrabbits (Lepus townsendi) were obtained and used to evaluate food habits and the effect of predator reduction on prey populations. Four-hundred seventeen stomachs and 104 female reproductive …
Movement Of Forage Fishes In A South Dakota Stream, Thomas P. Felix
Movement Of Forage Fishes In A South Dakota Stream, Thomas P. Felix
Electronic Theses and Dissertations
Movement patterns of Semotilus atromaculatus, Rhinichthvs atratulus, Campostoma anomalum and Catostomus commersoni were investigated in an eastern South Dakota stream for a period of one year. Electrofishing, fin clipping and a multiple census method were employed. Population structures were estimated for each species. Populations were considered unstable due to the occurrence of appreciable emigration and immigration between sampling periods. Differential size class mobility was established for all species. Species exhibited upstream movement tendencies during the summer and more random movement tendencies during the fall. Size classes of S.atromaculatus, R. atratulus, and C. anomalum showed differential upstream movement affinities. Considerable growth …
Engineering For The Human Environment, Frank E. Moss
Engineering For The Human Environment, Frank E. Moss
Reports
President's Introduction: The environment of man has been the subject of intensive studies in recent years as the dangers of pollution became increasingly evident. The atmostphere we breathe, the water we drink, the food we eat, all are endangered by defilement. Thre resolution of the conflict can came only through a asystematic reordering of the national way of life so that man himself will not fall victim to the wastes of his civilization. For forty years Utah State University has been vitally concerned with the problems of pollution. Utah State surveys and studies have revealed the effects of pollutants on …
Administrative Budget Needs 1967-69, Utah Water Research Laboratory
Administrative Budget Needs 1967-69, Utah Water Research Laboratory
Reports
No abstract provided.
Proceedings Of A Symposium: Pollution Control Of Industrial Wastewaters, Calvin K. Sudweeks, Lynn M. Thatcher, Elmo Morgan, Franklin J. Agardy, R. E. Pailthorp, John C. Merrell Jr.
Proceedings Of A Symposium: Pollution Control Of Industrial Wastewaters, Calvin K. Sudweeks, Lynn M. Thatcher, Elmo Morgan, Franklin J. Agardy, R. E. Pailthorp, John C. Merrell Jr.
Reports
No abstract provided.
Blackbird Damage And Control--An Informal Seminar, M. I. Dyer
Blackbird Damage And Control--An Informal Seminar, M. I. Dyer
Bird Control Seminars Proceedings
The object is to hash over a few problems as we see them on this red-winged blackbird situation. I'm Mel Dyer, University of Guelph, Guelph, Ontario. Around the table are Tom Stockdale, Extension Wildlife Specialist, Ohio Cooperative Extension Service, Columbus; Maurice Giltz, Ohio Agriculture Research and Development Center, Wooster, Ohio; Joe Halusky, U.S. Fish and Wildlife Service, Columbus, Ohio; Daniel Stiles, U.S. Fish and Wildlife Service, Washington, D.C.; Paul Rodeheffer, U.S. Fish and Wildlife Service, Columbus, Ohio; Brian Hall, Blackbird Research Project, University of Guelph, Guelph, Ontario; George Cornwell, Virginia Polytechnic Insti¬tute, Blacksburg, Va.; Dick Warren, Peavey Grain Company, Minneapolis, …
Bird Control Methods And Devices--Comments Of The National Pest Control Association, Philip J. Spear
Bird Control Methods And Devices--Comments Of The National Pest Control Association, Philip J. Spear
Bird Control Seminars Proceedings
It may be useful to review some of the considerations that go into recommendations concerning bird management. Later I will make some comments concerning specific methods and devices being used in or promoted for bird control work regardless of whether or not they are new. Members of the National Pest Control Association provide a variety of services, such as fumigation, termite control and general pest control which includes rodent control. There are eight such categories listed in our roster, but only one member in five provides every service listed. Bird control is a rather recent development and is the newest …
Blackbird Flock Behavior In Corn, A Theoretical Model (With Session Discussion), M. I. Dyer
Blackbird Flock Behavior In Corn, A Theoretical Model (With Session Discussion), M. I. Dyer
Bird Control Seminars Proceedings
I realized this past winter that redwings form the base for an international problem, and so I went down to see Jim Caslick in Florida. Unfortunately, I picked the wrong season. I misjudged the weather for when I went down in May to get experimental birds it was pretty hot. Next year I'll be a bit more careful and go down during the winter time. I want to discuss something a bit different but still in line with crop damage by red-winged blackbirds. I want to relate the damage assessment that we're making in agricultural corn to bird behavior. We've …
Agricultural Bird Problems In The West, Donald Balser
Agricultural Bird Problems In The West, Donald Balser
Bird Control Seminars Proceedings
First, I'd like to qualify geographically, the area where most of our work is done and problems occur. It is primarily in the Rocky Mountain states and the west coast. While the area of the Denver Wildlife Research Center's responsibility covers the states west of the Mississippi River; the only area on the plains where our personnel have conducted intensive studies outside of Colorado is in South Dakota. The major bird problems in grain crops in the west are primarily caused by blackbirds excepting, of course, waterfowl depredations. It's difficult to rank the principal crops according to seriousness of losses. …
Frontmatter & Opening Remarks, 3rd Bird Control Seminar, William B. Jackson
Frontmatter & Opening Remarks, 3rd Bird Control Seminar, William B. Jackson
Bird Control Seminars Proceedings
Bowling Green State University, Bowling Green, Ohio, September 13-15, 1966.
Sponsored by the Department of Biology, Bowling Green State University, with the assistance of Division of Wildlife Services, United States Fish and Wildlife Service, and the National Pest Control Association, Elizabeth, New Jersey.
Dr. William B. Jackson, Conference Chairman; David E. Schneider, Conference Assistant; David E. Schneider and William B. Jackson, Editors.
Ecological Control Of Bird Hazard To Aircraft, V. E. F. Solman
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 …
Development, Verification, And Use Of Methods To Model Chemical And Thermal Processes Lakes Mead And Powell, Bureau Of Reclamation
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
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
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. …
Index To The Genera, Subgenera, And Sections Of The Pyrrhophyta, Alfred R. Loeblich Jr, Alfred R. Loeblich Iii
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 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 …
Limnology Of Three Farm Ponds In South-Central South Dakota, Larry Kim Graham
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 …
Proceedings Of A Summer Institute In Water Resources: Volume 1 - Philosophical, Institutional, And Legal Aspects Of Water Resources, Cleve H. Milligan, Charles E. Corker, Wayne D. Criddle
Proceedings Of A Summer Institute In Water Resources: Volume 1 - Philosophical, Institutional, And Legal Aspects Of Water Resources, Cleve H. Milligan, Charles E. Corker, Wayne D. Criddle
Reports
Foreward: Recognizing the need for training of individuals to meet the rapidly rising problems connected with water resources development, Utah State University, with National Science Foundation support, organized a Summer Institute in Water Resources for college teachers. it was hoped that participants carefully selected from all regions of the country would receive additional insight and stimulation to improve and enlarge water resources training programs at their own institutions. Thus, the accelerated dissemination of such knowledge on a national scale could be facilitated. Realizing further that the key to a successful institute of this nature lay in the excellence of its …
Proceedings Of A Summer Institute In Water Resources: Volume 4 - General Principles Of Water Resources Planning, Aaron Wiener, P. Zusman, W. R.D. Sewell, Harvey O. Banks
Proceedings Of A Summer Institute In Water Resources: Volume 4 - General Principles Of Water Resources Planning, Aaron Wiener, P. Zusman, W. R.D. Sewell, Harvey O. Banks
Reports
Foreward: Recognizing the need for training of individuals to meet the rapidly rising problems connected with water resources development, Utah State University, with National Science Foundation support, organized a Summer Institute in Water Resources for college teachers. it was hoped that participants carefully selected from all regions of the country would receive additional insight and stimulation to improve and enlarge water resources training programs at their own institutions. Thus, the accelerated dissemination of such knowledge on a national scale could be facilitated. Realizing further that the key to a successful institute of this nature lay in the excellence of its …
Water Chemistry Survey Of Boulder Basin, Lake Mead, P. R. Tramutt, Bureau Of Reclamation
Water Chemistry Survey Of Boulder Basin, Lake Mead, P. R. Tramutt, Bureau Of Reclamation
Publications (WR)
The survey results indicate that the impoundment of water behind Hoover Dam has not adversely affected the dissolved oxygen (DO) content and that water quality and DO content were uniform regardless of depth. The study made in April-May 1964 will provide water quality data of Lake Mead prior to releases from Lake Powell as a basis for evaluating Lake Powell's effect on water quality and limnology of Lake Mead. The performance of a DO analyzer was tested and found unsatisfactory at depths below 150 ft. Parameters tested by standard chemical analyses of water samples in the Denver Laboratory and by …
Amphibians And Reptiles Of Vigo County, Indiana, David Rubin
Amphibians And Reptiles Of Vigo County, Indiana, David Rubin
All-Inclusive List of Electronic Theses and Dissertations
Vigo County, Indiana is an extremely interesting area for herpetological studyo Its geographical location allows for the interplay of faunal elements from east, west, north, and south (Smith and minton, 1957) and its physiography permits investigation of the relations of terrain and glacial geology to herpetofaunal distribution. Blatchley (1891, 1899) published two papers on the amphibians and reptiles of the county and Allyn and Shockley (1938) reported on the county's salamandersa The present paper has the following objectives: to determine which species occur or have recently occurred in Vigo County; to determine amphibian and reptile distribution in the county; to …
Regulation Of Pheasant Density Through Nest Abandonment In South-Central Nebraska, Raymond L. Linder, C. Phillip Agee
Regulation Of Pheasant Density Through Nest Abandonment In South-Central Nebraska, Raymond L. Linder, C. Phillip Agee
Nebraska Game and Parks Commission: White Papers, Conference Presentations, and Manuscripts
In a five-year study of the ring-necked pheasant (Phasianus colchicus) in south-central Nebraska, Linder, Lyon and Agee (1960) proposed that "the quality of nesting environment determines the number of nests which will be successful in a given year; this regulates total production which in turn determines the following year's breeding population." These conclusions were based upon the following findings:
1. A close correlation existed between the number of chicks produced and the number of hens the following spring. Because of this relationship it was concluded that mortality through fall, winter and early spring was relatively constant from year …
Distribution And Relative Abundance Of Billfishes (Istiophoridae) Of The Pacific Ocean, John K. Howard, Shoji Ueyanagi
Distribution And Relative Abundance Of Billfishes (Istiophoridae) Of The Pacific Ocean, John K. Howard, Shoji Ueyanagi
Studies in Tropical Oceanography
No abstract provided.
Proceedings Of A Summer Institute In Water Resources: Volume 3 - Water Quality Control And Management, P. H. Mcgauhey
Proceedings Of A Summer Institute In Water Resources: Volume 3 - Water Quality Control And Management, P. H. Mcgauhey
Reports
Foreward: Recognizing the need for training of individuals to meet the rapidly rising problems connected with water resources development, Utah State University, with National Science Foundation support, organized a Summer Institute in Water Resources for college teachers. it was hoped that participants carefully selected from all regions of the country would receive additional insight and stimulation to improve and enlarge water resources training programs at their own institutions. Thus, the accelerated dissemination of such knowledge on a national scale could be facilitated. Realizing further that the key to a successful institute of this nature lay in the excellence of its …
Flow Rate Measurement Of Logan Outfall Effluents, M. Leon Hyatt, J. Raymond Johnson, Joe D. England
Flow Rate Measurement Of Logan Outfall Effluents, M. Leon Hyatt, J. Raymond Johnson, Joe D. England
Reports
No abstract provided.
Available Water Supply Of The Las Vegas Ground-Water Basin Nevada, Glenn Thomas Malmberg
Available Water Supply Of The Las Vegas Ground-Water Basin Nevada, Glenn Thomas Malmberg
Publications (WR)
The Las Vegas ground-water basin as described in this report includes the southern part of Indian Spring Valley, Three Lakes Valley, the northern half of Ivanpah Valley, and Las Vegas Valley. These valleys in part are inferred to form a hydrologic unit that includes an area of about 3,000 square miles in the southern part of Clark County, Nev.
The valleys forming the Las Vegas ground-water basin are broad structural depressions surrounded by mountains. The climate of the region is arid, and precipitation in the basin lowlands rarely exceeds 5 inches per year. Drainage is interior except for occasional Hood …
Limnology Of Carbonate – Bicarbonate Lakes In Nebraska, D. B. Mccarraher
Limnology Of Carbonate – Bicarbonate Lakes In Nebraska, D. B. Mccarraher
Nebraska Game and Parks Commission: White Papers, Conference Presentations, and Manuscripts
The relation between chemical, physical and biological indices was examined in 1,640 sandhill lakes during the years of 1954 to 1963. Sandhill lakes are formed by either (1) wind deflation basins and closed drainages or (2) exposed ground water table basins. Topography of the 20,000 square mile sandhill region is primarily stabilized dune sand interspersed with wet meadows and pine - cedar - oak river drainage systems. Two-thirds of the area is dune sandhills and one-third occupied by basins, valleys and lakes.
All of the lakes are comparatively shallow, the deepest lake being Blue Lake with 13.8 feet. The average …
Government Research (2nd Bird Control Seminar 1964), Clarence Faulkner , A. B. Stevenson , Carlton Herman
Government Research (2nd Bird Control Seminar 1964), Clarence Faulkner , A. B. Stevenson , Carlton Herman
Bird Control Seminars Proceedings
Papers include:
Control Methods and Pesticide Problems
Canadian Programs
Disease as a Factor in Bird Control
Academic Aspects Of Bird Control (2nd Bird Control Seminar 1964), William B. Jackson , Mel Dyer, Walter Howard
Academic Aspects Of Bird Control (2nd Bird Control Seminar 1964), William B. Jackson , Mel Dyer, Walter Howard
Bird Control Seminars Proceedings
Papers include:
Dr. William B. Jackson, Bowling Green State University - Undergraduate Preparation
Dr. Mel Dyer, Ontario Agricultural College, Guelph, Canada - Approaches to Research
Dr. Walter Howard, University of California, Davis - Some General Remarks Regarding Bird Control
Presentation of Specific Problems
Public Health Aspects Of Bird Control, William B. Jackson, Ralph Masterson, Paul Schnurrenberger, D. O. Jones, Roderic Jones, John Morley, George Mowrey
Public Health Aspects Of Bird Control, William B. Jackson, Ralph Masterson, Paul Schnurrenberger, D. O. Jones, Roderic Jones, John Morley, George Mowrey
Bird Control Seminars Proceedings
The first session; papers include:
Animal Diseases in General
Public Health Aspects of Bird Control or Zoonoses
Public Relations
Sanitation