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Habitat Associations And Relative Densities Of Rodent Populations In Cultivated Areas Of Central Argentina, James N. Mills, Barbara A. Ellis, Kelly T. Mckee, Julio I. Maiztegui, James E. Childs

Zoonotics and Wildlife Disease: Publications

Small mammals were livetrapped during 12 months in crop fields and weedy borders at 18 sites in central Argentina. A total of 1,652 mammals of 14 species was captured during3 3,060 trap-nights. Six species of rodents comprised > 95% of captures. Periodically disturbed fields of crops were dominated by Calomys musculinus and C. laucha, and to a lesser extent Mus musculus. A second group composed of Akodon azarae, Bolomys obscures, and Oligoryzomys flavescens primarily inhabited the more stable, weedy borders of cultivated fields. Peaks in relative densities of C. musculinus, C. laucha, and M . musculus …

Evaluation Of The Role Of Shiga And Shiga-Like Toxins In Mediating Direct Damage To Human Vascular Endothelial Cells, Vernon L. Tesh, James E. Samuel, Liyanage P. Perera, John B. Sharefkin, Alison D. O'Brien

Uniformed Services University of the Health Sciences

Infection with Shinga toxin- and Shinga-like toxin -producing strains of Shigella dysenteriae and Escherichia coli, respectively, can progress to the hemolytic-uremic syndrome. It has been hypothesized that circulating Shinga toxin, Shinga-like toxins, and endotoxins may contribute to the disease by directly damaging glomerular endothelial cells. The effects of these toxins on HeLa, Vero, and human vascular endothelial cells (EC) were examined. Confluent EC were sensitive to Shinga toxin but were at least 10⁶-fold less sensitive to the toxins than were Vero cells. Shinga toxin was the predominant cytotoxic factor. Lipopolysaccharides were not cytotoxic and did not augment …

U And Sr Isotopes In Ground Water And Calcite, Yucca Mountain, Nevada: Evidence Against Upwelling Water, J. S. Stuckless, Z. E. Peterman, Daniel R. Muhs

United States Geological Survey: Staff Publications

Hydrogenic calcite and opaline silica deposits in fault zones at Yucca Mountain, Nevada, have created considerable public and scientific controversy because of the possible development of a high-level nuclear waste repository at this location. Strontium and uranium isotopic compositions of hydrogenic materials were used to test whether the veins could have formed by upwelling of deep-seated waters. The vein deposits are isotopically distinct from ground water in the two aquifers that underlie Yucca Mountain, indicating that the calcite could not have precipitated from ground water. The data are consistent with a surficial origin for the hydrogenic deposits.

Cellular Track Model Of Biological Damage To Mammalian Cell Cultures From Galactic Cosmic Rays, Francis A. Cucinotta, Robert Katz, John W. Wilson, Lawrence W. Townsend, John E. Nealy, Judy L. Shinn

Robert Katz Publications

The quality factor (QF) as defined in International Commission on Radiological Protection report no. 26 (ICRP 26, ref. 1) or in International Commission on Radiation Units and Measurements report no. 40 (ICRU 40, ref. 2) is not expected to be a valid method for assessing the biological risk for deep space missions where the high-energy heavy ion (HZE) particles of the galactic cosmic rays (GCR) are of major concern. No human data for cancer induction from the HZE particles exist, and information on biological effectiveness is expected to be taken from experiments with animals and cultured cells (ref. 3). Experiments …

Cc361 The Food, Agriculture, Conservation, And Trade Act Of 1990 : An Overview Part Iii - Miscellaneous Provisions (Titles Xv, Xvi, Xviii, Xix, Xx, Xxi, Xxii, Xxiii, Xxiv, Xxv), A. L. Frederick

University of Nebraska-Lincoln Extension: Historical Materials

Campaign Circular 361 contains an overview of the miscellaneous provisions included in the food, agriculture, conservation, and trade act of 1990.

Integrating Cognitive Ethology With Cognitive Psychology, Sonja I. Yoerg, Alan Kamil

Papers in Behavior in Biological Sciences

Cognitive ethology has been defined by Griffin (1978,1981, 1984) as the study of mental experiences in animals, restricting the domain of the field to phenomena thought to reveal intentionality, awareness, and conscious thinking. We argue that attempts to study these processes, while revealing impressive behavioral complexity, have proven unsuccessful in establishing the importance of mental experiences in determining animal behavior primarily because of the intractability of the problem. We suggest a different approach that draws upon the rich theory and sophisticated methodology of human and animal cognitive psychology while retaining an ecological and evolutionary perspective. Brief accounts of the conceptual …

G91-1062 Termites (Revised March 2002), Shripat T. Kamble

University of Nebraska-Lincoln Extension: Historical Materials

This NebGuide provides information on biology and control of subterranean termites.

Termites feed on wood and serve an important function in nature by converting dead trees into organic matter. Unfortunately, the wood in buildings is equally appetizing to termites and they cause serious damage to residential and commercial buildings. Two species of subterranean termites are found in Nebraska and both species have similar habitats.

Black-Capped Vireo Recovery Plan, Joseph A. Grzybowski

Endangered Species Bulletin

Current Species Status: This species is listed as endangered. The number of individuals is unknown. However, it has undergone substantial range reduction in Kansas, Oklahoma, and Texas. It is extirpated in Kansas, and the Oklahoma population is below 300 birds. Declines have also been documented over much of the species’ range in Texas. Its status is uncertain in Coahuila, Mexico.

Habitat Requirements and Limiting Factors: The black-capped vireo occurs in mixed deciduous/evergreen shrubland. Breeding vireos use shrubby growth of irregular height and distribution with spaces between the small thickets and clumps and with vegetative cover extending to ground …

13.1.3. Life History Strategies And Habitat Needs Of The Northern Pintail, Leigh H. Fredrickson, Mickey E. Heitmeyer

Waterfowl Management Handbook

The northern pintail (hereafter pintail) is a common dabbling duck distributed throughout the Northern Hemisphere. Since 1955, the breeding population in North America has averaged 5,566,000, fluctuating between 10,124,000 (1956) and 2,471,000 (1989; Fig. 1). Pintail numbers are especially sensitive to habitat conditions that reflect the wet–dry cycle in the shortgrass prairie breeding areas of south-central Canada and the northern Great Plains of the United States. Populations of pintails also are affected by habitat conditions in key wintering areas, such as the Central Valley of California and Gulf Coast marshes. When wintering areas are fairly dry, birds have fewer resources …

C. R. Henderson: Farm Boy, Athlete, And Scientist, L. Dale Van Vleck

Department of Animal Science: Faculty Publications

Charles R. Henderson was proud to be a product of a farm in Page County, Iowa. He was a one man track team in Coin, Iowa, and a brilliant student. He became a world class competitor in track at Iowa State College and, at the same time, compiled a top academic record. His early experiences set the stage for the exceptional contributions of his animal breeding career, which did not begin until he was nearly 40 yr of age, but which spanned 40 yr when he was the acknowledged leader in development of statistical methodology applied to animal breeding. His …

Use Of A Simulation Model To Evaluate The Influence Of Reproductive Performance And Management Decisions On Net Income In Beef Production, L. A. Werth, S. M. Azzam, Merlyn K. Nielsen, J. E. Kinder

Department of Animal Science: Faculty Publications

A stochastic dynamic model of reproduction and a deterministic cow-herd economic simulation model were used to evaluate how management decisions and reproductive performance interact to influence net income in a cow-calf operation (1,000 cows) for 1 yr of production. The stochastic model was used to determine herd performance when length of breeding season (45, 70, or 120 d) interacted with three postpartum intervals of an estrus (48, 65, or 90 d) and three conception rates at first service (60, 70, or 80%). Short, moderate, and long postpartum intervals were used to reflect differences in reproductive performance. In addition, replacement heifers …

Subsoiling, Contouring, And Tillage Effects On Erosion And Runoff, Paul J. Jasa, Elbert C. Dickey

Department of Agricultural and Biological Systems Engineering: Faculty Publications

A study to evaluate the effectiveness of subsoiling on reducing soil erosion and water runoff from continuous com production was conducted. A rotating boom rainfall simulator was used on replicated treatments having either preplant in-row subsoiling or postplant between-row subsoiling used in both tilled and untilled surface conditions. Tilled and untilled treatments without subsoiling were used as checks. These six treatments were used up-and-downhill and on the contour.

Subsoiling reduced the rate of water runoff but did not significantly reduce the soil erosion rate after equilibrium had been reached between water application and runoff rates. Surface condition and farming direction …

Plate Tectonics, Space, Geologic Time, And The Great Plains: A Primer For Non-Geologists, R. F. Diffendal Jr.

Great Plains Quarterly (through 2013)

For most Americans, "The Great Plains" evokes images of grasslands, dust storms, prairie fires, Indians on horseback, cowboys and wheat lands, and perhaps flat valleys crossed by braided rivers carrying a heavy load of sand and gravel, extremes of weather, and a climate typified by an alternation of droughts and wetter periods. Geologists picture such general images, too, but they also see radical changes in the landscape over periods expressed in millions rather than hundreds of years. Geologically speaking, human activities on the Great Plains are too recent to have much of a place in the broad geologic history of …

Review Of Canyon Visions: Photographs And Pastels Of The Texas Plains, John R. Wunder

Great Plains Quarterly (through 2013)

This is a beautiful book. Its beauty is fourfold. There is an allusive introduction by Archer City native, West Texas novelist Larry McMurtry, and lyrical words and phrases in an introduction and photo/portrait captions by Texas Tech University history professor Dan L. Flores. Then there are forty magnificent photos of the canyons of the Texas Plains taken by Flores and thirty-nine reproductions of pastels of the canyon landscapes of West Texas by Amarillo artist Amy Gormley Winton. The photographs and pastels are very effectively organized on separate pages facing each other and are arranged in five sections-"Elements," "Forms," "Texture," "Color," …

Plant Production Cost-Accounting/ Management System, Kevin C. Power, Jay Fitzgerald, George Meyer, Dennis D. Schulte

Department of Agronomy and Horticulture: Faculty Publications

A microcomputer program has been developed to keep records on energy, labor costs, product pricing, and revenue predictions for greenhouse and nursery production. The program manages plant production data, potentially enabling the grower to improve production and profits. The grower can use the program to determine how much it costs to produce individual plants, to ascertain labor costs and where to reallocate employees. Advertising and other indirect costs can be included to determine cost of production on a per-plant or per-square-foot basis.

An Isolated Storage Vessel At Site 42sa20779 In Glen Canyon National Recreation Area: Adaptive Storage And Caching Behavior In The Prehistoric Southwest, Anne M. Wolley, Alan J. Osborn

Department of Anthropology: Faculty Publications

This report documents the excavation and analysis of a large, isolated ceramic vessel discovered in the spring of 1988 in the Hite Marina area of Glen Canyon National Recreation Area, Utah Project #89-NA-051N. Several college students from Western State College in Colorado (Dean Brian, Matt How, Cathy Arvey, and Mike Donaldson) were hiking in the area when Dean Brian discovered the pot. Aware of the possible significance of such a find, Matt How immediately contacted Park Archaeologist Kris Kincaid and informed her of the vessel's location. Matt later returned with his family, Micky and JoNell How, when archaeologists Kincaid and …

Ovulation Rate And Twinning Rate In Cattle: Heritabilities And Genetic Correlation, L. Dale Van Vleck, K. E. Gregory, S. E. Echternkamp

Department of Animal Science: Faculty Publications

Repeated measures of ovulation rate on puberal heifers should be an effective way to select for increased twinning rate. A reliable estimate of the genetic correlation between ovulation and twinning rates is needed to implement such selection and to predict its efficiency. Restricted maximum likelihood was used to estimate genetic correlations from subsets of data collected from the twinning project at the Roman L. Hruska U.S. Meat Animal Research Center. The animal model included numerator relationships among the animals and 6x4 effects of year-season of measurement, age at measurement, and birth group. Genetic correlations between averages of ovulation rates for …

Feeding Value Of Grain Sorghum For The Lactating Sow, G. F. Louis, A. J. Lewis, E. R. Peo, Jr.

Department of Animal Science: Faculty Publications

Two experiments were conducted to investigate the effects of a corn-soybean meal (CSBM) and a sorghum-soybean meal (S-SBM) diet on reproductive performance and nutrient utilization by sows. In Exp. 1,75 sows (39 gilts; 36 primiparous) were fed either a C-SBM or a S-SBM gestation diet from breeding to d 109, On d 110, sows were assigned to lactation diets; half of the sows from each dietary treatment were assigned to a lactation diet based on the opposite grain. Sow weight change from d 54 to farrowing was greater (P < .06) for sows fed S-SBM than for sows fed C-SBM. There was no difference (P > SO) in weight change of sows during lactation. Feed consumption during …

Acuta Enews January 1991, Vol. 20, No. 1

ACUTA Newsletters

In This Issue

ECCI founder honored

Pocket phone test at UGA

Giving pays off for Emory

Digitizing X-rays

Illicall lists rates

Party Line

Ec91-1771 Windbreaks And Wildlife, Ron J. Johnson, James R. Brandle, Mary M. Beck

University of Nebraska-Lincoln Extension: Historical Materials

Windbreaks can support wildlife that add beauty and pleasure to our lives. They also sustain birds that eat insect pests, improve hunting opportunities, and provide a focal point for family outdoor activities. The world around us would be less appealing without the stimulation--the color, sounds, tracks, and mystery--of wild creatures; windbreaks help wildlife and in some areas are essential to survival of the wildlife we enjoy. You can add wildlife benefits to windbreak plantings whether your main goal is to shelter crops, livestock, roads, or a home or farmstead. This publication provides an overview of windbreaks and wildlife, and gives …

Ec91-1556 Subterranean Termites And Their Control, Shripat T. Kamble

University of Nebraska-Lincoln Extension: Historical Materials

Termite damage to residential and commercial buildings in the U.S. costs more than $1 billion annually. Subterranean termites, the most destructive of all termite species, account for 95% of the damage. Subterranean termites occur in every state except Alaska. Two subterranean termite species, Reticulitermes flavipes (Kollar) and R. tibialis Banks, are found in Nebraska. Control of these termites costs more than $1 million each year.

13.4.18. Chufa Biology And Management, James R. Kelley Jr., Leigh H. Fredrickson

Waterfowl Management Handbook

Chufa (Cyperus esculentus) is an emergent perennial sedge that is common in seasonally flooded wetlands. Although chufa is common in many States, it is most abundant in the Southeast, including the Mississippi alluvial valley (Fig. 1). Belowground biomass of chufa, especially the tubers, serves as a valuable food source for waterfowl and cranes. Chufa tubers rank tenth among the most important waterfowl foods in the United States.

Wildlife Damage News, Volume 2, Winter 1991

Wildlife Damage News

CONTENTS:
Beaver Management and Damage Control
Rabies Update 1990
Wildlife Rehabilitators Exam Offered
Coyote Management in Northern New York
Current Literature
Potential Re-registration of Mesurol?
Guidelines for Agents Recommending "Home Remedies"
New Deer Management Video Available
Current Literature
Living with Wildlife
Study Models Deer-Damage Control Decisions by Orchardists

Ec91-1509 1991 Insect Management Guide For Nebraska : Corn And Sorghum, R. J. Wright, S. D. Danielson, J. F. Witkowski

University of Nebraska-Lincoln Extension: Historical Materials

Extension Cooperative: 91-1509: Insect Management Guide shows the insects that could appear in corn and Sorghum of Nebraska. What can be done to prevent and how to get rid of it once visible.

Grouse News 1-10 (1991-1995), World Pheasant Association International, Diana Lovel

Galliformes Specialist Group and Affiliated Societies: Newsletters

Issue 1 (March 1991)

Editorial, Diana Lovel

Tetraonid study register and abstracting function

Decline of black grouse, Egbert Strauss

Work at Grimso, Jon Swenson

Grouse: Captive breeding and reintroductions, Lain Valentine

How effective is the release of captive bred capercaillie? David Baines

Size of display grounds of capercaillie, E. Viht

New capercaillie research in Scotland, David Baines

Radiotracking of reintroduced black grouse abstract, Stefan Hövel, Sepp Bauer, and Egbert Strauss

Dogs can't find my ptarmigan, David Hancock

Red grouse: The north of England 1990, David Newborn

A second workshop on black grouse, David Baines

Obituary, in memory of Oleg Ismailovich …

The Cracid Newsletter 1(1)-5 (1991-1997), Iucn, Birdlife International, Wpa Cracid Specialist Group

Galliformes Specialist Group and Affiliated Societies: Newsletters

Volume1, Number 1 (Autumn 1991)

Editors: Angela Schmitz and Richard Buchholz

Status of the highly endangered white-winged guan Penelope albipennis, Victor Raul Diaz Montes

Formation of the WPA-ICBP-SSC-IUCN Cracidae Specialist Group

Cracidae Specialist Group Policy Statement

CSG Action Plan, 1990-1995

Cracid news from around the world: Central America, South America, Europe, and USA

Volumen 2, Numero 2 (Junio 1993)

Editores: Angela Schmitz and Richard Buchholz

Primer intento de introducción de un crácido en peligro, Geer Scheres

El pavon Oreoplasis derbianus protegido y desprotegido, Fernando González García

Técnicas demográficas de posible uso en crácidos, David B. McDonald

Noticias desde el …

Wpa News 31 (1991), World Pheasant Association

Galliformes Specialist Group and Affiliated Societies: Newsletters

WPA News (January 1991), number 31

Published by the World Pheasant Association

Ec91-269 Domestic Poultry Feed Formulation Guide, Earl W. Gleaves

University of Nebraska-Lincoln Extension: Historical Materials

Extension circular 91-269 is about domestic poultry feed formulation guide.

Preserved Grasshopper Fauna Of Knife Point Glacier, Fremont County, Wyoming, U.S.A., Jeffrey A. Lockwood, Craig D. Thompson, Larry D. Debrey, Charles M. Love, Richard A Nunamaker, Robert E. Pfadt

Entomology Papers from Other Sources

In 1987 and 1988, samples of preserved insects were extracted from the ice of Knife Point Glacier, Fremont County, Wyoming. The glacier lies at an altitude of 3500 m a.s.l. in the Shoshone National Forest, Wind River Range, and is known to contain preserved insects. Although the glacier has undergone extensive recession in the last 50 yr, some insect deposits are still embedded at 20 to 25 cm below the surface and perhaps much deeper. The frozen deposits appear to consist entirely of grasshoppers. A few, virtually intact, specimens and body parts were in a state of preservation that allowed …

Cc359 Food, Agriculture, Conservation, And Trade Act Of 1990 : An Overview Part Ii - The Conservation Provisions (Title Xiv), A. L. Frederick

University of Nebraska-Lincoln Extension: Historical Materials

Campaign Circular 359 focuses on the conservation provisions contained in the food, agriculture, conservation, and trade act of 1990.