Digital Commons Network^™

The Endangered Species Act And Private Landowner Incentives, Jeffrey A. Michael

Human Conflicts with Wildlife: 2002 Symposium

While intended to increase the habitat available to endangered species, the restrictions of the Endangered Species Act (ESA) increase the costs of harboring an endangered species to private landowners and create incentives for private landowners to reduce habitat. This paper illustrates the incentive for habitat destruction with a simple model of private land use under the ESA, and uses it to predict the effects of changes in policy or biological conditions on private landowner incentives. Many anecdotal accounts and recent empirical research support the predictions of the model. Because of the ESA’s perverse incentives, many have proposed replacing the punitive …

Impacts Of House Mice On Crops In Australia: Costs And Damage, Peter R. Brown, Grant R. Singleton

Human Conflicts with Wildlife: 2002 Symposium

Rodents cause serious losses to crops in many different parts of the world. The house mouse (Mus domesticus, Schwarz and Schwarz 1943) is a serious pest to agriculture in Australia. The impacts of house mouse damage to crops in Australia were examined. Plagues of mice (> 1,000 mice/ha) cause enormous economic and social stress to rural communities in Australia. The mouse plague in 1993/94 caused about US$60 million in damage to crops, intensive livestock industries, and rural communities. The impact of mouse plagues is generally well understood, but there is a dearth of knowledge about the relationship between …

Development Of A Model To Assess Rodent Control In Swine Facilities, Kurt C. Vercauteren, Scott E. Hygnstrom, Robert M. Timm, Robert M. Corrigan, John Beller, Larry L. Bitney, Michael C. Brumm, Daniel Meyer, Dallas R. Virchow, Robert W. Wills

Human Conflicts with Wildlife: 2002 Symposium

At the request, and with the support, of the National Pork Producers Council we are conducting a comprehensive economic analysis of rodent control in swine production facilities. The authors represent an interdisciplinary working group that has been assembled to identify all necessary input variables and values associated with rodent damage and control. The working group consists of specialists in swine production, facilities management, agricultural economics, swine health, rodent control, the pest management industry, systems modeling, and distance education. We incorporated data from the scientific literature and personal experience into an interactive STELLA systems model. The model generates benefit-cost analyses and …

Using Bioeconomic Models To Maximize Benefits From Vertebrate Pest Control: Lamb Predation By Feral Pigs, David Choquenot, Jim Hone

Human Conflicts with Wildlife: 2002 Symposium

The question “When should investment in pest control stop?” either explicitly or implicitly underpins decisions concerning pest control made at every level of enterprise or government, regardless of whether these decisions are tactical or strategic. Bioeconomic modeling provides a quantitative framework for considering the benefits and costs of alternative pest control strategies. In this case study, we develop 3 bioeconomic models that examine strategies based on helicopter shooting and 1080 poisoning, for reducing feral pig (Sus scrofa) predation of newborn lambs in wool-growing enterprises located in Australia’s rangelands. In the first model, marginal analysis indicated that helicopter shooting …

Economics Of Predation Management In Relation To Agriculture, Wildlife, And Human Health And Safety, Michael J. Bodenchuk, J. Russell Mason, William C. Pitt

Human Conflicts with Wildlife: 2002 Symposium

Predation management is controversial and much recent debate has focused on the cost of management efforts. This manuscript considers the cost of predators to agriculture, big game or threatened and endangered species management, and human health and safety. Subsequently, the cost of efforts to manage predation in these contexts is discussed, and benefit:cost ratios are calculated. When properly applied, predation management shows benefit:cost ratios of between 3:1 to 27:1 for agriculture and 2:1 to 22:1 for wildlife protection. For human health and safety, benefit:cost ratios are more difficult to calculate, but we argue that benefits outweigh costs in many different …

Pieces Of Silver: Examples Of The Economic Impact And Management Of The Silver Gull (Larus Novaehollandiae) In Melbourne, Australia, Ian D. Temby

Human Conflicts with Wildlife: 2002 Symposium

Like a number of gull species, the silver gull Larus novaehollandiae has expanded its population in response to human food subsidy. The major anthropogenic food source is food waste at rubbish tips. Other sources of human food waste are also exploited. Many problems result from the activities of these birds, including human health and safety, economic impacts, and effects on the conservation of other species. My study examines aspects of the economic impacts of the silver gull on the human community of the Greater Melbourne Area comprising approximately 4,065 km² (1,569 square miles). My data collection method involves identifying …

Wildlife Impacts On Forest Resources, Dale L. Nolte, Mike Dykzeul

Human Conflicts with Wildlife: 2002 Symposium

The negative impacts of wildlife on forest resources can be extensive. This paper provides some insight into the economic and environmental consequences of wildlife damage to forest resources and a brief overview of the damage inflicted by select wildlife species. Probably the most thorough measure of wildlife damage to forests in the Pacific Northwest was initiated in 1963 and 1964 by the Committee on Animal Damage Survey of the Western Forestry and Conservation Association. This study estimated that 30% of the tree seedlings planted would be damaged if no preventive practices were implemented; stocking rates on unprotected sites were 75% …

The Economic Impact Of Invasive Species To Wildlife Services’ Cooperators, David L. Bergman, Monte D. Chandler, Adrienne Locklear

Human Conflicts with Wildlife: 2002 Symposium

On February 3, 1999, the president of the United States signed an Executive Order 13112 on invasive species. Each federal agency was directed to detect and respond rapidly to control populations of invasive species, monitor invasive species populations, provide for restoration of native species and habitat conditions, conduct research on invasive species and develop technologies to prevent their introduction, and promote public education on invasive species and the means to address them. The United States Department of Agriculture’s Wildlife Services Program fulfills a federal responsibility for helping solve problems which occur when human activity and wildlife, including invasive species, are …

Ard News August 2000

Agricultural Research Division: News and Annual Reports

CONTENTS:

Comments from the Dean
ARD Advisory Council Annual Report to Faculty
Natural Resouurces and Research Update
ARD Advisory Council Election Results
Anna Elliott Proposals
Sampson Range and Pasture Management Endowments
Sampson Range and Pasture Management Endowments
Widaman Trust Distinguished Graduate Assistant Award
Hardin Distinguished Graduate Fellowship for 2000-2001
National Research Initiative Report for 1999
Shear-Miles Fellowship 2000-2001
NRC Assessment of the National Research Initiative
USDA - ARS Research Leader Dr. Philip J. Schall
USDA Science and Education Impact Sheets
Congratulations to Faculty - Successful USDA Grant Proposals
Proposals Submitted for Federal Grants
New or Revised Projects
Grants and Contracts …

The International Lepidoptera Survey Newsletter, August 2000, International Lepidoptera Survey, Ron Gatrelle

International Lepidoptera Survey Newsletter

Contents

Brephidium isophthalma insularus

Lepidopterists’ Society Annual Meeting

Phenosyncronic subspeciation

Announcement: Be watching for The International Lepidoptera Survey interactive web site

A Day of Collecting in Burke County Georgia by Ron Gatrelle (pages 3-5)

Nutrient Absorption And Utilization By Wing And Flight Muscle Morphs Of The Cricket Gryllus Firmus: Implications For The Trade-Off Between Flight Capability And Early Reproduction, Anthony J. Zera, Tammy Brink

Anthony Zera Publications

Absorption efficiency (AD, approximate digestibility, assimilation efficiency) of various macronutrients and conversion of absorbed nutrients to biomass (ECD) were compared among the two types of flightless morph and the flight-capable morph of the cricket, Gryllus firmus. No biologically significant phenotypic or genetic difference in AD for carbohydrate, protein or lipid was observed among morphs fed either a high-nutrient (100%) or a low-nutrient (25%) diet. Thus, previously-documented differences among adult morphs in carbohydrate and lipid content must be caused by processes other than variation in nutrient absorption by morphs during adulthood. Relative absorption efficiency of total dry mass of food …

Has An Integrated Pest Management Approach Reduced Blackbird Damage To Sunflower?, George M. Linz, Brian D. Peer, H. Jeffrey Homan, Ryan L. Wimberly, David L. Bergman, William J. Bleier

Human Conflicts with Wildlife: 2002 Symposium

Since the mid-1970s many new and modified damage abatement methods have been implemented to reduce blackbird damage to ripening sunflower in the northern Great Plains. Concurrently, estimates were made of breeding blackbird densities and sunflower damage to track changes in population size and chart progress toward reducing damage. Breeding density estimates were made at both the regional and county levels, whereas sunflower damage estimates were made at the county level only. Periodic regional estimates of breeding densities, between 1967 and 1998, showed that numbers of red-winged blackbirds (Agelaius phoeniceus) and yellow-headed blackbirds (Xanthocephalus xanthocephalus) did not …

Children Of Alcoholics: An Update., D Z Lieberman

Psychiatry and Behavioral Sciences Faculty Publications

One of four children in the United States lives in a family in which the child is exposed to alcoholism. Children of alcoholics (COAs) are two to ten times more likely to develop alcoholism than non-COAs. This paper reviews studies that have attempted to identify risk factors that mediate the increased vulnerability and the protective factors that moderate the risk. Factors discussed include parental antisocial personality disorder, externalizing behavior, internalizing symptoms, differential response to the effects of alcohol, and positive and negative alcohol-related expectancies. The heterogeneous nature of COAs is emphasized, and some of the challenges related to treatment and …

Nebline, August 2000

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

Handling Food Safely at Home
Controlling Undesirable Perennial Grasses in the Lawn
Purple Loosestrife Noxious Weed
Storing Extra Seeds
Your Hummingbird Feeders Should Be Up and Running
Tips for Non-toxic Cricket and Spider Control
West Nile Virus and Rabbit Calcivirus Disease Alerts
New Website Help for Wildlife Damage Problems
Be Wary of Nitrate, Prussic Acid Poisoning This Summer
Deadline Approaches to Terminate Farm Leases
Fuel Price Adds $10 Per Acre to Irrigation Cost
Protect Hearing on the Farm
The Financial Plan
Marketing Strategies
Avoid Foliar Diseases on Tomatoes
Blight Affects Junipers, Windbreaks
Drinking Water Questions and Answers
200 Youth Explore …

Design And Characterization Of A Synthetic Electron-Transfer Protein, Anna Y. Kornilova, James F. Wishart, Wenzhong Xiao, Robin C. Lasey, Anna Fedorova, Yeon-Kyun Shin, Michael Y. Ogawa

Chemistry Faculty Publications

A 30-residue polypeptide [H21(30-mer)] with the sequence Ac-K(IEALEGK)(2)(IEALEHK)-(IEALEGK)G-NH2 was synthesized. The circular dichroism (CD) spectrum of the peptide shows minima at 208 and 222 nm and theta(222)/theta(208) = 1.06, which indicates the formation of a self-assembled coiled-coil when dissolved in aqueous solution. The concentration dependence of the CD data can be fit to an expression that describes a two-state monomer-dimer equilibrium for the apopeptide (K-d = 1.5 +/- 0.4 mu M and theta(max) = -23 800 +/- 130 deg cm(2) dmol(-1)), showing that it has a maximum helicity of 69%. A [MTSL-C21(30-mer)] dimer was also prepared in which MTSL is …

"Gmo:" Genetically Modified Organism Or Gigantic Monetary Obligation? The Liability Schemes For Gmo Damage In The United States And The European Union, A. Bryan Endres

Loyola of Los Angeles International and Comparative Law Review

No abstract provided.

The Texas Caver, Volume 45, No. 4, July-August 2000, Joe Ivy, Rebecca Jones

The Texas Caver

Contents: Editorial: Why Survey? -- Cave Exploration, Cave Conservation -- Cave Surveying: The Sketcher's Burden, Setting Stations, Survey --Standards for Colorado Bend, Principles of Measurement -- Book Reviews: Survey Books -- Equipment: Survey Instruments -- Project Reports: Bustamante, Charco -- Accident Report: 0-9 Well -- Trip Reports: Caving in Paradise, Finally, Fitton!, 0-9 Well -- The Bifocaled Caver -- Vertical Techniques - Self-Belay Treadmill -- From the Files of the TSS -- Lost Caves of Texas - Culberson County -- TSA News: Spring Convention 2000, Spring Business Meeting -- Grotto Reports

An Analysis Of The Influence Of Age And Ionizing Radiation On Cognitive Performance, Elizabeth L. Gerhardt

Master's Theses - Daytona Beach

This thesis was designed to study whether age has a significant effect on cognitive test results among persons exposed to ionizing radiation. The data for this investigation came from the fourth year of a 1995-98 longitudinal study of subjects exposed to radiation from the 1986 Chernobyl, Ukraine, nuclear power plant accident. Accuracy and efficiency scores from four cognitive tests taken by 84 Ukrainian volunteers were divided into two age groups and three radiation dosage groups for analysis. The results of this study found that decrements in human performance on tasks involving spatial processing increase with age in persons who have …

Hexapod Herald - Vol. 12, No. 3, August 2000

Hexapod Herald and Other Entomology Department Newsletters

Calendar of events

Grants

Welcome

Faculty news

Graduate student news

Publications

Travel

From the office

Studies Of Sulfur Reduction Of Taurine And Taurine-Conjugated Bile Acids By Bile Acid 7Α-Dehydroxylating Bacteria, Jiang Qian

Masters Theses & Specialist Projects

Bile acids are C24 steroids that are derived in the liver from cholesterol and secreted into the intestinal lumen to aid in emulsification of dietary lipids and lipid-soluble vitamins. The indigenous intestinal microflora modify bile acids, producing up to 20 unique bile acid metabolites. The 7α-dehydroxylation of the bile acids is the most physiologically important bile acid biotransformation. All known intestinal bacteria capable of bile acid 7α-dehydroxylation are anaerobic, gram-positive rods of the genera Clostridium and Eubcicterium. Bile acid 7α-dehydroxylating bacteria often contain bile salt hydrolase, which hydrolyzes the peptide bond in taurine-conjugated bile acids to yield a free bile …

North Atlantic Intermediate To Deep Water Circulation And Chemical Stratification During The Past 1 Myr, Benjamin P. Flower, D. W. Oppo, J. F. Mcmanus, K. A. Venz, D. A. Hodell, J. L. Cullen

Marine Science Faculty Publications

Benthic foraminiferal carbon isotope records from a suite of drill sites in the North Atlantic are used to trace variations in the relative strengths of Lower North Atlantic Deep Water (LNADW), Upper North Atlantic Deep Water (UNADW), and Southern Ocean Water (SOW) over the past 1 Myr. During glacial intervals, significant increases in intermediate-to-deep delta(13)C gradients (commonly reaching >1.2 parts per thousand) are consistent with changes in deep water circulation and associated chemical stratification. Bathymetric delta(13)C gradients covary with benthic foraminiferal delta(18)O and covary inversely with Vostok CO2, in agreement with chemical stratification as a driver of atmospheric CO2 changes. …

Cave Research Foundation Newsletter, Volume 28, No. 1, August 2000, Paul Nelson

Cave Research Foundation Newsletter

Contents: Hamilton Valley Update -- Message from the Editor -- Make Freeman Pay! -- President's Column: Timing is Everything -- Cave Research Foundation Open House & Dedication -- The Eighth Mammoth Cave Science Conference, October 5 & 6, 2000 -- CRF Annual Meeting, November 10-12th, St. Louis, Missouri -- Hawaii 2000 Report -- Hamilton Valley Building Project Supporters -- Clear Out Your Closet! and Raise $$$ for the Hamilton Valley Research Station -- Books, Books, Books! -- Tom Poulson Retirement -- Lava Beds Research Center Needs Your Help!! -- Book Reviews -- Regional Expedition Reports -- Calendar

Regional Variation In Recruitment Of Hemlock Seedlings And Saplings In The Upper Great Lakes, Usa, Thomas P. Rooney, Ronald J. Mccormick, Stephen L. Solheim, Donald M. Waller

Biological Sciences Faculty Publications

Mature eastern hemlock–northern hardwood forest cover decreased drastically in the upper Midwest following European settlement and has yet to rebound substantially. Previous studies show that stands retaining substantial hemlock canopy coverage have low hemlock seedling and sapling densities. Results from various geographically restricted studies suggest several possible mechanisms that could cause low seedling or sapling density. We examined the relative importance of these proposed mechanisms in the Southern Superior Uplands Section of the Laurentian Forest Province. We surveyed 294- m2 plots in 100 hemlock stands in northern Wisconsin and western upper Michigan to assess how these proposed mechanisms affect the …

Usf Women's Club Yearbook, 2000–2001, Usf Women's Club

USF Women’s Club Collection

Yearbook of the USF Women's Club. Inside is a list of past presidents, officers, committee chairmen, and members for 2000–2001. The booklet also includes interest groups, calendar of events, and a copy of the constitution and by-laws from the handbook.

Satellite Tracking Of Cory's Shearwater Migration, Dietrich Ristow, Peter Berthold, Dean Hashmi, Ulrich Querner

Condor

No abstract provided.

Rapd-Pcr Amplification Of Dna Extracted From Avian Blood Infected With Haemoproteus Fails To Produce False Positive Markers, Patrick W. Zwartjes, John A. Hinda

Condor

No abstract provided.

The Spatial Response Of Male Hooded Warblers To Edges In Isolated Fragments, D. Ryan Norris, Bridget J. Stutchbury, Trevor E. Pitcher

Condor

No abstract provided.

Comparative Seasonal Fecundity Of Four Neotropical Migrants In Middle Appalachia, Jennifer A. Dececco, Matthew R. Marshall, Alan B. Williams, George A. Gale, Robert J. Cooper

Condor

No abstract provided.

Inbreeding Depression And Its Effects On Natal Dispersal In Red-Cockaded Woodpeckers, Susan J. Daniels, Jeffrey R. Walters

Condor

No abstract provided.

Effects Of Forest Fragment Size And Successional Stage On Mixed-Species Bird Flocks In Southeastern Brazil, Marcos Maldonado-Coelho, Miguel A. Marini

Condor

No abstract provided.