Physical Sciences and Mathematics Commons^™

Effects Of Coyote Control On Their Prey: A Review, Scott E. Henke

Coyotes in the Southwest: A Compendium of Our Knowledge (Symposium Proceedings, 1995)

Coyotes (Canis latrans) are often removed from an area because of their predatory nature, regardless of the effect such removal may have on the ecosystem. Research results concerning ecosystem changes due to coyote removal appear ambiguous; however, differing lengths of coyote control can produce different results. Short-term coyote removal efforts (≤ 6 months) typically have not resulted in increases in the prey base; however, long-term, intensive coyote removal reportedly has altered to alter species composition within the ecosystem.

Coyotes: A Sheep And Goat Rancher's Perspective, Ellis Helmers

Coyotes in the Southwest: A Compendium of Our Knowledge (Symposium Proceedings, 1995)

When asked their views about coyotes and coyote damage, the words used by producers to describe their perspectives and comments are less than kind. It is difficult for a producer to find anything good to say about an animal that has cost him so much.

Techniques For Estimating Coyote Abundance, Scott E. Henke, Fred F. Knowlton

Coyotes in the Southwest: A Compendium of Our Knowledge (Symposium Proceedings, 1995)

Knowledge of coyote abundance is needed to make intelligent management decisions Several methods have been devised to enumerate coyote (Canis latrans) population size. We review several techniques and attempt to identify biases associated with each method. Once biases are understood, recommendations can be made to minimize their impact on data collection processes and yield better estimates of coyote population trends.

Prescribed Coyote Control To Develop An “Open Window Policy” For Enhancing Deer Survival, Tommy L. Hailey

Coyotes in the Southwest: A Compendium of Our Knowledge (Symposium Proceedings, 1995)

Management of white-tailed deer (Odocoileus virginianus) holds a high priority on many Texas ranches today The use of “prescribed aerial control” of coyotes to increase white-tailed deer productivity may provide wildlife managers with an economical management tool. I describe two case studies of ranches in the Lower Rolling Plains where prescribed coyote control has increased the deer herds.

Estimating Livestock Losses, Charles Drain

Coyotes in the Southwest: A Compendium of Our Knowledge (Symposium Proceedings, 1995)

Most information published by the Texas Agricultural Statistics Service (TASS) is based on data gathered through a system of Sample Surveys. TASS regularly surveys sampled farms and ranches and agricultural businesses m order to make statistical inference (estimates) for a total population. The alternative to using a sample survey would be to make a complete enumeration or count of the entire population. Both cost and timely results favor the survey approach. This discussion is an attempt to explain the concepts and sampling methods TASS employs in conducting basic surveys, for both inventory and death loss data for cattle, sheep and …

Lethal Options For Controlling Coyotes, John W. Dorsett

Coyotes in the Southwest: A Compendium of Our Knowledge (Symposium Proceedings, 1995)

Lethal control methods are required to stop coyote depredation or to reduce the coyote population in an area. Various lethal control options are available, including traps, snares, shooting, denning and toxicants. The effectiveness, selectivity, and specificity of each method should be considered before being utilized. Each method requires varying degrees of skill and experience to be made effective. Usually a combination of control methods is most effective in coyote control situations.

The Effects Of Control On Coyote Populations: Another Look, Guy E. Connolly

Coyotes in the Southwest: A Compendium of Our Knowledge (Symposium Proceedings, 1995)

Population dynamics models are useful for estimating coyote (Canis latrans) population responses to exploitation w well as to hypothetical birth intervention techniques At least 6 coyote simulation models have been developed over the past 25 years. This paper reviews the model developed by Connolly and Longhurst (1975), and identifies some potential improvements based upon new biological information and modem computing technology. The biological concepts embodied in the Connolly-Longhurst (C-L) model seem as valid In 1995 as they were in 1975. Newer studies have tended to reaffirm rather than revise earlier concepts of coyote population mechanics. One significant shortcoming …

The Coyote's Role In A Rabies Epizootic, Keith A. Clark, Pamela J. Wilson

Coyotes in the Southwest: A Compendium of Our Knowledge (Symposium Proceedings, 1995)

In 1994, the canine rabies epizootic in South Texas was declared a state health emergency; a statewide rabies quarantine was enacted in 1995. Prior to 1988, rabid coyotes (Canis latrans) were reported only infrequently in Texas. In 1988, Stan and Hidalgo Counties, located In extreme South Texas, experienced an epizootic of canine rabies resulting in 11 laboratory-confirmed cases of canine rabies in domestic dogs and 6 cases in coyotes. By 1991, the epizootic had expanded approximately 100 miles north of the US-Mexico border and included 10 counties. During the next 3 % years, 10 additional counties became involved …

Predation Impacts And Management Strategies For Reducing Coyote Damage To Cattle, Rickey L. Gilliland

Coyotes in the Southwest: A Compendium of Our Knowledge (Symposium Proceedings, 1995)

Loss of cattle to predators influences productivity of many livestock operations. Statistics indicate that coyote (Canis latrans) predation is a principle threat. Impacts to livestock resources by coyotes are appraised. Implementation of control strategies which capitalize on coyote dispersion and social interactions are discussed. Predator management to reduce livestock losses and promote a younger age structure in coyotes is suggested as a long term solution.

Interpreting Physical Evidence Of Coyote Predation, James E. Bowns

Coyotes in the Southwest: A Compendium of Our Knowledge (Symposium Proceedings, 1995)

There are situations where it is necessary to determine the cause of death of livestock, game animals, or other wildlife. Criteria used for recognizing predator kills are well known and scientifically documented. These criteria include the attack, killing and feeding behavior of predators as well as the characteristics of their tracks, droppings, and canine teeth size and spacing. Diagnostic criteria for recognizing coyote (Canis latrans), domestic dog, fox (Urocyon cinereoargenteus, Vulpes vulpes), cougar (Felis concolor) , bobcat (Lynx rufus), bear (Ursus spp ), and eagle (mostly Aquila chrysaetos) predation are …

Coyote Interactions With Other Carnivores, Terry L. Blakenship

Coyotes in the Southwest: A Compendium of Our Knowledge (Symposium Proceedings, 1995)

Coyotes (Canis latrans) occur sympatrically with several predators throughout their range. Habitat and food resources are similar, although the coyote typically utilizes a wider range of food items. Larger predators generally select larger prey, allowing predators of different sizes to coexist. Coyotes exhibit aggressive actions towards smaller predators, but in most cases they avoid contact with other predator species. Studies indicate that coyotes can exclude 01- displace foxes (Vulpes vulpes, Urocyon spp.), and an inverse relationship exists between abundance of coyotes and foxes. There is evidence suggesting that extensive reduction of coyote populations allows other predator populations …

The Coyote, Baxter Black

Coyotes in the Southwest: A Compendium of Our Knowledge (Symposium Proceedings, 1995)

I think I can speak for the coyote
With more understanding than most
Especially those who defend him
And live on the New Jersey coast

Selected Parameters Of The Reproductive Physiology And Endocrinology Of Coyotes, Max S. Amoss Jr., Connie M. Hodges

Coyotes in the Southwest: A Compendium of Our Knowledge (Symposium Proceedings, 1995)

The development of the reproductive system and the dynamics of reproductive hormones were studied in captive male and female coyotes (Canis latrans). Captive male coyotes exhibited incomplete sexual maturation at the first reproductive season (< 12 months of age). Peak serum testosterone levels in 1 -year old males were 50% (300±200 vs. 810±300 pg testosterone/ml) and total sperm production was only 10% (57.4±6.6 vs. 558.8±26 x 10⁶ total sperm) of that observed in males older than 1 year. Yearling males were never observed copulating with a female. The sexual maturation of captive female coyotes was less equivocal than their male counterpart's. The pregnancy rate of yearling females was 40% compared to 63% m older females. Average peak serum LH values at the ovulatory surge were 33 ng/ml in yearling …

Behavior Of Coyotes In Texas, William F. Andelt

Coyotes in the Southwest: A Compendium of Our Knowledge (Symposium Proceedings, 1995)

Coyotes (Canis latrans) live in social groups with relatively small territories or as single, non-territorial transients with large home ranges in southern Texas. Coyotes communicate and establish territories through auditory, olfactory, and visual means They consume mammals, fruits, and insects with their diets reflecting difference sin abundance and vulnerability of prey, effects of plant phenology and weather conditions. Coyotes have adapted to human exploration by avoiding humans and their control techniques. Because coyotes habituate to nonlethal control techniques (e.g., frightening devices), I suggest apply frightening devices only when coyotes are a problem. Lethal techniques likely will be most …

Resource Law Notes Newsletter, No. 34, Spring Issue, Apr. 1995, University Of Colorado Boulder. Natural Resources Law Center

Resource Law Notes: The Newsletter of the Natural Resources Law Center (1984-2002)

No abstract provided.

The Probe, Issue 153 – April 1995

The Probe: Newsletter of the National Animal Damage Control Association

Getting to Know Coyotes Better: The Predator Ecology Project -- Katherine Vaughn
Book Review - "How to Start and Operate a Humane Wild Stray Cat Trapping Business -- Stephen Vantassel
Finally-A Solution to Bird Problems: A food grade ingredient well known to us from the grape-flavored bubble gum and some perfumes has found still another use. The chemical, methyl anthranilate (MA), which is found in concord grapes, has the unique ability to repel birds.
The Connecticut Nuisance Wildlife Control Operators Association (CNWOA) is the first Affiliate Chapter of NADCA
Trapping Weasels -- James Forbes, NADCA President
NADCA Annual Meeting to …

The Planet, 1995, Spring, Darren Nienaber, Huxley College Of The Environment, Western Washington University

The Planet

No abstract provided.

Huxley College Alumni News, 1995, April, Huxley College Of The Environment, Western Washington University

Historical Collection of Huxley Newsletters

No abstract provided.

Coyotes: A Hunter's Perspective, Gerald Stewart

Coyotes in the Southwest: A Compendium of Our Knowledge (Symposium Proceedings, 1995)

The challenge and thrill of recreational hunting for coyotes (Canis latrans) has increased greatly over the last 20 years. The popularity of calling coyotes especially is increasing east of the Mississippi River as coyote populations continue to increase their range and abundance in that area.

Coyote Population Processes Revisited, Frederick F. Knowlton, Eric M. Gese

Coyotes in the Southwest: A Compendium of Our Knowledge (Symposium Proceedings, 1995)

It appears that coyote (Canis latrans) abundance is determined primarily by availability of food (prey) as mediated through social dominance hierarchies and a territorial land tenure system. This is reflected in rates of reproduction, dispersal, and mortality, with survival of juveniles a major factor. Suggestions for a new generation of simulation models to explore coyote population functions are included.

Coyotes And Upland Gamebirds, Fred S. Guthrey

Coyotes in the Southwest: A Compendium of Our Knowledge (Symposium Proceedings, 1995)

That coyotes (Canis latrans) destroy nests and individuals of bobwhites (Colinus virginianus) and wild turkeys (Meleagris gallopavo) is well documented. In many situations, however, the removal of coyotes would have little observable effect on gamebird recruitment and population dynamics. This counterintuitive result occurs because (1) renesting reduces the hen failure rate and (2) loss sources other than coyotes become stronger when coyotes are removed from a predator-prey system.

Coyotes As Part Of Texas' Fur Trade, Jerry L. Cooke

Coyotes in the Southwest: A Compendium of Our Knowledge (Symposium Proceedings, 1995)

One factor that potentially affects coyote (Canis latrans) abundance is recreational and commercial trapping for harvest of coyote fur. Herein I report how the economic impact of coyote pelts has changed from 1979-94 for landowners and trappers from the Texas. Pelt values accounted for over 50% of the variability observed during this 15-year period. The future of this economic incentive for managing coyotes is questionable because of the impending ban by the European Union of furs from North America.

Management Of Coyotes For Pronghorn?, S. Kemble Canon

Coyotes in the Southwest: A Compendium of Our Knowledge (Symposium Proceedings, 1995)

Coyotes (Canis latrans) and pronghorn (Antilocapra americana) have co-existed for thousands of years, but in today's production-oriented society the Pronghorn may need some help periodically. Although pronghorn numbers have rebounded dramatically since the early 20th century, continued management of this species is necessary and may include "management" of its primarily predator, the coyote. Pronghorn defense mechanisms offer protection from predators, but the coyote's hunting strategies overcome these mechanisms The Trans-Pecos region of Texas holds the greatest numbers of pronghorn In the state. Ranchers in the Trans-Pecos can use predators, such as rainfall; strategies, such as proper …

Audubon's Perspective On Coyotes, Dede Armentrout

Coyotes in the Southwest: A Compendium of Our Knowledge (Symposium Proceedings, 1995)

Audubon has a membership which probably spans all views of coyotes (Canis latrans) Audubon's staff views coyotes as biologically appropriate predators in most of the Southwest. We believe that they can be an asset to a well-managed ranch, but that they can also cause localized depredation which must be answered.

Our members value predators, including coyotes, for then- natural role in ecological systems, including their influence on prey species. Many of our members travel broadly and spend money to view wildlife, and consider it a treat to see and hear coyotes.

Sprinkler Irrigation: A Volatile Organic Compound Remediation Alternative, Roy F. Spalding, Mark E. Burbach, Mary Exner Spalding, Leyla Parra-Vicary, Dennis R. Alexander

Nebraska Water Center: Faculty Publications

Sprinkler irrigation has the potential not only to cheaply and effectively remove volatile organic compounds (VOCs) from contaminated ground water but also use the water beneficially and eliminate the costly disposal of both the remediated water and the contaminants. Removal of VOCs from water involves volatilization, which releases the VOCs from the liquid phase to the gaseous phase.

A conventionally designed sprinkler irrigation system was tested near Hastings, Nebraska, to assess its efficacy for removing VOCs in pumped ground water. VOCs in the ground water include 7,1,2-trichloroethylene( TCE), ethylene dibromide (EDB), 1,1,1-trichloroethane (TCA), and carbon tetrachloride (CT). Factors possibly influencing …

The Urban Stormwater Contribution Of Dissolved Trace Metals From The North Floodway Channel, Albuquerque, Nm To The Rio Grande, A. Kyle Harwood

Water Resources Professional Project Reports

The quality and quantity of stormwater from urban areas is now recognized as an important element of pollution management and watershed health. A framework of federal, state and local regulations seeks to manage the impact of urban stormwater from the North Floodway Channel, Albuquerque, New Mexico, on the receiving waters of the Rio Grande. The July 1995, scheduled issuance of a National Pollutant Discharge Elimination System (NPDES) permit for Albuquerque's stormwater discharge is placed in the context of New Mexico surface water quality regulation. Annual and event loadings are calculated for the contribution of three trace metals, including dissolved aluminum, …

John Muir Newsletter, Spring 1995, John Muir Center For Regional Studies

Muir Center Newsletters (1981-2015)

John Muir Newsletter spring 1995 university of the pacific volume 5, number 2 JOHN MUIR AND ZEN BUDDHISM by Michelle L. Dwyer (Editor's note: Michelle Dwyer is an English and Philosophy double major at the University of the Pacific. This paper was prepared in the fall of 1994 for an undergraduate course, "John Muir and the American Environment. ") Many question whether John Muir followed traditional Christianity, mystic pantheism, ora combination of the two. After reading many of Muir's writings, it seems to me that he follows the religious beliefs of Zen Buddhism closely enough to say that Muir understood …

The Study Of Yucca Mountain For A Possible Nuclear Storage Facility Science Vs. Politics, Anna Leske

UNLV Theses, Dissertations, Professional Papers, and Capstones

The purpose of this paper is to determine whether scientific or political methods were used by the of the United States Congress in the study of the nuclear waste storage facility in Yucca Mountain, Nevada. The history nuclear power and the history of the Johnston compromise that lead to the elimination of Texas and Washington States as possible sites for the repository is explained. A review of the conflicts between Nevada politicians and the U.S. Congress over the designation of Yucca Mountain as the sole study for a permanent storage site of the nation's high-level nuclear waste is addressed along …

Limiting Growth In Las Vegas - A Necessary Growth Strategy For The Twenty-First Century, Cheryl Ann Frassa

UNLV Theses, Dissertations, Professional Papers, and Capstones

Land development in the Las Vegas Valley continues at an unprecedented rate and future growth will no doubt be strongly advocated. Yet, water resources in this desert area are finite, and in the near future, supply will fall short of demand. Plans are underway to supplement the existing supply, and proposals to secure additional sources are under investigation. But there are no guarantees these ambitious endeavors will materialize. In light of the pending water crisis, the pervasive "growth at all cost" policies now dominant in the valley must be abandoned and more realistic land-use policies developed; ones based on the …

Updating The Colorado River Compact, Jeffrey A. Freer

UNLV Theses, Dissertations, Professional Papers, and Capstones

Water is essential to life in the arid environment of the western United States. For centuries, humans have used the Colorado River to fulfill their needs and until the past 100 years, the use of the river was sustainable. Over the last 100 years, the Colorado River has been dammed and diverted to "reclaim" the arid west for man's use. In 1946, a Department of the Interior report stated that "Tomorrow the Colorado will be utilized to the very last drop. Its water will convert thousands of additional acres of sagebrush desert to flourishing farms and beautiful homes for servicemen, …