Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

Physical Sciences and Mathematics

Institution
Keyword
Publication Year
Publication
Publication Type
File Type

Articles 39541 - 39570 of 42659

Full-Text Articles in Entire DC Network

Repellent Or Aversive Chemicals In Sheep Neck Collars Did Not Deter Coyote Attacks, Richard J. Burns, Guy E. Connolly, Richard E. Griffiths Jr. Sep 1984

Repellent Or Aversive Chemicals In Sheep Neck Collars Did Not Deter Coyote Attacks, Richard J. Burns, Guy E. Connolly, Richard E. Griffiths Jr.

Vertebrate Pest Conference Proceedings: 11th (1984)

Since 1974 the Fish and Wildlife Service has studied a "toxic collar" to poison coyotes that attack collared sheep and goats. The collar patent (McBride 1974) indicates that the same collar could deliver chemicals to repel coyotes, thus saving both the coyote and the livestock.

This report summarizes our experience with nonlethal tests of collars. During collar tests with 10 different toxicants, 21 coyotes received sublethal doses followed by aversive behavior or potentially aversive reactions. The subsequent predation history of these coyotes was examined for prey-avoidance. After a sublethal test, all coyotes killed lambs or kids in about 40 days, …


Vole Control In Field Crops, Jerry P. Clark Sep 1984

Vole Control In Field Crops, Jerry P. Clark

Vertebrate Pest Conference Proceedings: 11th (1984)

There are five species of meadow voles found in California. The two that are most economically important are Microtus californicus and Microtus montanus. Meadow vole populations are extremely cyclic, reaching a peak every four to six years. During these periods when the vole population is increasing in numbers, damage to crops like alfalfa, artichokes, potatoes, and sugar beets can occur. The best time to survey for vole activity is before the crop is planted. The grower or farm operator should look for vole activity in grassy borders around the crop or along roadsides and ditch bank areas. Snap-trapping may …


Conference Participants Sep 1984

Conference Participants

Vertebrate Pest Conference Proceedings: 11th (1984)

The Conference totaled 409 registered attendees. The participants came from 30 states, the District of Columbia, and 15 other countries: Bangladesh, Canada, Denmark, Finland, Germany (Federal Republic of), Hong Kong, Italy, Japan, Mexico, Nigeria, Tanzania, United Kingdom, and Zimbabwe. Students from Egypt and Taiwan were also in attendance. The wide representation from the United States and from countries throughout the world contributed to the success of the Conference by providing a highly diversified group for the exchange of ideas and information.


Performance Of Sodium Cyanide Ejectors, Guy Connnolly, Gary D. Simmons Sep 1984

Performance Of Sodium Cyanide Ejectors, Guy Connnolly, Gary D. Simmons

Vertebrate Pest Conference Proceedings: 11th (1984)

Performance of three models of sodium cyanide (NaCN) ejectors was evaluated at Port O'Connor, Texas, early in 1982. M-44s, M-50s, and coyote getters were test-pulled and reset at 7-day or 21-day intervals for 42 days. Each pull was recorded as good if, in our judgment, it would have taken a coyote. Based on 402 to 430 test pulls of each ejector model, the percentages of good pulls were 40% for M-50s, 73% for M-44s, and 99% for coyote getters. M-44s with shortened plungers performed better than standard M-44s.

Most pulls of M-50s resulted in ejection failure due to corrosion between …


Nuisance Bats: Current Technology In Their Management And Control, Robert L. Corrigan Sep 1984

Nuisance Bats: Current Technology In Their Management And Control, Robert L. Corrigan

Vertebrate Pest Conference Proceedings: 11th (1984)

Managing nuisance bat colonies can be accomplished via exclusion (bat-proofing) or in limited cases via the use of repellents. Exclusion is emphasized as the first and most desirable approach providing it is also practical. New products and devices have recently become available which may significantly aid in making exclusion programs more possible and practical. Repellents such as lights, fiberglass batting and various improvised mechanical devices may all have some utilization. Controlling nuisance bats can be accomplished via the use of toxicants and trapping, although there is considerable opposition from many bat researchers towards the use of toxicants. Toxicants that have …


Woodpeckers: A Serious Suburban Problem?, Scott R. Craven Sep 1984

Woodpeckers: A Serious Suburban Problem?, Scott R. Craven

Vertebrate Pest Conference Proceedings: 11th (1984)

Damage to homes and buildings caused by woodpeckers is a widespread and locally severe problem in vertebrate pest control. This paper describes the distribution, characteristics, and impacts of woodpecker damage as determined by questionnaires, interviews, and published accounts. Woodpecker damage results from territorial behavior, feeding, or nesting activity. Some plywood and cedar are especially vulnerable. Average loss per incident is about $300, although some cases result in much greater losses. Disturbance and aggravation are also important factors. Abatement measures include scare devices, structural modification, chemical treatment of the siding, and shooting or trapping (with a permit). Success is variable. Recommendations …


Rat Control In Alberta, Michael J. Dorrance Sep 1984

Rat Control In Alberta, Michael J. Dorrance

Vertebrate Pest Conference Proceedings: 11th (1984)

A rat control program, administered and coordinated by Alberta Department of Agriculture, has kept Alberta essentially free of Norway rats (Rattus norvegicus) since 1950. A control zone, 29 x 600 km, along the eastern border prevents rats from moving into Alberta from the east. Sporadic rat infestations within the interior of Alberta are reported by concerned citizens and eradicated by government personnel. Strong support for the program by citizens and local governments was developed through public education and information. The program has been successful for a variety of reasons including geography, climate, legislation, availability of warfarin, the relatively …


The Phillipine Extended Jurisdiction: Its Cost And Benefits To Fishery Industry, Ricardo R. Federizon Sep 1984

The Phillipine Extended Jurisdiction: Its Cost And Benefits To Fishery Industry, Ricardo R. Federizon

Marine Affairs Theses and Major Papers

The Philippines is one of the countries that has its significant relations to fisheries economically and culturally. The coastal waters of the Philippines support over a million fishermen whose only source of income is fishing that does not go far off-shore. Due to population pressure and increased demand for fish as a basic food supply and as a source of foreign revenue income, more and more fishermen fish at the waters that carry a limited resource. As a result, overfishing persists that has a social and economic implication. Conflicts arise among the fishermen. Management measures are not implemented successfully because …


The Probe, Issue 46 - September 1984 Sep 1984

The Probe, Issue 46 - September 1984

The Probe: Newsletter of the National Animal Damage Control Association

THE PROBE
National Animal Damage Control Association No. 46 September, 1984
Second Eastern Wildlife Damage Control Conference
Personnel Changes
New Member
Aerial hunting
Seagulls
Coyote pelts
Ninth Bird Control Seminar Proceedings
Letters to Ye Ed
Gulls and Starlicide
Behavioral and Neural Biology
Eyeball Balloons Reduce Predation
Sav-A-Life
Predator Trapping
Grizzly Bears
Phencyclidine (PCP) and Bears
Australia and their Kangaroos


Wetlands And Coal Surface Mining: A Management Handbook, Milady A. Cardamone, Jan R. Taylor, William J. Mitsch Sep 1984

Wetlands And Coal Surface Mining: A Management Handbook, Milady A. Cardamone, Jan R. Taylor, William J. Mitsch

KWRRI Research Reports

As the third phase of a three-year project, this report outlines management options for protecting wetlands during the surface mining of coal, particularly for the portion of the Eastern Interior Coal Region that is found in Kentucky, Indiana, and Illinois. It is presented in manual form for use by coal mine operators, regulatory agencies and research institutions.

The previous phases of the project produced an atlas of the most heavily-mined areas of the western Kentucky coal field, which classified and identified wetlands in these areas, and discussed some specific impacts of mining on these wetlands. The need to present information …


The Prairie Naturalist Volume 16, No. 3. September 1984 Sep 1984

The Prairie Naturalist Volume 16, No. 3. September 1984

The Prairie Naturalist

Paul B. Kannowski, Editor

Nikki R. Seabloom, Assistant Editor

Douglas H. Johnson, Book Review Editor

TABLE OF CONTENTS

GRASSLAND HABITAT MANAGEMENT USING PRESCRIBED BURNING IN WIND CAVE NATIONAL PARK, SOUTH DAKOTA ▪ J. D. Forde, N. F. Sloan and D. A. Shown

BODY TEMPERATURES AND BEHAVIORAL ACTIVITIES OF HIBERNATING

PRAIRIE RATTLESNAKES, Crotalus viridis, IN ARTIFICIAL DENS ▪ K. R. Marion and O. J. Sexton

NEW VASCULAR PLANT RECORDS FOR NORTH DAKOTA ▪ D. T. Disrud, W. T. Barker and R. H. Warner

CHRISTMAS BIRD COUNTS FOR NORTH DAKOTA - 1983 ▪ R. N. Randall

COMPARISON OF PLANKTON POPULATIONS IN THREE …


John Muir Newsletter, August/October 1984, Holt-Atherton Pacific Center For Western Studies Aug 1984

John Muir Newsletter, August/October 1984, Holt-Atherton Pacific Center For Western Studies

Muir Center Newsletters (1981-2015)

Holt-Atherton Pacific Center \\/ / University of the Pacific for Western Studies X^ / Stockton, Calif 95211 VOLUME 4 AUGUST/OCTOBER 1984 NUMBER 4 EDITORIAL STAFF: RONALD H. LIMBAUGH, KIRSTEN E. LEWIS PROJECT UPDATE Muir scholars take note: the microform project is rounding third and heading for home. Since the last newsletter we have completed the filming of Series II (journals) and Series IV (illustrative works), and have begun filming Series III (manuscripts). The last series to be filmed, Series I (correspondence), is fully controlled but not yet camera-ready. By November we expect to have all the filming completed and processed. …


Discharge And Travel Time Determinations In The Royal Spring Groundwater Basin, Kentucky, John Thrailkill, Douglas R. Gouzie Aug 1984

Discharge And Travel Time Determinations In The Royal Spring Groundwater Basin, Kentucky, John Thrailkill, Douglas R. Gouzie

KWRRI Research Reports

Groundwater flow in many karst regions, including the Inner Bluegrass Karst Region of central Kentucky in which the study area was located, is unlike groundwater flow in granular aquifers. At least the major flows are turbulent and often with a free surface in large conduits, and applying concepts based on Darcy's Law to describe and model these flows is inappropriate. Parameters such as linear velocity, channel geometry, and conveyance used to describe surface streamflows are more applicable, and the primary objective of the project was to estimate these in a groundwater basin using the travel time of dye slugs and …


The Probe, Issue 45 - August 1984 Aug 1984

The Probe, Issue 45 - August 1984

The Probe: Newsletter of the National Animal Damage Control Association

THE PROBE
National Animal Damage Control Association No. 45 August, 1984
HR 1797, the Anti-trapping Bill
Bureau of Land Management
ASIW Publication SIP 817
Computer Rats
New device on the market that warns "most types of animals" of an approaching vehicle.
Office of Management and Budget
Letters to Ye Ed
ADC
New Member
Utah prairie dog
Red, Eastern and Western Gray Kangaroos
Rabies
Skunks


Toxicological Studies On Aquatic Contaminants Originating From Coal Production And Utilization: The Induction Of Tolerance To Silver In Laboratory Populations Of Fish And The Chronic Toxicity Of Nickel To Fish Early Life Stages, Wesley J. Birge, Jeffrey A. Black, James F. Hobson, Albert G. Westerman Aug 1984

Toxicological Studies On Aquatic Contaminants Originating From Coal Production And Utilization: The Induction Of Tolerance To Silver In Laboratory Populations Of Fish And The Chronic Toxicity Of Nickel To Fish Early Life Stages, Wesley J. Birge, Jeffrey A. Black, James F. Hobson, Albert G. Westerman

KWRRI Research Reports

Aquatic toxicity studies were performed on two important coal-derived contaminants, silver and nickel. Silver was investigated with regard to metal-induced tolerance in laboratory populations of the fathead minnow (Pimephales promelas). Fish were exposed to acute silver concentrations following acclimation to sublethal exposures of this metal. Based on median lethal times (LT50), animals which had received 14 days prior exposure to 1.5 and 15 μg Ag/L were three to four times more resistant to silver than were previously unexposed organisms. This metal-induced resistance was not a sustained response. After organisms which had been acclimated to 15 μg/L had been transferred to …


An Evaluation Of Naturally Occurring Populations Of Magnolia Tripetala L. In Indiana, Kemuel S. Badger Aug 1984

An Evaluation Of Naturally Occurring Populations Of Magnolia Tripetala L. In Indiana, Kemuel S. Badger

All-Inclusive List of Electronic Theses and Dissertations

Magnolia tripetala L. occurs in Indiana as a disjunct from the Appalachian mountains populations. Currently, the known distribution of ~· tripetala in Indiana is confined to seven sites in Crawford County. The current status of ~· tripetala and the surrounding plant community was evaluated to aid in the future study, protection and management of this species, which is endangered in Indiana. Systematic random sampling of the tree stratum was done with belt transects. The sapling and seeding strata were sampled with subplots, placed along the belt transects. Permanent plots were established to enable future monitoring of what is currently prime …


Color Computer Graphics As Applied To Introductory Calculus Instruction, Kathy B. Windhorst, Ralph E. Lee Jul 1984

Color Computer Graphics As Applied To Introductory Calculus Instruction, Kathy B. Windhorst, Ralph E. Lee

Computer Science Technical Reports

The use of computer graphics to support and enhance the presentation of introductory calculus concepts is described.

Computer graphics provides more accurate graph sketching, consistent presentations and the ability to develop mathematical models incrementally. The addition of extensive use of color aids even more, adding contrast, color keying, dimensionality, and interest to an illustration.

Ten lessons have been designed, developed, and evaluated. They employ a set of subroutines which interface to the NBC APC microcomputer graphics software. These lessons as developed and evaluated may be used interactively in the classroom or by individuals, or noninteractively in the classroom by the …


Orvs On The Cape Cod National Seashore, Karen G. Chaffee Jul 1984

Orvs On The Cape Cod National Seashore, Karen G. Chaffee

Marine Affairs Theses and Major Papers

With the creation of a National Seashore, we incur the responsibility of maintaining and preserving it. Since the establishment of the Cape Cod National Seashore in 1961, the use of off-road vehicles (ORV's) has increased dramatically. These vehicles damage the fragile ecosystems of the seashore. The National Park Service Cooperative Research Unit at the University of Massachusetts, Amherst was commissioned to undertake a five year study of the many facets of off-road vehicle impact on beach and dune as well as salt marsh and tidal flats.


Characterization Of Trihalomethane Formation From Proteins In Chlorinated Water, Robert Aaron Kravitz Jul 1984

Characterization Of Trihalomethane Formation From Proteins In Chlorinated Water, Robert Aaron Kravitz

Chemistry & Biochemistry Theses & Dissertations

Traditionally humates have been considered the most significant precursor in the formation of trihalomethanes in finished drinking water. This study investigates another potential precursor, namely proteins. The chlorination of aqueous protein solutions yields significant levels of trihalomethanes in terms of the maximum contaminant level (MCL) of 0.100 mg/L imposed by the USEPA. Molar yields for several proteins were determined. The average yield per unit of organic carbon was 0.5% as compared to 0.8% for a humic acid studied. A model protein, bovine serum albumin, was studied extensively to ascertain the effects of total organic carbon, chlorine dose, and time on …


The Spatial And Temporal Distribution Of The Larvae Of Sympatric Pagurid Hermit Crabs (Decapoda, Anomura) In Virginian Estaurine And Coastal Waters, Philip Wesley Sadler Jul 1984

The Spatial And Temporal Distribution Of The Larvae Of Sympatric Pagurid Hermit Crabs (Decapoda, Anomura) In Virginian Estaurine And Coastal Waters, Philip Wesley Sadler

OES Theses and Dissertations

Thirteen stations were occupied at two - week intervals from May through September 1980 within the York River, lower Chesapeake Bay depths encompassing the entire water column.

Three species of pagurids were identified: Pagurus longicarpus, P. pollicaris, and P. annulipes. The larvae of P. annulipes had not been previously identified from Virginian waters. The shapes of the antennae of P. pollicaris and P. annulipes weredistinctive, allowing rapid identification of these larvae. The shapes of the uropods were found to be useful in distinguishingthe glaucothoe· of P. longicarpus from P. annulipes. The larvae of these species …


Wetlands Preservation And The Protection Of Endangered Species As Limits On Western Water Development, A. Dan Tarlock Jun 1984

Wetlands Preservation And The Protection Of Endangered Species As Limits On Western Water Development, A. Dan Tarlock

The Federal Impact on State Water Rights (Summer Conference, June 11-13)

25 pages.


[Section] 404 Panel Discussion, Gregory J. Hobbs, Jr. Jun 1984

[Section] 404 Panel Discussion, Gregory J. Hobbs, Jr.

The Federal Impact on State Water Rights (Summer Conference, June 11-13)

5 pages.

Supplemental materials. Includes proposed bill language for Department of the Interior appropriations bill. Outline of key events and dates in the history of water law.


Panel: Section 404 Of The Clean Water Act And Section 7 Of The Endangered Species Act: Potential Impacts On Water Supplies [Supplemental Materials], Wendy C. Weiss Jun 1984

Panel: Section 404 Of The Clean Water Act And Section 7 Of The Endangered Species Act: Potential Impacts On Water Supplies [Supplemental Materials], Wendy C. Weiss

The Federal Impact on State Water Rights (Summer Conference, June 11-13)

57 pages.

Supplemental materials. Includes text of Riverside Irrigation District v. Andrews, 568 F.Supp 563 and Opening Brief of Plaintiff-Intervenor-Appellants in Riverside Irrigation District v. Andrews, Cases No. 83-2114, 83-2115, 83-2119, 83-2230, April 3, 1984.


Groundwater Control Programs Affecting Water Development, Arthur L. Littleworth Jun 1984

Groundwater Control Programs Affecting Water Development, Arthur L. Littleworth

The Federal Impact on State Water Rights (Summer Conference, June 11-13)

19 pages.


Ferc, Purpa And The Federal Power Act, Lawrence J. Wolfe Jun 1984

Ferc, Purpa And The Federal Power Act, Lawrence J. Wolfe

The Federal Impact on State Water Rights (Summer Conference, June 11-13)

62 pages.

Contains references.


The Case For A Legislative Solution To Indian Water Claims, James M. Bush Jun 1984

The Case For A Legislative Solution To Indian Water Claims, James M. Bush

The Federal Impact on State Water Rights (Summer Conference, June 11-13)

57 pages.


Reserved Water Rights Of Indian Allotments, Richard B. Collins Jun 1984

Reserved Water Rights Of Indian Allotments, Richard B. Collins

The Federal Impact on State Water Rights (Summer Conference, June 11-13)

10 pages.

Contains references.


Instream Flows As Reserved Rights On Federal Reservations After United States V. New Mexico, Hank Meshorer Jun 1984

Instream Flows As Reserved Rights On Federal Reservations After United States V. New Mexico, Hank Meshorer

The Federal Impact on State Water Rights (Summer Conference, June 11-13)

10 pages.


Effects Of The Clean Water Act On Water Availability And Development, Paula C. Phillips Jun 1984

Effects Of The Clean Water Act On Water Availability And Development, Paula C. Phillips

The Federal Impact on State Water Rights (Summer Conference, June 11-13)

12 pages.


Introduction To Reserved Water Rights, Ralph W. Johnson Jun 1984

Introduction To Reserved Water Rights, Ralph W. Johnson

The Federal Impact on State Water Rights (Summer Conference, June 11-13)

16 pages.