Digital Commons Network^™

Linking People, Purpose, And Place: An Ecological Approach To Agriculture, Heidi Carter, Richard Olson, Charles A. Francis

CARI Extension and Education Materials for Sustainable Agriculture

Linking Ecology and Agriculture

Whole Farm Planning

Soil Quality

Agroforestry

Grazing Systems

Weed and Insect Management

Farmer Groups

Farmland Conversion

Resources and Information Sources

Incorporation Of Nisin Into A Meat Binding System To Inhibit Bacteria On Beef Surfaces, C. N. Cutter, G. R. Siragusa

Roman L. Hruska U.S. Meat Animal Research Center: Reports

In two separate experiments, the bacteriocin, nisin, was incorporated into a commercially available meat binding system (Fibrimex®) and applied to meat surfaces as a way of inhibiting the meat spoilage organism, Brochothrix thermosphacta during extended refrigerated storage. In experiment 1, pre-rigor lean beef carcass tissue (BCT) was inoculated with B. thermosphacta, left untreated (U), treated with 10 µg ml^-1 nisin (N), Fibrimex® (F) or Fibrimex® containing 10 µg ml^-1 nisin (FN), held aerobically at 4 °C for up to 7 d, and populations of B. thermosphacta and nisin activity determined. Experiment 2 determined the effects of the same …

Reveille - 1998, Fort Hays State University

Reveille Yearbooks

Fort Hays State University 1998 Reveille

Fact Book 1998-1999, Western Michigan University

Western Michigan University Fact Books

• General Information
• Enrollment Information
• Institutional Comparison
• Student Information
• Faculty Information
• Budgets and Resources

President's Report To Board Of Trustees, 1998, Clemson University

President's Reports to the Board of Trustees

No abstract provided.

Harding University Course Catalog 1998-1999, Harding University

Harding Academic Catalogs

Catalog of Harding University 1998-1999

Defensible Space: A Behavioral Approach For Managing Predators At The Urban-Wildland Interface, Morgan E. Wehtje

Vertebrate Pest Conference Proceedings: 18th (1998)

Southern California has experienced rapid human population growth during the past 50 years. As housing continues to encroach into and abut previously undeveloped areas containing wildlife communities, conflicts between homeowners and predators have become common. Traditional methods of control (removal) of problem animals are often infeasible due to legislative constraints, local ordinances, public opinion, and environmental considerations. This necessitates developing alternative approaches to facilitate coexistence and diminish the opportunities for negative interactions. In the Defensible Space program, people are educated about local wildlife and provided animal behavior based methods to respond to animal incursions. Though the system is not always …

Are Wildlife-Caused Losses Of Agriculture Increasing?, Alice P. Wywialowski

Vertebrate Pest Conference Proceedings: 18th (1998)

Both the percent of producers reporting and the value of wildlife-caused losses increased from 1989 to 1994. In 1994, 58% of respondents reported wildlife-caused losses of their agricultural commodities, an increase from the 55% of respondents who reported losses in 1989. Based on the median value of producer-estimated loss, wildlife caused losses cost producers approximately $591 million in 1994, $130 million more than in 1989. Losses based on producer estimates have been consistent with field-measured estimates of damage. While these losses represent 1 % of the value of agricultural production, losses were not evenly distributed and 23% of producers estimated …

Opening Remarks—Eighteenth Vertebrate Pest Conference, Rex O. Baker

Vertebrate Pest Conference Proceedings: 18th (1998)

On behalf of the Vertebrate Pest Council, welcome to the Eighteenth Vertebrate Pest Conference. For 36 years, the Council has been presenting these conferences for the purpose of advancing knowledge in the field of vertebrate pest management. The conference proceedings are utilized extensively throughout the world as a source of information regarding vertebrate pest biology, behavior, ecology, and integrated pest management technology.

Never before has the vertebrate pest management field been under as much pressure to change from using traditional control methods of trapping and toxicants, to what are viewed as more humane and environmentally friendly methods. Unfortunately, the general …

The Management Of House Mice In Agricultural Landscapes Using Farm Management Practices: An Australian Perspective, Peter R. Brown, Grant R. Singleton, S. Clare Dunn

Vertebrate Pest Conference Proceedings: 18th (1998)

During 1995 to 1997, the efficacy of early tactical management of mouse populations in a project based on grain-growing farms in Victoria, Australia was examined. Farmers modified their management practices of crops (at sowing, harvest, and land preparation), and managed habitats on the boundary of cropped land (such as fencelines) and around farm buildings. One management practice examined was the effect on mouse populations of controlling weeds along margins of crops. On sites where farmers slashed or sprayed weeds in early spring, there was a comparative reduction in the abundance of mice in late summer compared to untreated sites.

Managing Mouse Plagues In Rural Australia, Judy Caughley, Christine Donkin, Kevin Strong

Vertebrate Pest Conference Proceedings: 18th (1998)

The frequency of mouse plagues in grain-growing areas of Australia has increased since the advent of conservation fanning practices. The increase has been particularly marked on the Darling Downs in Queensland where the frequency has trebled. Broadscale monitoring is undertaken by the government to provide a general forewarning of plague. However, the authors found, from a questionnaire to farmers, that the incidence and timing of plagues is highly variable across the Downs. It is apparent that farmers need to monitor the numbers of mice on their properties at regular intervals if they are to undertake preventive management. Bait cards (pieces …

Mammalian Reservoirs And The Changing Epidemiology Of Rabies In The United States, James E. Childs, John W. Krebs, Charles E. Rupprecht

Vertebrate Pest Conference Proceedings: 18th (1998)

The epidemiology of rabies in the United States has changed dramatically over the past few decades. Greater than 90% of all animal rabies cases reported annually to the Centers for Disease Control and Prevention now occur in wildlife, whereas before 1960 the majority were domestic animals. The principal rabies reservoirs today are wild carnivores and bats, infected with many different types of rabies virus variants. Annual reporting of human deaths have fallen from more than 100 at the turn of the century to one to six per year, despite major outbreaks of animal rabies in several distinct geographic areas. Most …

Ecology And Management Of Coyotes In Tucson, Arizona, Martha I. Grinder, Paul R. Krausman

Vertebrate Pest Conference Proceedings: 18th (1998)

Increasingly, coyotes are becoming common residents of urban areas in the western United States, including Tucson, Arizona. The authors' objectives were to determine the home-range size of coyotes in Tucson, the habitat encompassed by the home ranges of these coyotes compared with the habitat available in Tucson, and the use of habitats within the home range, compared to their availability in the home range. To address these objectives, the authors trapped, radiocollared, and followed 13 coyotes via radiotelemetry in Tucson, Arizona. Seven coyotes were in less-densely populated areas (< 1 house/0.4 ha, called rural) of Tucson; six coyotes were in densely populated areas (> 1 house/0.4 ha, called urban) of Tucson. The authors used RANGES …

Tracing The History Of Blackbird Research Through An Industry's Looking Glass: The Sunflower Magazine, George M. Linz, H. Jeffrey Homan

Vertebrate Pest Conference Proceedings: 18th (1998)

The Sunflower magazine, the voice of the National Sunflower Organization, featured articles in January 1978 and December 1996 that began with these words, "If Old King Cole was a merry old soul, it was probably because he had only four and twenty blackbirds to contend with, and they were all out of commission!" This quotation captures the sentiments of sunflower growers, who have identified blackbirds as a major production problem since the 1960s. The National (formerly Denver) Wildlife Research Center, a unit within the U.S. Department of Agriculture's Animal and Plant Health Inspection Service Wildlife Services, is charged with both …

Feral Goats In Australia: Impacts And Cost Of Control, Sylvana Maas

Vertebrate Pest Conference Proceedings: 18th (1998)

Feral goats are both a pest and a resource in Australia. They are thought to compete with domestic livestock for food and water and endanger the survival of native flora and fauna. However, there is little quantitative information on the impact of feral goats on agricultural production or conservation values. Their presence on agricultural land is partly tolerated since they can be commercially harvested by mustering or trapping at water points. Where commercial harvesting is not possible, other control techniques must be used. Aerial shooting is the most commonly used technique to remove goats in inaccessible areas, but it is …

One Hundred Years Of Pocket Gopher Traps And Trapping, Rex E. Marsh

Vertebrate Pest Conference Proceedings: 18th (1998)

The pest status of pocket gophers (Thomomys spp. and Geomys spp.) to agricultural crops and home gardens is well established, as is the fact that trapping in the early history of this country and its western expansion was the predominant method of their control. The former payment of bounties for gopher scalps or tails is thought to have stimulated the development and production of dozens of different kinds and models of gopher traps. In the midwest, prior to the industrial revolution, small size leg-hold traps were used for taking gophers because they were the only traps available. By 1880, …

Trends In Mountain Lion Depredation And Public Safety Incidents In California, Terry M. Mansfield, Kristin G. Charlton

Vertebrate Pest Conference Proceedings: 18th (1998)

Mountain lions (Puma concolor) are widely distributed and have apparently expanded their range and increased in abundance in California since the early 1970s. Conflicts between mountain lions and humans have increased during this period. Trends in verified mountain lion damage to livestock and pets are reported for the 26-year period 1972 to 1997. Confirmed mountain lion attacks on humans are summarized for the period 1890 to 1997. This information was analyzed by county, and related to mountain lion habitat suitability, livestock distribution, and human population trends. Health and physical characteristics of a sample of 417 mountain lions were …

A Techniques Manual And Video For The Management Of Problem Urban Canada Geese, Arthur E. Smith, Scott R. Craven, Paul D. Curtis

Vertebrate Pest Conference Proceedings: 18th (1998)

Social and management problems associated with urban Canada geese (Branta canadensis) are increasing in area, scope and magnitude. Although there are many articles on the management of urban Canada geese, none provide enough information for a reader to understand the impact geese have on different people, the ecology of the urban goose, evaluate the effectiveness of potential control options, choose appropriate management techniques, and then implement the chosen techniques. The authors present a manual and video, which in combination, they believe are not deficient in any of these areas. The video is intended to increase the awareness and …

Biogenic Iron Mineralization Accompanying The Dissimilatory Reduction Of Hydrous Ferric Oxide By A Groundwater Bacterium, James K. Fredrickson, John M. Zachara, David Kennedy, Hailang Dong, Tullis Onstott, Nancy Hinman, Shu-Mei Li

United States Department of Energy: Publications

Dissimilatory iron-reducing bacteria (DIRB) couple the oxidation of organic matter or H2 to the reduction of iron oxides. The factors controlling the rate and extent of these reduction reactions and the resulting solid phases are complex and poorly understood. Batch experiments were conducted with amorphous hydrous ferric oxide (HFO) and the DIRB Shewanella putrefaciens, strain CN32, in well-defined aqueous solutions to investigate the reduction of HFO and formation of biogenic Fe(II) minerals. Lactate-HFO solutions buffered with either bicarbonate or 1,4-piperazinediethanesulfonic acid (PIPES) containing various combinations of phosphate and anthraquinone-2,6-disulfonate (AQDS), were inoculated with S. putrefaciens CN32. AQDS, a humic …

Induction Of Oxidative Stress In Brain Tissues Of Mice After Subchronic Exposure To 2,3,7,8-Tetrachlorodibenzo-P-Dioxin, Ezdihar A. Hassoun, Shawn C. Wilt, Michael J. Devito, Angelique Van Birgelen, Naser Z. Alsharif, Linda S. Bimbaum, Sidney J. Stoh

United States Environmental Protection Agency: Publications

The ability of single doses of 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) to induce oxidative stress in hepatic and some extrahepatic tissues of animals is well documented. However, no previous study has examined the ability of TCDD to induce oxidative stress and tissue damage in brain in vivo. In this study the ability of TCDD to induce oxidative stress in brain tissues of mice was studied after subchronic exposures. Groups of female B6C3F1 mice were treated orally with TCDD (0, 0.45, 1.5, 15, and 150 ng/kg/day) for 13 weeks, 5 days/week. The animals were euthanized 3 days after the last treatment and brain tissues …

Foraging Modes Of Chinstrap Penguins: Contrasts Between Day And Night, John K. Jansen, Peter L. Boveng, John L. Bengtson

United States Department of Commerce: Staff Publications

Penguins rely on vision to travel and hunt at sea. Vision in marine predators, particularly those hunting phototactic prey under a broad range of light intensities, must be better understood to realize how these species respond to changes in their environment. We studied the effects of daily cycles in light intensity on visual predators by examining the duration and timing of chinstrap penguins' Pygoscelis Antarctica foraging trips and the size, composition, and timing of their meals. We used radio telemetry and stomach-contents sampling to study adult penguins that were provisioning chicks during the summers of 1993 and 1994 at Seal …

Sounds Recorded From Baird's Beaked Whale, Berardius Bairdii, Stephen Dawson, Jay Barlow, Don Ljungblad

United States Department of Commerce: Staff Publications

The vocal behavior of ziphiid whales is very poorly known. Free-swimming northern bottlenose whales, Hyperoodon ampullatus, have been recorded producing 3-16 kHz whistles and chirps (Winn et al. 1970; linear equipment frequency response 500 Hz-14 kHz) and 20-30 kHz ultrasonic clicks (Fauchner and Whitehead, unpublished data; equipment response to 35 kHz). A free-swimming mesoplodont beaked whale (probably Mesoplodon hertori) produced ultrasonic clicks (Ljungblad, unpublished data; equipment frequency response to 32 kHz). Sounds have been recorded from a stranded Blainville's beaked whale, Mesoplodon densirostris (Caldwell and Caldwell 1971; equipment frequency response 40 Hz-20 kHz) and a post-stranding, captive …

Seasonal Patterns In The Abundance And Distribution Of California Cetaceans, 1991-1992, Karin A. Forney, Jay Barlow

United States Department of Commerce: Staff Publications

This study presents a detailed seasonal comparison of the abundance and distribution of cetaceans within 100-150 nmi (185-278 km) of the California coast during 1991 and 1992. The results of a shipboard line-transect survey conducted in July-November 1991 (“summer”) were compared to those from aerial line-transect surveys conducted in March-April 1991 and February-April 1992 (“winter”). Using a confidence-interval-based bootstrap procedure, abundance estimates for six of the eleven species included in the comparison exhibited significant (a = 0.05) differences between the winter and summer surveys. Pacific white-sided dolphins (Lagenorhynchus obliquidens), Risso’s dolphins (Grampus griseus), common dolphins ( …

The Saccharomyces Cerevisiae Tsc10/Ybr265w Gene Encoding 3-Ketosphinganine Reductase Is Identified In A Screen For Temperature-Sensitive Suppressors Of The Ca2+-Sensitive Csg2Δ Mutant, Troy Beeler, Dagmar Bacikova, Ken Gable, Lisa Hopkins, Courtney Johnson, Harry Slife, Teresa Dunn

Uniformed Services University of the Health Sciences

Saccharomyces cerevisiae csg2Δ mutants accumulate the sphingolipid inositolphosphorylceramide, which renders the cells Ca²⁺-sensitive. Temperature-sensitive mutations that suppress the Ca²⁺ sensitivity of csg2Δ mutants were isolated and characterized to identify genes that encode sphingolipid synthesis enzymes. These temperature-sensitive csg2Δ suppressors (tsc) fall into 15 complementation groups. The TSC10/YBR265w gene was found to encode 3-ketosphinganine reductase, the enzyme that catalyzes the second step in the synthesis of phytosphingosine, the long chain base found in yeast sphingolipids. 3-Ketosphinganine reductase (Tsc10p) is essential for growth in the absence of exogenous dihydrosphingosine or phytosphingosine. Tsc10p is a member of the …

Nebraska Summary: S445 Zetor 10741, Nebraska Tractor Test Lab

Nebraska Tractor Tests

ABOUT THE TEST REPORT AND USE OF THE DATA The test data contained in this report are a tabulation of the results of a series of tests. Due to the restricted format of these pages, only a limited amount of data and not all of the tractor specifications are included. The full OECD report contains usually about 30 pages of data and specifications. The test data were obtained for each tractor under similar conditions and therefore, provide a means of comparison of performance based on a limited set of reported data. EXPLANATION OF THE TEST PROCEDURES Purpose The purpose of …

1997 Inventory For Spiranthes Diluvialis Sheviak In Western Nebraska: A Final Report, Volume I, Terri Hildebrand

Nebraska Game and Parks Commission: White Papers, Conference Presentations, and Manuscripts

This study resulted from an agreement between Nebraska Game and Parks Commission (NGPC) and the United States Fish and Wildlife Service (USFW). After the 1996 discovery of Spiranthes diluvialis, in western Nebraska, NGPC was seeking to determine the extent of the Nebraska population. Information on the wet meadow community of orchid occurrence in Nebraska and eastern Wyoming was needed. This report includes descriptions of communities inventoried, Spiranthes diluvialis populations, and additional species monitored by Nebraska and Wyoming Natural Heritage programs.

The 1996 discovery of Spiranthes diluvialis in Nebraska by Hazlett merited the need for further inventory for the species …

Center For Grassland Studies Newsletter, Winter 1998, Volume 4, No. 1

Center for Grassland Studies: Newsletters

Contents:

Biological Control of Weedy Exotic Thistles and Its Ecological Side Effects in the Sandhills: Observations (Part 1) by Svata Louda, School of Biological Sciences, UNL

Cutting Edge Technology Used for UNL Football Practice Field by Roch Gaussoin, Department of Horticulture, UNL

Early-summer Grazing Effects on Defoliation and Tiller Demography of Prairie Sandreed by Andrew Cullan, Patrick Reece and Walter Schacht, Department of Agronomy, UNL

Bison/Buffalo Information

East Meets West in 1999: SRM/AFGC Joint Meeting by Heidi Carter, Center for Sustainable Agricultural Systems, UNL

Field Trip Graduate Course on Ecology of Grazing Lands

Tobacco Company Liability Under Mail Fraud, Juan Carlos Lopez-Campillo

St. Thomas Law Review

In the United States, tobacco products are heavily advertised. Advertising budgets of tobacco companies have increased more than 1,500% between 1970 and 1992. In 1993, $6.2 billion were spent by tobacco companies on advertising and promoting their products. This Comment examines whether the mail fraud statute applies where tobacco consumers read advertising printed in newspapers or magazines mailed to subscribers, in furtherance of the companies' fraudulent scheme. If so, the second element of mail fraud is satisfied, and tobacco company executives may then be held criminally liable for their fraudulent deception of the American public.

Suffolk University Newsletter (Sun), Vol. 27, No. 1, 1998-1999, Suffolk University Office Of Public Affairs

Suffolk University Newsletter (SUN)

No abstract provided.

Suffolk University Newsletter (Sun), Vol. 26, No. 5, 1998, Suffolk University Office Of Public Affairs

Suffolk University Newsletter (SUN)

No abstract provided.