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Articles 4861 - 4890 of 6879

Full-Text Articles in Physical Sciences and Mathematics

An Evaluation Of Floating Ropes For Reducing Cormorant Damage At Catfish Ponds, Donald F. Mott, Richard D. Flynt, Junior O. King Oct 1993

An Evaluation Of Floating Ropes For Reducing Cormorant Damage At Catfish Ponds, Donald F. Mott, Richard D. Flynt, Junior O. King

Eastern Wildlife Damage Control Conference: 6th (1993)

A floating rope system consisting of lengths of 9.5 mm (3/8 in) yellow polyethylene rope and foam floats was evaluated for reducing double-crested cormorant (Phalacrocorax auritus) depredation on farm raised channel catfish (Ictalurus punctatus) Mississippi. The ropes were placed at 15-17 m intervals across 2 ponds (4.6 and 6.0 ha) perpendicular to the prevailing winds. Helium-filled balloons were used in an attempt to enhance the effect of the ropes. Cormorant numbers entering both test ponds were recorded during pretreatment, treatment, and posttreatment periods. The floating ropes were effective in reducing cormorant numbers on ponds (by at least 95%) during the …


Balancing The Needs Of Society: Listening To The Public, Robert K. Schmidt Oct 1993

Balancing The Needs Of Society: Listening To The Public, Robert K. Schmidt

Eastern Wildlife Damage Control Conference: 6th (1993)

Wildlife damage management, as a professional activity, is involved in a broad range of management issues affecting agricultural productivity and profitability, human health and safety, and endangered and valued species management. Surveys by S. Kellert and others have indicated that the general public is agreeable to resolving wildlife damage issues, even utilizing lethal technologies. However, surveys and case histories have also indicated that the process involved in resolving wildlife damage issues invokes much public concern. By process I mean the specific methodologies, strategies, and resource and social tradeoffs involved in developing and implementing a wildlife damage management program.


Perceptions Knowledge Of Alabama Fruit And Vegetable Producers Towards Coyotes, M. Chad Philipp, James B. Armstrong Oct 1993

Perceptions Knowledge Of Alabama Fruit And Vegetable Producers Towards Coyotes, M. Chad Philipp, James B. Armstrong

Eastern Wildlife Damage Control Conference: 6th (1993)

Members of the Alabama Fruit and Vegetable Producers Association (AFVP) were surveyed in 1992-1993 to assess their attitudes and knowledge of coyotes and the amount of perceived damage caused by coyotes. A mail-back questionnaire was developed and pilot tested. The revised questionnaire was sent to all members (N = 84) of the AFVP; individuals whose main income is the production of fruits and vegetables. Seventy-seven percent (n = 61) of those surveyed returned completed questionnaires. Tests for nonresponse bias were conducted and results showed no significant difference. Attitudes were assessed using a Likert scale where 1 = respondents favoring maximum …


Rejex-It(Tm)Ag-36, A Potential Tool To Protect Seeds From Bird Depredation, Peter F. Vogt Oct 1993

Rejex-It(Tm)Ag-36, A Potential Tool To Protect Seeds From Bird Depredation, Peter F. Vogt

Eastern Wildlife Damage Control Conference: 6th (1993)

The ever increasing bird populations (e.g., Black birds, geese etc.) are known to cause considerable losses to agriculture. This problem has reached serious proportions for crops that are farmed on large tracts and are seeded by aerial application such as rice and canola. ReJeX-iTTM AG-36, a non-toxic, biodegradable bird aversion formulation, derived from food grade ingredients, has been proven in pen tests and field trials to be effective as a seed treatment to prevent birds from eating the treated seeds. The product does not harm the seeds or the effected birds in any way, even if ingested; it just makes …


Evaluating The Gas Cartridge For Coyotes In Controlling Badgers, Craig A. Ramey Oct 1993

Evaluating The Gas Cartridge For Coyotes In Controlling Badgers, Craig A. Ramey

Eastern Wildlife Damage Control Conference: 6th (1993)

Efficacy investigations were conducted in Pampa, Tx to evaluate the use of the “GAS CARTRIDGE FOR COYOTES: (Canis latrans) for controlling problem badgers (Taxidea taxus) in burrows. This coyote cartridge with two active ingredients (sodium nitrate and charcoal), produces high concentrations of carbon monoxide when burned and is effective in controlling coyotes in dens. Badgers were live-trapped, immobilized, and equipped with mortality-indicating radio transmitters prior to their release. Movements were monitored for a minimum of 12 days prior to each initial efficacy test and for at least 3 days in follow up tests for survivors. Only occupied burrows, unplugged and …


Use Patterns Of Nuisance Black-Crowned Night Herons On A Hydroelectric Dam In Eastern Tennessee, Michael A. Wefer, Joseph W. Lee, William G. Minser Oct 1993

Use Patterns Of Nuisance Black-Crowned Night Herons On A Hydroelectric Dam In Eastern Tennessee, Michael A. Wefer, Joseph W. Lee, William G. Minser

Eastern Wildlife Damage Control Conference: 6th (1993)

Black-crowned night heron (Nycticorax nycticorax) droppings are a problem on Fort Loudoun Hydroelectric Dam. Annual and daily use patterns were monitored to determine when and what areas of the dam the herons were using. The dam was used primarily during the breeding season (April-July) and received 24.2% more use in the evenings than in the morning. The most use occurred in June with a high of 211 birds 12 June 1991 and 266 birds 5 June 1992. Herons used band railings on the dam the most (66%) for perching. About 12% of the night herons using the dam were juveniles. …


A Summary Of Reported Deer-Related Vehicle Accidents In A Virginia City, Patrick F. Scanlon, William F. Wilmoth, Ralph W. Rexroad Oct 1993

A Summary Of Reported Deer-Related Vehicle Accidents In A Virginia City, Patrick F. Scanlon, William F. Wilmoth, Ralph W. Rexroad

Eastern Wildlife Damage Control Conference: 6th (1993)

Data from 548 reported accidents involving white-tailed deer (Odocoileus virginianus) and vehicles in Lynchburg during the years 1987-1991 were summarized. A majority (54.4%) occurred in the months October, November and December with 25.9% occurring in November. While accidents occurred at all hours, most (50%) occurred between 1700 and 0100 hrs.; about 12% occurred between 0600 and 0900 hrs. Accidents occurred on all days of the week (range 12.8% to 17.0%) and were not higher on work days. Adverse weather did not seem to he a factor increasing collisions; 80% of collisions occurred in clear weather. Most (75%) accidents occurred in …


The Applicability And Biopolitics Of Contraceptive Techniques For Deer Management, Robert J. Warren, Lisa M. White Oct 1993

The Applicability And Biopolitics Of Contraceptive Techniques For Deer Management, Robert J. Warren, Lisa M. White

Eastern Wildlife Damage Control Conference: 6th (1993)

While regulated public hunting or controlled lethal reduction programs are effective in controlling white-tailed deer (Odocoileus virginianus), populations in most areas, increasingly there are settings (e.g., urban and suburban environments) where such programs are either unsafe or publicly unacceptable. Past research with contraceptive techniques in deer have shown these techniques to be either ineffective or infeasible for managerial implementation. Current research with immunocontraceptives show promise as being both effective and feasible for field application. Immunocontraceptive vaccines can be delivered remotely and are highly effective in causing infertility in most treated does. Much more research is needed before these techniques can …


The Use Of Odor To Induce Avoidance Behavior In Pine Voles, Christopher J. Salatti, Anthony D. Woolhouse, John G. Vandenbergh Oct 1993

The Use Of Odor To Induce Avoidance Behavior In Pine Voles, Christopher J. Salatti, Anthony D. Woolhouse, John G. Vandenbergh

Eastern Wildlife Damage Control Conference: 6th (1993)

Commercial orchards, ornamental nurseries, and residential horticulture in North Carolina experience economic losses due to pine vole (Microtus pinetorum) depredation. Predator odors and the herbicide Casoron were tested as potential repellents for pine voles. To test for avoidance behavior, animals were allowed to build a nest in one of two chambers attached to each arm of a Y-maze. The cage containing the nest was treated with either a test repellent compound, methylene chloride (solvent control), or left unmanipulated (control). Animals were categorized as either maintaining or changing nest cage preference between pre-test and test periods. The number of animals that …


Long-Term Trial Of An Inflatable Effigy Scare Device Or Repelling Cormorants From Catfish Ponds, Allen R. Stickley Jr., Junior O. King Oct 1993

Long-Term Trial Of An Inflatable Effigy Scare Device Or Repelling Cormorants From Catfish Ponds, Allen R. Stickley Jr., Junior O. King

Eastern Wildlife Damage Control Conference: 6th (1993)

Growing winter populations of double-crested cormorants (Phalacrocoax auritus) over the past decade have caused serious depredation problems for commercial channel catfish (Ictalurus punctatus) growers in the Mississippi Delta (Stickley and Andrews 1989). Stickley et al. (1992) found that cormorants allowed to feed without hindrance took an average of 5 catfish fingerlings per foraging hour, but at times took as many as 28 fingerlings per hour. Obviously, growers have to repel these birds or suffer heavy losses where the cormorants are feeding on catfish fingerlings and not gizzard shad (Jorosoma Gredianum) as they at times do (Stickley et al. 1992). Motionless …


Assessing And Reducing Soybean Crop Losses From Deer: An Interdisciplinary, Multi-Agency Effort, S. U. Wallace, J. H. Palmer, G. K. Yarrow, D. Shipes, E. J. Dunphy, P. F. Reese Jr. Oct 1993

Assessing And Reducing Soybean Crop Losses From Deer: An Interdisciplinary, Multi-Agency Effort, S. U. Wallace, J. H. Palmer, G. K. Yarrow, D. Shipes, E. J. Dunphy, P. F. Reese Jr.

Eastern Wildlife Damage Control Conference: 6th (1993)

Damage from white-tailed deer (Odocoileus virginianus) has become a common complaint of soybean (Glycine max) producers in many areas of the Southeast. Both short- and long-term, single-field and community-wide solutions to this problem are needed. This paper describes a multi-agency, multi-state effort, involving agronomists, wildlife biologists, producers, and other landowners, to assess soybean losses from deer and to evaluate potential solutions. One phase of this work, which is supported by soybean producer checkoff funds, involves evaluating agronomic practices for reducing crop losses. These include drilled (rather than wide-row) plantings and use of insect-resistant or dense-pubescent cultivars (varieties) which may deter …


Status Of Alpha Chloralose And Other Immobilizing/Euthanizing Chemicals Within The Animal Damage Control Program, Paul P. Woronecki, William L. Thomas Oct 1993

Status Of Alpha Chloralose And Other Immobilizing/Euthanizing Chemicals Within The Animal Damage Control Program, Paul P. Woronecki, William L. Thomas

Eastern Wildlife Damage Control Conference: 6th (1993)

In 1992 the U.S. Department of Agriculture (USDA), Animal and Plant Health Inspection Service, Animal Damage Control (ADC) program was granted approval from the U.S. Food and Drug Administration (FDA), under a continuing Investigational New Animal Drug agreement, to use Alpha-chloralose (A-C) nationwide for capturing nuisance waterfowl, coots, and pigeons. FDA and ADC have imposed several requirements, restrictions and conditions on the operational use of A-C. Training and certification are required to use A-C and other approved immobilizing and euthanizing agents.


Predator Depredations On Sheep In Pennsylvania, Gary W. Witmer, Arnold Hayden, Michael Pipas Oct 1993

Predator Depredations On Sheep In Pennsylvania, Gary W. Witmer, Arnold Hayden, Michael Pipas

Eastern Wildlife Damage Control Conference: 6th (1993)

The eastern coyote (Canis latrans) has become common and widespread in many eastern states. We surveyed 331 sheep producers in Pennsylvania (PA); 22% reported predator losses in 1991, primarily to dogs and coyotes. Losses were heaviest in the southwest part of PA and producers reporting losses tended to have more sheep and more acreage in pasture. To reduce losses, producers used lambing sheds, fences, guard dogs and donkeys, confinement of sheep, trapping, and shooting. It appears that we can expect greater depredations in the future because of increased coyote numbers and a relatively low level of protection of sheep; however, …


Analysis And Evaluation Of The Workplace Exposure Assessment Workbook Developed By Keith Tait Including Some Recommended Revisions, Lisa Hebberd Oct 1993

Analysis And Evaluation Of The Workplace Exposure Assessment Workbook Developed By Keith Tait Including Some Recommended Revisions, Lisa Hebberd

UNLV Theses, Dissertations, Professional Papers, and Capstones

Some risk due to the contamination of workplace environments is an inevitable part of human lives. These risks can often be reduced by improving the control of environmental pollution in the workplace. An extremely important challenge for any industry is to develop a mechanism to identify acceptable levels of safety, or "acceptable risk" in the workplace for specific situations, and to assure adequate quality control over measured or calculated exposure concentrations and their possible contributions to adverse health effects.


Landowners Perceptions Of Crop Damage From White-Tailed Deer In South Carolina, Webb M. Smathers Jr., Gary R. Stratton, Derrell Shipes Sep 1993

Landowners Perceptions Of Crop Damage From White-Tailed Deer In South Carolina, Webb M. Smathers Jr., Gary R. Stratton, Derrell Shipes

Eastern Wildlife Damage Control Conference: 6th (1993)

Survey respondents reported a definite increase in the population of white-tailed deer (Odocoileus virginianus) in South Carolina. Almost 73% of the producers from a random sample indicated that deer populations have increased over the five year period preceding 1991. With a higher deer population, crop damage from deer became more prevalent, and 72% of the producers indicated having some level of damage. The producers in the sample had mixed feelings about the damage their crops received with 70% indicating that the damage was either negligible or was tolerable in exchange for having deer around. In South Carolina the increasing deer …


Chloroform Contamination In The Louisville Aquifer: An Investigation Of Its Occurrence And Propagation, Sergio E. Serrano Sep 1993

Chloroform Contamination In The Louisville Aquifer: An Investigation Of Its Occurrence And Propagation, Sergio E. Serrano

KWRRI Research Reports

This report presents the main results of an investigation on the nature and propagation of an accidental spill of chloroform in the Louisville aquifer, Kentucky. Much of the effort is concentrated on the development of mathematical models to either reconstruct the history of evolution of the plume, or forecast its propagation in the future. Chloroform is a dense halogenated solvent which exhibits a special migration pattern in porous media: Because of this and the relative absence of a conceptual theory on its hydrodynamics in porous media, meaningful predictive models will have to deal with many unresolved theoretical aspects of contaminant …


Book Review, Gianna Julian-Arnold Sep 1993

Book Review, Gianna Julian-Arnold

RISK: Health, Safety & Environment (1990-2002)

Review of the book: ENVIRONMENTAL POLITICS: PUBLIC COSTS, PRIVATE REWARDS. (Michael S. Greve & Fred L. Smith, Jr. eds., Praeger 1992) [209 pp.] Acknowledgements, biographical information, figures, foreword by James Q. Wilson, index, notes, selected bibliography, tables. LC 91-44009, ISBN 0-275- 94238-4. [Paper $19.95, cloth $45.00. One Madison Avenue, New York N.Y. 10010.]


Book Review, Angela V. Tafro Sep 1993

Book Review, Angela V. Tafro

RISK: Health, Safety & Environment (1990-2002)

Review of: VICE PRESIDENT AL GORE, EARTH IN THE BALANCE: ECOLOGY AND THE HUMAN SPIRIT. (Plume 1993) [368 pp.] Acknowledgements, bibliography, figures, foreword, illustrations, index, notes. LC 92- 34013; ISBN 0-452-26935-0. [Paper $13.00. 375 Hudson Street, New York NY 10014.]


Schools Respond To Risk Management Programs For Asbestos, Lead In Drinking Water And Radon, Ann Fisher, Lauraine G. Chestnut, Ruth H. Chapman, Robert D. Rowe Sep 1993

Schools Respond To Risk Management Programs For Asbestos, Lead In Drinking Water And Radon, Ann Fisher, Lauraine G. Chestnut, Ruth H. Chapman, Robert D. Rowe

RISK: Health, Safety & Environment (1990-2002)

Based on a study of the three EPA-initiated, public school risk management programs noted in the title, the authors find that state agency involvement is an important factor in the success of such programs. They also find, e.g., that school districts are justifiably reluctant to comply with tentative programs


Epa's Map Of Radon Zones, Nebraska, Sharon W. White, Lisa Ratcliff, Kirk Maconaughey, R. Thomas Peake, Dave Rowson, Steve Page, Linda C. S. Gundersen, R. Randall Schumann, James K. Otton, Doug Owen, Russell Dubiel, Kendell Dickinson, Sandra L. Szarzi Sep 1993

Epa's Map Of Radon Zones, Nebraska, Sharon W. White, Lisa Ratcliff, Kirk Maconaughey, R. Thomas Peake, Dave Rowson, Steve Page, Linda C. S. Gundersen, R. Randall Schumann, James K. Otton, Doug Owen, Russell Dubiel, Kendell Dickinson, Sandra L. Szarzi

United States Environmental Protection Agency: Publications

Sections 307 and 309 of the 1988 Indoor Radon Abatement Act (IRAA) direct EPA to identify areas of the United States that have the potential to produce elevated levels of radon. EPA, the U.S. Geological Survey (USGS), and the Association of, American State Geologists (AASG) have worked closely over the past several years to produce a series of maps and documents which address these directives. The EPA Map of Radon Zones is a compilation of that work and fulfills the requirements of sections 307 and 309 of IRAA. The Map of Radon Zones identifies, on a county-by-county basis, areas of …


Epa's Map Of Radon Zones Nebraska, U.S. Environmental Protection Agency's, U.S. Geological Survey Sep 1993

Epa's Map Of Radon Zones Nebraska, U.S. Environmental Protection Agency's, U.S. Geological Survey

United States Environmental Protection Agency: Publications

Sections 301 and 309 of the 1988 Indoor Radon Abatement Act (IRAA) direct EPA to identify areas of the United States that have the potential to produce elevated levels of radon. EPA, the U.S. Geological Survey (USGS), and the Association of. American State Geologists (AASG) have worked closely over the past several years to produce a series of maps and documents which address these directives. The EPA Map of Radon Zones is a compilation of that work and fulfills the requirements of sections 307 and 309 of IRAA. The Map of Radon" Zones identifies, on a county-by-county basis, areas' of …


Pesticide Use On Broccoli, Cabbage, Cauliflower And Peppers Grown In Connecticut: 1991, James J. Turner Ii, Candace L. Bartholomew Aug 1993

Pesticide Use On Broccoli, Cabbage, Cauliflower And Peppers Grown In Connecticut: 1991, James J. Turner Ii, Candace L. Bartholomew

Storrs Agricultural Experiment Station

No abstract provided.


Variability In Growth And Age Structure Among Populations Of Ribbed Mussels, Geukensia Demissa (Dillwyn) (Bivalvia: Mytilidae), In Jamacia Bay, New York (Gateway Nra), David R. Franz, John Tanacredi Ph.D. Jul 1993

Variability In Growth And Age Structure Among Populations Of Ribbed Mussels, Geukensia Demissa (Dillwyn) (Bivalvia: Mytilidae), In Jamacia Bay, New York (Gateway Nra), David R. Franz, John Tanacredi Ph.D.

Faculty Works: CERCOM (1977-2016)

Growth rates, body weight, density and biomass of ribbed mussels, Geukensia demissa (Dillwyn), were determined at Spartina alterniflora marsh-flat sites in Jamaica Bay, New York (Lower Hudson Estuary). Cumulative growth and annual growth increments varied but rates were lower at sites within the central bay relative to peripheral sites. Local variability both in size at Ring-1 and size-specific annual growth rates probably account for the variability in cumulative length. No pattersn were noted in frequency distributions of shell size but congruence in age structure was observed among neighboring sites in some areas of the bay. Mussel densities were greater within …


Building Community Around Water: The Shift From Icon To Substance In The Local Politics Of Water, Donald Snow Jun 1993

Building Community Around Water: The Shift From Icon To Substance In The Local Politics Of Water, Donald Snow

Water Organizations in a Changing West (Summer Conference, June 14-16)

11 pages.


New Legislative Approaches, Larry Morandi Jun 1993

New Legislative Approaches, Larry Morandi

Water Organizations in a Changing West (Summer Conference, June 14-16)

14 pages.


Water And Communities: Emerging Issues For Water Organizations, A. Lee Brown, Jr. Jun 1993

Water And Communities: Emerging Issues For Water Organizations, A. Lee Brown, Jr.

Water Organizations in a Changing West (Summer Conference, June 14-16)

13 pages.

Contains 2 pages of references.


Watershed Based Initiatives For Water Resource Planning And Management In Washington State, Kenneth O. Slattery Jun 1993

Watershed Based Initiatives For Water Resource Planning And Management In Washington State, Kenneth O. Slattery

Water Organizations in a Changing West (Summer Conference, June 14-16)

16 pages.

Contains references.


Organizing From The Ground Up: Watershed Initiatives: The Recent Truckee River Experience, Robert S. Pelcyger Jun 1993

Organizing From The Ground Up: Watershed Initiatives: The Recent Truckee River Experience, Robert S. Pelcyger

Water Organizations in a Changing West (Summer Conference, June 14-16)

15 pages.


New Legislative Approaches, Laird Noh Jun 1993

New Legislative Approaches, Laird Noh

Water Organizations in a Changing West (Summer Conference, June 14-16)

7 pages.


Programs For Obtaining Future Supplies Of Water For Southern California, Duane L. Georgeson Jun 1993

Programs For Obtaining Future Supplies Of Water For Southern California, Duane L. Georgeson

Water Organizations in a Changing West (Summer Conference, June 14-16)

19 pages (includes map).