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Food Selectivity Of Bigmouth Buffalo (Ictiobus Cyprinellus, Valenciennes) In Lake Poinsett, South Dakota, Victor J. Starostka

Electronic Theses and Dissertations

Food habits of bigmouth buffalo fry, subadults, and adults were studied in lake Poinsett, South Dakota, from January to November, 1968. Fifty-six fry fed primarily (75.0% by volume) on benthic organisms. Four hundred fifty-five subadults and adults fed entirely on plankton. Daphnia pulex adults comprised 83.7 to 96.7% of the food items during periods of ice cover (January to April). Daphnia pulex adults and juveniles comprised 68.5% by volume and cyclopoid copepods 29.7%^ of the diet from April to July. Summer (July to October) samples showed ingestion of D. pulex adults and juveniles (36.9%), Anacystis sp. (22.3%), and Daphnia galeata …

The Persistence Of Pesticides In Impounded Waters, Robert A. Lauderdale

KWRRI Research Reports

The purpose of this study was to investigate the persistance of the insecticides aldrin, dieldrin, chlordane, and DDT in water. A small drainage area was sprayed with these compounds, and the insecticides were collected in the runoff water from the area. Laboratory experiments were performed to determine the effectiveness of aeration, adsorption on silt, and adsorption on algae in removing the pesticides from water.

All of the pesticides were found in samples of water collected from the area for the full period of the tests. The amounts which were found in a small pond into which the surface water drained …

Water Quality Changes Under Ice Cover In Northern Prairie Lakes, Steven P. Gloss

Electronic Theses and Dissertations

Water quality changes under ice cover were studied in seven northern prairie lakes. The lakes are high in dissolved materials and exist essentially as closed systems during the winter months. Ice cover ranging from 53 to 86 cm developed on the lakes. Melted ice samples showed small amounts of dissolved impurities present in surface layers of the ice. No substantial concentrations of any ions were found in the ice of lower layers. Specific conductance increased over 40% under ice cover in two of the lakes studied. Increases in other lakes ranged from 19 to 38%. Major ions showed increases similar …

Effects Of Aldrin On Young Pheasants Under Semi-Natural Conditions, Ronald Eugene Thill

Electronic Theses and Dissertations

Effects of aldrin on young pheasants were studied under semi-natural conditions in four one-acre enclosures during the summer of 1968. The center two-thirds of each plot was planted in corn; remaining peripheral cover was maintained in smooth brome and alfalfa. Prior to planting, center portions of two plots were sprayed with 2 pounds of aldrin per acre on Hay 20, while remaining plots served as controls. On June 12, four family units consisting of two broody pheasant hens and two bantam hens with 15 three-day-old chicks each were confined in plots. Hens and broods were given free run 10 days …

On Temperature And Heat Flow In Tree Stems, Lee Pierce Herrington

Yale School of the Environment Bulletin Series

No abstract provided.

Aeration Of Stockade Lake, South Dakota, Larry C. Vanray

Electronic Theses and Dissertations

Intermittent aeration of Stockade Lake (2,470 acre feet) during the summers of 1967 and 1968 temporarily altered the thermal profile and phytoplankton density. Continual aeration for 48 hours in the deepest portion of this eutrophic lake produced epilmnetic cooling, hypolimnetic warming and apparent reduction of algal populations at three sampling stations in various parts of the lake. Dye, released at the aeration site, was found at all depths throughout the lake after 461/2 hours aeration. Air bubbles, rising from diffuser blocks near the lake bottom, carried cold, hypolimnetic water to the surface at a rate of 4.7 million gallons per …

The Prairie Naturalist Volume 1, No.4. December 1969

The Prairie Naturalist

EDITORIAL: Restoring Beauty to the Human Environment ▪ Paul B. Kannowski

A REQUIEM FOR THE PRAIRIE ▪ Hugh H. Iltis

BIRDING IN MY BACK YARD ▪ Mrs. George A. Anderson

OCCURRENCE OF THE CECROPIA AND ROCKY MOUNTAIN SILK MOTHS IN SOUTHWESTERN NORTH DAKOTA ▪ James Oberfoell

Effects Of Main Stem Impoundments And Channelization Upon The Limnology Of The Missouri River, Nebraska, Larry A. Morris, Ralph N. Langemeier, Thomas R. Russell, Arthur Witt Jr.

Nebraska Game and Parks Commission: Staff Research Publications

Rigid control has been imposed upon the Missouri River by impounding over one-half of the upper 1,500 miles and by channeling most of the remaining river within permanent, narrow banks. These controls have caused environmental changes in the lower Missouri River, as shown by this study, of adjacent unchannelized and channelized sections of river below the main stem impoundments. Impoundments have regulated flow by evening maximum and minimum discharges and improved downstream water quality by decreasing turbidity and indirectly raising the dissolved oxygen. In addition the impoundments have contributed a limnetic cladoceran, Leptodora kindti, to the drift and have …

Biological Studies Of Selected Reaches And Tributaries Of The Colorado River, Nelson Thomas, Federal Water Pollution Control Administration

Publications (WR)

This report fulfills the request of the Colorado River Basin Project, Denver, Colorado, to determine the effects of municipal and industrial wastes on the aquatic life in selected waters of the Colorado River Basin. These studies were conducted with the assistance of personnel from the Colorado River Basin Project.

Basic Statement On Migratory Bird Treaty, E. M. Bosak

Bird Control Seminars Proceedings

My portion of the program is the basic statement on the Migratory Bird Treaty Act regulations. Basically, laws are designed to control the actions of human beings. J. Edgar Hoover recently stated, "Man cannot live in our complex society today without a system of laws. The social system is doomed unless the laws are enforced, and the enforcement officer is ineffective unless his efforts to maintain the peace and protect life and property are supported by the government and the people." Therefore, it behooves each one of us to be aware of those laws that affect us in our everyday …

Costs Of New Materials: The Manufacturer's Dilemma, Dan Macdougall

Bird Control Seminars Proceedings

I thought it was possible that some of you might not be acquainted with some of the frustrations which are involved in jousting with the bureaucracy in Washington. So I thought I would review that situation very briefly for you, particularly in regard to the compound Queletox. We will confess that we had some real qualms about accepting this material for control as a bird toxicant initially. And the reasons we were concerned about this were because the compound was being used in other areas as an agricultural chemical. It was registered for mosquito control, and it was being used …

Roost Treatments Using 3-Chloro P-Toluidine Hydrochloride, Robert Schwab

Bird Control Seminars Proceedings

Pest birds cause serious damage to agricultural crops in most situations only when the number of individuals is very high. Often, large populations of avian pest species spend the hours of darkness congregated in roosts where they become vulnerable to certain control methods. Such is the case in California where certain pest species, particularity starlings and blackbirds, can often be found roosting in cattail-tule marshes. From these relatively concentrated populations the birds disperse to cause in some, but not all, cases of serious damage to certain agricultural crops. The obvious disadvantage resulting from the tendency of these birds to concentrate …

To Kill Or Not To Kill : That Is The Question, John R. Beck, William J. Spitz

Bird Control Seminars Proceedings

In talking with the panel that has agreed to be with you this morning, we find that almost to a man they feel very strongly there is no "it" in bird control, that a good applicator needs to be well balanced and well rounded, that he needs to know, far more than one approach, that he needs to be able to understand people, biological problems, ecology, eco-nomics, and several other factors. The idea that sometimes comes across in meetings such as this is, and rightly so in some instances, "I have the final answer." Gentlemen, there is no "it" in …

Utility Of Pyrotechnics In Bird Control, John R. Beck

Bird Control Seminars Proceedings

The balanced approach is essential for the proposed application of control methods for birds. The essential ingredients in a balanced approach are knowledge of the environment, both animal, plant and human; reasonable experience in the solution of biological problems; and an awareness of the possible solutions available. After these problems' qualifying ingredients have been met, the control specialist or investigator may apply the tool of choice. In most instances he will have selected alternatives available to himself. In the selection of the tool of choice and alternative methods, the cost of time, labor, materials and equipment, the need or purpose …

Chemosterilants And Bird Control, M. R. Woulfe

Bird Control Seminars Proceedings

The total scope of chemosterilants is very wide so I will comment only on the pigeon chemosterilant developed by G.D. Searle & Co. and then briefly on the role of chemosterilants, generally, in bird control. Searle's ORNITROL (SC-12937, azacosterol) is a chemosterilant which in-hibits reproduction in the pigeon and is to be used as a means of controlling pigeon populations. It is fed as a treated whole corn bait (0.1%) for a period of ten days and inhibits reproduction for about six months. We recommend treat-ment in the early spring just before the onset of the peak reproduction season to …

4th Bird Control Seminar -- Introductory Comments, William B. Jackson

Bird Control Seminars Proceedings

My travels the last few years have permitted me to see some aspects of bird management practices in both Asia and Europe. I must confess that had I not seen the Tori gates of Japan or the cathedral spires in Europe, I might well have thought I was in Ohio. Scarecrows were often seen. Fields were adorned with glittering strips of metal or blowing streamers of paper. In Scotland, red balloons flew over a turnip field. The sound of acetylene exploders sometimes fractured the tranquil countryside. While I saw many essentially useless devices for keeping birds out of man's agricultural …

Fourth Bird Control Seminar Proceedings: Frontmatter & Table Of Contents

Bird Control Seminars Proceedings

Seminar held September 16-18, 1968

Status Of Bio-Sonics In Pest Bird Control, Gordon W. Boudreau

Bird Control Seminars Proceedings

Bioacoustics is defined as the study of biologically significant sounds ori-ginated by animals, and the mechanisms which produce and receive these sounds. Many of these sounds are audible to the human ear but some are above the human hearing range and fall into the ultrasonics class. There are sounds used by animals which are near or below the normal human hearing range in pitch, as in certain fish. Bioacoustics comprises a broad field of investigation and is an area which has only recently been explored. Improvements in electronic audio equipment have provided the impetus which launched recent bioacoustical investigations and …

Daily And Seasonal Susceptibility Cycles Of The Starling, Robert G. Schwab

Bird Control Seminars Proceedings

I would like to review a few of the characteristics of 3-chloro-p-toluidine hydrochloride (DRC-1339) prior to discussion on the daily and seasonal suscep-tibility of starlings to this avicide. DRC-1339 was screened and developed by the Denver Research Center (U.S.D.I.) and since has been tested in various portions of the country by the Denver Center and other organizations, including the State of California. In California we are much impressed with this compound for a variety of reasons, particularly the specificity of it to birds, ease in handling, ease in formulation, and many other characteristics which make this a highly desirable avicide. …

Chemical Bird Control: Idealism And Reality, James B. Elder

Bird Control Seminars Proceedings

Budding wildlife biologists, whether they wind up in research, management or administration, start out with one attribute in common. They are idealists. It is idealism to be sure, that quickly becomes tempered, if not blunted, by the realities of working for worthwhile, even essential conservation goals in an in-different and frequently hostile environment. For some, the conflict of ideals vs reality is too much and they move on to other, probably more lucrative occupations. Still others, blessedly few in number, lose their ideals completely, become apathetic toward wildlife goals and devolve into that most pitiable of human specimens, the bureaucratic …

Presession Seminar On Blackbird Problems, Tom Stockdale

Bird Control Seminars Proceedings

I'd like to open with a very brief discussion, then call on some selected people with whom I've corresponded earlier, and ask if they will discuss a particular aspect of this total bird problem. I've asked that they keep their comments from three to five minutes. Trying to break the total problem down into its several facets we came up with six arbitrary subtopics. For want of better terms I've called these: population census techniques, chemical repellants, sonic repellants, wetting agents, lethal control techni-ques, and damage evaluation. Your particular problem in your area may be slightly different than in other …

The Prairie Naturalist Volume 1, No. 3. September, 1969

The Prairie Naturalist

EDITORIAL: A VOICE FOR CONSERVATION ▪ Paul B. Kannowski

CHRISTMAS BIRD COUNTS FOR NORTH DAKOTA—1968 ▪ Robert N. Randall

SOME ENVIRONMENTAL MANAGEMENT PROBLEMS AND PROPOSED SOLUTIONS ▪ Laurence R. Jahn

SOME PLANTS OF WESTERN MINNESOTA ▪ O. A. Stevens

MORTALITY OF MIGRATORY BIRDS AT GRAND FORKS, NORTH DAKOTA FOLLOWING A MOSQUITO CONTROL OPERATION IN MAY, 1969 ▪ Robert W. Seabloom, Lewis W. Oring and James R. Reilly

NESTING OF THE UPLAND PLOVER ON THE MISSOURI COTEAU ▪ K. F. Higgins, H. F. Duebbert and R. B. Oetting

NOTE

Albino sparrows discovered at Hazen, North Dakota ▪ Larry L. Kruckenberg and …

The Prairie Naturalist Volume 1, No. 2. May, 1969

The Prairie Naturalist

EDITORIAL: North Dakota's Naturalist-at-Large ▪ Paul B. Kannowski

WETLAND VEGETATION OF THE TURTLE MOUNTAINS, NORTH DAKOTA ▪ Robert L. Burgess and Dennis T. Disrud

RAPID METHOD OF FILTRATION OF MARSH WATERS ▪ V. A. Adomaitis and J. A. Shoesmith

NOTES

Additional distribution records of the false map turtle and the short-horned lizard in North Dakota ▪ Dennis J. Gemmell

Summer record of the snowy owl in North Dakota ▪ Donald R. Johnson

Long-billed curlews in LaMoure County, North Dakota ▪ Gary L. Krapu

The Prairie Naturalist Volume 1. No.1. March 1968

The Prairie Naturalist

EDITORIAL: Another Milestone ▪ John T. Lokemoen

NESTING OF THE COMMON SNIPE IN NORTH DAKOTA ▪ Robert E. Stewart and Harold A. Kantrud

SCIENCE WRITING — A PROBLEM ▪ Soren O. Kolstoe

INSECTICIDES: A DOUBLE-EDGED SWORD ▪ Richard D. Urban

NOTES

Why I like the Badlands ▪ Wayne Hecker

White-faced ibis in McIntosh County, North Dakota ▪ Harold F. Duebbert

Cinnamon teal observations in North Dakota ▪ A. T. Klett and John T. Lokemoen

Trumpeter swan in Kidder County, North Dakota ▪ Lewis M. Cowardin and James C. Bartonek

Specimen records of greater scaup ▪ Charles W. Dane and Harold …

The Systematics Of Sympatric Species In West Indian Spatangoids: A Revision Of The Genera Brissopsis, Plethotaenia, Paleopneustes, And Saviniaster, Richard H. Chesher

Studies in Tropical Oceanography

No abstract provided.

Problems Of Pollution: Benefits, Risks And Regulations, Richard E. Pogue, Dean E. Abrahamson

Journal of the Minnesota Academy of Science

The growing concern of the scientific community and informed segments of the public about the proliferation of untested nuclear power plants demands further evaluation of their environmental impact before irrevocable decisions are mode. This paper considers the problem of low-level radioactive wastes controllable at the source. A brief background is given of the governmental agencies concerned with radiation monitoring and protection. The underlying philosophy behind radiation protection and the guidelines for putting this philosophy into practice are considered. The risk implicit in these guidelines is assessed in terms of the expected increased incidence of specific injuries to human populations.

Biological Aspects Of Heat Pollution, Theodore Olson

Journal of the Minnesota Academy of Science

The importance of temperature as an environmental factor has long been recognized by the ecologist, and its special impact upon the aquatic ecosystem has been of interest to aquatic biologists since they first began to observe interactions between living things and the physical environment. Interest in water temperatures as an environmental factor has recently become more widespread; and one aspect of the phenomenon, namely "thermal pollution," has attracted special attention.

Discharge Of Radioactive And Thermal Wastes, Richard E. Pogue, Dean E. Abrahamson

Journal of the Minnesota Academy of Science

A combination of several economic factors, together with growing concern about air pollution associated with conventional, fossil-fuel electric generating facilities, hos contributed to the increase in size and number of nuclear-powered plants. Although these nuclear plants are "clean" from the standpoint of conventional air pollutants, they must dispose of thermal and radioactive wastes. This paper outlines the sources and quantities of these wastes, based on technical data for the boiling-water reactor proposed for Monticello, Minnesota.

The Cedar Creek Natural History Area: A Progress Report, William H. Marshall

Journal of the Minnesota Academy of Science

During the past five years, the utilization of the Cedar Creek Natural History Area by educators, research workers, and special, groups has increased steadily. Progress in administration, management, operations, and land acquisition is described in this paper, and the needs for the future are indicated.

The Certified Strains Of Subterranean Clover : Their Origin, Potential Use And Identification, B J. Quinlivan, C. M. Francis, M. L. Poole

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

SUBTERRANEAN CLOVER originated in the countries surrounding the Mediterranean Sea and in parts of Western Europe.

Therefore it is not surprising that it grows well in the agricultural districts of Western Australia, for these regions have a typically Mediterranean climate with cool wet winters and hot dry summers.