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Articles 46201 - 46230 of 52497

Full-Text Articles in Physical Sciences and Mathematics

Characteristics Of Deer Damage To Experimental Orchards In Ohio, Kerry J. Mower, Thomas W. Townsend, William J. Tyznik Feb 1989

Characteristics Of Deer Damage To Experimental Orchards In Ohio, Kerry J. Mower, Thomas W. Townsend, William J. Tyznik

Great Plains Wildlife Damage Control Workshop Proceedings

We measured several variables of newly established apple trees (1) to compare growth differences between trees damaged by browsing deer and trees protected from deer, (2) to determine if seasonal browsing patterns existed, and (3) to determine if deer browsed selectively among Ohio's 3 most commonly planted apple cultivars. All testing was die at the 0.05 alpha level. Experimental trees were measured repeatedly from June 1986 the May 1988.


Management Problems Encountered With Livestock Guarding Dogs On The University Of California, Hopland Field Station, Robert M. Timm, Robert H. Schmidtz Feb 1989

Management Problems Encountered With Livestock Guarding Dogs On The University Of California, Hopland Field Station, Robert M. Timm, Robert H. Schmidtz

Great Plains Wildlife Damage Control Workshop Proceedings

Guard dogs are being promoted and utilized as effective predator damage control tools under a variety of livestock management conditions. We report our experience over 1 1/2 years with 5 dogs, primarily Anatolian shepherd and Akbash dog breeds. We discuss a number of behavioral and management problems we have encountered, some of which have not previously been reported in the literature. These include chasing vehicles and wildlife, predation on deer (Odocoileus hemionus columbianus), and incompatibility of dogs with other predator damage control methods.


The Current Program And Future Of Adc In The Usda, Bobby R. Acord Feb 1989

The Current Program And Future Of Adc In The Usda, Bobby R. Acord

Great Plains Wildlife Damage Control Workshop Proceedings

The ADC program was transferred to the U.S. Department of Agriculture, Animal and Plant Health Inspection Service in December 1985. The ADC mission continues to be the protection of American agriculture and other resources from wildlife damage. Changes have been implemented to enhance the program, and efforts are continuing toward additional improvements.


Kansas Attitudes On Prairie Dog Control, Charles D. Lees, F. Robert Henderson Feb 1989

Kansas Attitudes On Prairie Dog Control, Charles D. Lees, F. Robert Henderson

Great Plains Wildlife Damage Control Workshop Proceedings

In Kansas prairie dog management is primarily determined by private individuals and local government agencies. We conducted a mail survey of 350 affected landowners as a means to evaluate the effectiveness of current prairie dog control. The same survey was also sent to 350 randomly selected state residents within the general prairie dog range. We evaluated people's perceptions of prairie dogs, the effectiveness of control methods, costs of control, and reasons for poor response to control techniques. Results indicate people that have previously been involved in prairie dog control on lands they manage have different opinions about prairie dogs than …


Black-Footed Ferret Recovery, Dean E. Biggins, Ronald A. Crew Feb 1989

Black-Footed Ferret Recovery, Dean E. Biggins, Ronald A. Crew

Great Plains Wildlife Damage Control Workshop Proceedings

The captive population of black-footed ferrets increased from 24 to 58 animals in 1988, and was split to provide the species added protection against extinction. Experimental reintroductions may begin in 1991. In some areas, "experimental population" designations as authorized under Section 10 (j) of the Endangered Species Act may be used to provide wider management latitude. The Black-footed Ferret Interstate Coordinating Committee oversees much of the work related to reintroduction. Expanded effort to locate wild ferrets now includes a $10,000 reward offer. Research focuses on captive breeding, reintroduction techniques, disease, and habitat. A new Recovery Plan was approved in 1988.


Coyote Control In Alberta, John B. Boumez Feb 1989

Coyote Control In Alberta, John B. Boumez

Great Plains Wildlife Damage Control Workshop Proceedings

A historical review of coyote damage to livestock, early control measures and the development of Alberta's coyote damage control program is provided, including provincial and federal legislation, provincial policy, research and field testing initiatives, extension and control methodology.


An Assessment Of The Urban Wildlife Problem, William D. Fitzwater Feb 1989

An Assessment Of The Urban Wildlife Problem, William D. Fitzwater

Great Plains Wildlife Damage Control Workshop Proceedings

Basic urban wildlife problems include: proper identification of species, shift from agrarian to urban society, different interpretations of humaneness, compassion for individual rather than a population as a whole, and public ignorance of urban pest management. Positive values are esthetics and environmental education opportunities. Negative values are disease transmission, life/injury-threatening situations, damage to buildings/other property, water structures/quality, petty annoyances, and indirect economics.


Aphis Animal Damage Control Livestock Guarding Dog Program, Jeffrey S. Green Feb 1989

Aphis Animal Damage Control Livestock Guarding Dog Program, Jeffrey S. Green

Great Plains Wildlife Damage Control Workshop Proceedings

One hundred traditional breed livestock guarding dog pups were placed with sheep producers in Wyoming, Idaho, Oregon, and Washington during 1987-88 as part of the APHIS Animal Damage Control program. Producers reared the dogs and integrated them into their operations. Ninety-three dogs were rated as follows: 68% good, 17% fair, and 15$ poor. Success was breed-related. Sixty-one percent of the dogs were used on pasture operations and 39% on range operations. Nineteen percent of the dogs died prior to reaching 18 months-of-age.


Estimating Domestic Sheep Losses To Mountain Lions, Frederick G. Lindzey, Connie Wilbur Feb 1989

Estimating Domestic Sheep Losses To Mountain Lions, Frederick G. Lindzey, Connie Wilbur

Great Plains Wildlife Damage Control Workshop Proceedings

Large, native-range pastures were searched for dead domestic sheep in the Southern Bighorn Mountains of Wyoming. The proportion of dead sheep that had been killed by mountain lions was 23%. Search methods, however, resulted in unequal probabilities of finding sheep that were killed by mountain lions and sheep that died of other causes.


Habitat Manipulations To Prevent Elk Damage To Private Rangelands, William M. Long Feb 1989

Habitat Manipulations To Prevent Elk Damage To Private Rangelands, William M. Long

Great Plains Wildlife Damage Control Workshop Proceedings

Habitat manipulations were initiated on the Wick Brothers big Game Winter range in southern Wyoming to alter traditional movement patterns of Rocky Mountain Elk (Cervus elaphus nelsonii) . Manipulations included spraying with 2-4-D and follow-up fertilization of the same plot in successive years with ammonium nitrate at the rate of 40 lbs. (18 kg.) free nitrogen per acre. Burning hay meadows and upland sagebrush sites and salting were used in combination with the other treatments. Elk distribution shifted to the treated plots in response to the increased quality and quantity of the grass production on these areas. Spring …


Seasonal Effects On Control Methods For The Great-Tailed Grackle, John H. Rappole, Wan R. Tipton, Arlo H. Kane, Rafael H. Flores, John Hobbs, Joe Palacios Feb 1989

Seasonal Effects On Control Methods For The Great-Tailed Grackle, John H. Rappole, Wan R. Tipton, Arlo H. Kane, Rafael H. Flores, John Hobbs, Joe Palacios

Great Plains Wildlife Damage Control Workshop Proceedings

Efficiency of methods used to control damage to citrus fruit by great-tailed grackles was found to vary considerably from season to season. From April - July, the birds congregated in small breeding colonies where they were susceptible to baiting and poisoning. From August - October, the birds could be baited in to and poisoned at watering sites. Intensive shooting and use of pyrotechnics were also used successfully at this time of year to control damage at groves with high grackle concentrations. From late October - March, birds moved over wide areas each day, and were easily frightened from groves by …


Effects Of Grackle Damage Control Techniques In Citrus On Nesting Success Of Non-Target Species, John H. Rappole, Wan R. Tipton, Arlo H. Kane, Rafael H. Flores Feb 1989

Effects Of Grackle Damage Control Techniques In Citrus On Nesting Success Of Non-Target Species, John H. Rappole, Wan R. Tipton, Arlo H. Kane, Rafael H. Flores

Great Plains Wildlife Damage Control Workshop Proceedings

Several techniques were tested to reduce the damage caused by great-tailed grackles to citrus in the lower Rio Grande Valley of southern Texas: monofilament line, eyespot balloons, pyrotechnics, and grackle nest removal. Ten species were found nesting in the treated groves, but only the mourning dove, white-winged dove, and great-tailed grackle in significant numbers. Nesting success was not reduced significantly by any treatment but observations indicate that cannon treatments are likely to have a negative impact on overall nesting success for several species.


Controlling Raccoon Damage In Urban Areas, David G. Riley Feb 1989

Controlling Raccoon Damage In Urban Areas, David G. Riley

Great Plains Wildlife Damage Control Workshop Proceedings

Raccoons have become a serious problem in many urban and suburban areas. Damage to homes and buildings as well as the spread of diseases to pets are constant problems when high raccoon populations occur. Various control methods can be implemented with positive results.


Use Of Drc-1339 And Pa-14 To Control Grackle Populations In The Lower Rio Grande Valley, Alan R. Tipton, John H. Rappole, Arlo H. Kane, Rafael H. Flores, John Hobbs, Dave Johnson, Sam Beasom Feb 1989

Use Of Drc-1339 And Pa-14 To Control Grackle Populations In The Lower Rio Grande Valley, Alan R. Tipton, John H. Rappole, Arlo H. Kane, Rafael H. Flores, John Hobbs, Dave Johnson, Sam Beasom

Great Plains Wildlife Damage Control Workshop Proceedings

In an attempt to reduce valley wide populations of grackles in the Rio Grande Valley of South Texas, PA-14 was sprayed over a staging area where as many as 10,000 birds were located. This attempt was unsuccessful and this method of population reduction was deemed not suitable for south Texas. Dog food bait was treated with DRC-1339 and presented to great-tailed grackles in several different situations in an attempt to control depredations to citrus by this bird. Bait presented in feedlots during winter (Nov-Feb) was readily taken by the birds, resulting in a significant reduction of numbers of birds visiting …


Use Of Monofilament Line, Reflective Tape, Beach-Balls, And Pyrotechnics For Controlling Grackle Damage To Citrus, Alan R. Tipton, John H. Rappole, Arlo H. Kane, Rafael H. Flores, Dave Johnson, John Hobbs, Paul Schulz, Sam Beasom, Joe Palacios Feb 1989

Use Of Monofilament Line, Reflective Tape, Beach-Balls, And Pyrotechnics For Controlling Grackle Damage To Citrus, Alan R. Tipton, John H. Rappole, Arlo H. Kane, Rafael H. Flores, Dave Johnson, John Hobbs, Paul Schulz, Sam Beasom, Joe Palacios

Great Plains Wildlife Damage Control Workshop Proceedings

The effectiveness of monofilament line, reflective tape, beach-balls and pyrotechnics (propane cannons and shotgun scare shells) in reducing damage to citrus by great-tailed grackles was tested in the lower Rio Grande Valley of southern Texas. Results indicate that these treatments can produce reduction in damage. Whether the treatments are economically advisable for a grower depends on the history of grackle damage to the grove and grove size. Only large amounts of damage in large groves justify costs associated with implementation of these methods.


Field Trials Of Alpha-Chloralose And Drc-1339 For Reducing Numbers Of Herring Gulls, Paul P. Woronecki, Richard A. Dolbeer, Thomas W. Seamans Feb 1989

Field Trials Of Alpha-Chloralose And Drc-1339 For Reducing Numbers Of Herring Gulls, Paul P. Woronecki, Richard A. Dolbeer, Thomas W. Seamans

Great Plains Wildlife Damage Control Workshop Proceedings

We compared the potential of Alpha-chloralose (A-C) and DRC-1339 to reduce a nesting population of herring gulls at an industrial site in Ohio in 1988. Almost all treated baits were consumed by gulls but only about one affected gull was noted for every 10 baits consumed of either chemical. A test indicated our DRC-1339 baits. containing 3.7 - 7.4 times the published LD value, were not lethal to most captive herring gulls living in fresh water. LD values of A-C and DRC-1339 need to be more precisely estimated for gull species in fresh and salt water environments.


Fall Food Habits Of Double-Crested Cormorants In Arkansas, Albert E. Bivings, Michael D. Hoy, Jeffrey W. Jones Feb 1989

Fall Food Habits Of Double-Crested Cormorants In Arkansas, Albert E. Bivings, Michael D. Hoy, Jeffrey W. Jones

Great Plains Wildlife Damage Control Workshop Proceedings

One hundred forty-eight double-crested cormorants (Phalacrocorax auritus) were collected in October-December 1988. Some were collected while actively feeding, but most were collected at loafing or roosting areas. Of the 135 with fish in them, 79% contained gizzard shad (Dorosoma cepedianum) and 16% contained centrarchids (mostly Lepomus sp.). The rest contained a variety of aquaculture (commercially raised) fish. Fish prey weights were estimated from total length of prey items and use of published length-weight tables. Total weights of prey ranged from 39 to 4558 with a mean of 185g. This was felt to be a conservative estimate …


Planning For Animal Damage Control Programs Within The Animal And Plant Health Inspection Service, Philip S. Gipson, Gary P. Combs Feb 1989

Planning For Animal Damage Control Programs Within The Animal And Plant Health Inspection Service, Philip S. Gipson, Gary P. Combs

Great Plains Wildlife Damage Control Workshop Proceedings

The Animal Damage Control Unit (ADC) and the 10 other units of the Animal and Plant Health Inspection Service (APHIS) have undergone major reorganization. Emphasis is placed on planning and risk analysis. Four levels of planning have been identified: (1) strategic planning for the Agency, (2) strategic planning for each of the 11 units, (3) program design and risk analysis, and (4) operational planning.


Recent Geologic History Of Mud-Dominated Sediments In Hillsborough Bay, Florida - Phase I Report, Gregg R. Brooks, Larry J. Doyle Feb 1989

Recent Geologic History Of Mud-Dominated Sediments In Hillsborough Bay, Florida - Phase I Report, Gregg R. Brooks, Larry J. Doyle

Reports

The primary objective of this project, one phase of a potentially larger investigation on sediments of Hillsborough Bay, was to determine vertical distribution patterns of mud-dominated sediments. Vertical distribution patterns represent the recent geologic history of the study area. For this project the term 'recent geologic history' refers to the past several thousand years, or the period since being flooded by the Holocene rise of sea level.


Management Of The South-West Inshore Trawl Fishery., N. Moore Feb 1989

Management Of The South-West Inshore Trawl Fishery., N. Moore

Fisheries management papers

This report outlines the management plan for the south west inshore trawl fishery which already operates in coastal waters less than 200 metres deep between Guilderton and Cape Leeuwin. This management plan takes into account these important concerns and has specifically set aside a strip of coastal area from Cape Bouvard to Cape Leeuwin for recreational usage and for protection of the benthic community, and closed the management zone north of Burns Beach to trawling.


The Probe, Issue 90 - February 1989 Feb 1989

The Probe, Issue 90 - February 1989

The Probe: Newsletter of the National Animal Damage Control Association

THE PROBE
National Animal Damage Control Association
FEBRUARY 1989
The Innocence of Deer
Euthanizing Cats
Personnel
Letters to Ye Ed
Squirrels & Gopher Bites
Animal Rights Movement
Animals Used in Science and Research


Prevalence Of The Major Oyster Diseases In Virginia Waters 1988 A Summary Of The Annual Monitoring Program., Eugene M. Burreson Feb 1989

Prevalence Of The Major Oyster Diseases In Virginia Waters 1988 A Summary Of The Annual Monitoring Program., Eugene M. Burreson

Reports

No abstract provided.


Water Resources Review - February 1989, Annis Water Resources Institute Feb 1989

Water Resources Review - February 1989, Annis Water Resources Institute

AWRI Reviews

No abstract provided.


Environmental Assessment In Bioethanol Technology Using Immobilized Yeast Cells, Minoo Kandy Zarnegar Jan 1989

Environmental Assessment In Bioethanol Technology Using Immobilized Yeast Cells, Minoo Kandy Zarnegar

Theses

This study is undertaken from the standpoint of water pollution evaluation in bioethanol technology, using immobilized yeast cells. Evaluation of water pollution caused by immobilized yeast fermentation is the main objective of this research.

The pollution in water remaining at the end of ethanol production, which is normally discharged in the wastewater stream, has been analyzed by the measurement of biological oxygen demand (BOD), since BOD measurement is one of the widely used parameters for water pollution evaluation. BOD obtained from produced water (stillage) was between the range of 115- 360 mg/l. The variation in BOD depended upon the removal …


Biochemical And Morphological Characteristics In Maturing Achenes From Purple-Hulled And Oilseed Sunflower Cultivars, Roger W. Bullard, Paul P. Woronecki, Richard A. Dolbeer, J. Russell Mason Jan 1989

Biochemical And Morphological Characteristics In Maturing Achenes From Purple-Hulled And Oilseed Sunflower Cultivars, Roger W. Bullard, Paul P. Woronecki, Richard A. Dolbeer, J. Russell Mason

United States Department of Agriculture Wildlife Services: Staff Publications

The blackbird feeding preference for sunflower oilseed variety Jacques Discovery (JD) over purple-hulled Neagra de Cluj (NdC) has been attributed to anthocyanin. To test this hypothesis, we compared biochemical and morphological properties in the achene over the maturation period. Comparisons included total phenols, anthocyanin, tannin, fat/oil, protein, nonstructural sugars, and phytomelanin contents, as well as mass properties and moisture content. Only three differences were observed: (1) Hull mass was significantly higher for NdC than JD. (2) Anthocyanins were synthesized by NdC only. (3) JD was higher in oil content. Each of these factors may play a role in reduced preferences …


The Use Of Banding Recovery Data To Estimate Dispersal Rates And Gene Flow In Avian Species: Case Studies In The Red-Winged Blackbird And Common Grackle , William S. Moore, Richard A. Dolbeer Jan 1989

The Use Of Banding Recovery Data To Estimate Dispersal Rates And Gene Flow In Avian Species: Case Studies In The Red-Winged Blackbird And Common Grackle , William S. Moore, Richard A. Dolbeer

United States Department of Agriculture Wildlife Services: Staff Publications

Dispersal resulting in gene flow strongly affects the evolution of genetic structure in populations. This report describes statistical estimators of dispersal parameters based on USFWS banding recovery records. Finite-area studies of avian species yield estimates of root-mean-square (RMS) dispersal along a transect of about 1 km per generation. In contrast, estimates of RMS dispersal for the Red-winged Blackbird (Agelaiusp hoeniceus) and Common Grackle (Ouiscalus auiscula), based on USFWS banding recovery records, are 94.6 and 111.4 km per generation, respectively. Distributions for both species are extremely leptokurtic, and confidence intervals based on jackknife statistics are large because the estimators are sensitive …


Kepone And The James River, Robert J. Huggett Jan 1989

Kepone And The James River, Robert J. Huggett

VIMS Books and Book Chapters

The James River in Virginia was contaminated by the pesticide kepone when the material entered the river as early as 1968 and continued until its discovery in 1975. The river became so contaminated that commercial fisheries were closed. In 1988, 13 years after closure, all fishing restrictions were lifted. The contaminated sediments have been diluted and covered enough by uncontaminated material that the kepone flux back into the water column has diminished. Kepone concentrations in organisms inhabitating the river are finally below the U.S. Environmental Protection Agency and Food and Drug Administration action levels. Biological, chemical, physical and geological aspects …


A Student Handbook For The Environmental Education / Outdoor School Program In The Middle School, Robert Charles Kenck Jr. Jan 1989

A Student Handbook For The Environmental Education / Outdoor School Program In The Middle School, Robert Charles Kenck Jr.

All Graduate Projects

The purpose of this project was to develop a student handbook that can be used from the onset of an environmental study through the inter-active field study. Students will use the handbook as they begin to study environmental education in the classroom. The handbook will continue to be used as each student attends a three day outdoor school to study firsthand their environment through field activities. The handbook will remain the property of the students.


Protected Species – Research Permits And The Value Of Basic Research, Katherine Ralls, Robert L. Brownell Jr. Jan 1989

Protected Species – Research Permits And The Value Of Basic Research, Katherine Ralls, Robert L. Brownell Jr.

United States Department of Commerce: Staff Publications

The complexities involved in obtaining permits for field research using protected species continue to increase. In October 1988, Congress amended the Marine Mammal Protection Act (MMPA) to increase the documentation required to obtain a scientific research permit (PL 100-711). Applicants for scientific research permits must now submit “information indicating that the taking is required to further a bona fide scientific purpose and does not involve unnecessary duplication of research.”


The Plight Of The ‘Forgotten’ Whales, Robert L. Brownell Jr., Katherine Ralls, William F. Perrin Jan 1989

The Plight Of The ‘Forgotten’ Whales, Robert L. Brownell Jr., Katherine Ralls, William F. Perrin

United States Department of Commerce: Staff Publications

The “Save the Whales” movement, the most successful wildlife crusade in history, has greatly influenced government policies in a number of countries, including the United States. Thanks in large part to the movement’s dedicated members, the fight to save the great whales has been largely won. Yet all but ignored in this victory has been the plight of smaller cetaceans, which continues to worsen.