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An Ecological Risk Assessment Of Lead Shot Exposure In Non-Waterfowl Avian Species: Upland Game Birds And Raptors, Ronald J. Kendall, Thomas E. Lacher Jr., Christine Bunck, Bernard Daniel, Crystal Driver, Christian E. Grue, Frederick Leighton, William Stansley, Philip G. Watanabe, Molly Whitworth

United States Environmental Protection Agency: Publications

There is increasing concern that birds in terrestrial ecosystems may be exposed to spent lead shot. Evidence exists that upland birds, particularly mourning doves (Zenaida macroura), ingest spent lead shot and that raptors ingest lead shot by consuming wounded game. Mortality, neurological dysfunction, immune suppression, and reproductive impairment are documented effects of exposure to lead in birds. An ecological risk assessment on the impact of lead shot exposure in upland birds was conducted and is presented in the context of the new United States Environmental Protection Agency’s Ecological Risk Assessment Paradigm. A considerable amount of spent lead shot …

Approximation Of Biodegradation Rate Constants For Monoaromatic Hydrocarbons (Btex) In Ground Water, Todd Weidemeier, Matthew Swanson, John Wilson, Donald Kampbell, Ross Miller, Jerry Hansen

United States Environmental Protection Agency: Publications

Two methods were used to approximate site-specific biodegradation rates of monoaromatic hydrocarbons (benzene, toluene, ethylbenzene, and xylenes [BTEX]) dissolved in ground water. Both use data from monitoring wells and hydrologic properties of the aquifer to estimate a biodegradation rate constant that can be sued in ground water solute fate and transport models. The first method uses a biologically recalcitrant tracer in the ground water, associated with the hydrocarbon plume to normalize changes in concentration of BTEX under anaerobic conditions; attenuation of the tracer is attributed to dilution, sorption, and/or volatilization. Attenuation of BTEX in excess of the attenuation of the …

Valentine National Wildlife Refuge 1996

United States Fish and Wildlife Service: Publications

NTRODUCTION

Valentine National Wildlife Refuge (NWR) was established on August 4, 1935 under the Migratory Bird Conservation Act by Executive Order 7142. The purpose of the refuge as stated in the executive order is “as a refuge and breeding ground for migratory birds and other wildlife.” Acquisition funding came from Duck Stamp sales and the Emergency Conservation Fund Of 1933.

The 71,272-acre Valentine NWR is located in the Sandhills of north-central Nebraska. The Sandhills contain the largest remaining stands of mid and tall grass native prairie left in North America. The refuge is a unique and ecologically important component of …

Observations On Bats At Badlands National Park, South Dakota, Michael A. Bogan, Jeffrey G. Osborne, Jennifer A. Clarke

United States Geological Survey: Staff Publications

During the summers of 1992 and 1993, we conducted a survey of bats at Badlands National Park, South Dakota. Using mist nets, we captured bats and recorded species, sex, age class, and reproductive condition for each individual netted. We recorded five species, Myotis ciliolabrnm (n = 198), M. thysanodes (29), M volans (13), Eptesicus foscus (91), and Plecotus tawnsendii (43), previously known from the park. In addition, we added four species, M lucifugus (18), M. septentrionalis (9), Lasionycteris noctivagans (1), and Lasiurns cinereus (3) to the confirmed fauna of the park. Most bats captured were male (76.3%) although maternity colonies …

Origin Of Bermuda's Clay-Rich Quaternary Paleosols And Their Paleoclimatic Significance, Stanley R. Herwitz, Daniel R. Muhs, Joseph M. Prospero, Shannon Mahan, Bruce Vaughn

United States Geological Survey: Staff Publications

Saharan dust deposition on Bermuda during successive Quaternary glacial periods is consistent with patterns of general circulation models, which indicate that during glacial maxima the northeast summer trade winds were stronger than at present and reached latitudes higher than 30°N despite lower-than-present sea surface temperatures in the North Atlantic.

Activation Of Shiga-Like Toxins By Mouse And Human Intestinal Mucus Correlates With Virulence Of Enterohemorrhagic Escherichia Coli O91:H21 Isolates In Orally Infected, Streptomycin-Treated Mice, Angela R. Melton-Celsa, Stephen C. Darnell, Alison D. O'Brien

Uniformed Services University of the Health Sciences

The enterohemorrhagic Escherichia coli (EHEC) O91:H21 isolates B2F1 and H414-36/89 are virulent in an orally infected streptomycin-treated mouse model. Previous studies demonstrated that B2F1 and H414-36/89 grow to high levels in mucus isolated from the mouse small intestine and colon and that growth in smallintestinal mucus is related to virulence. We measured the levels of Shiga-like toxins (SLTs) SLT-IIvha and SLT-IIvhb produced by B2F1 after growth in Luria-Bertani (LB) broth supplemented with mouse intestinal mucus by assaying the cytotoxicity of culture supernatants on Vero cells. Culture supernatants from B2F1 grown in mouse intestinal mucus, but not EHEC strains that produce …

1996 Platte River Basin Ecosystem Symposium Proceedings

Water Current Newsletter

No abstract provided.

1995 Nebraska Swine Enterprise Records Program Results, Dale Kabes, Mike Brumm, Larry Bitney

Nebraska Swine Reports

Data from cooperators participating in the Nebraska Swine Enterprise Records and Analysis Program were summarized for the period January to June 1995 and July 1, 1994 to June 30, 1995. Results continue to show significant variability in production and financial parameters among individual swine enterprises. The results indicate that efficient, well managed swine enterprises can be profitable and competitive in a dynamic industry.

1996 Nebraska Swine Report

Nebraska Swine Reports

1996 Nebraska Swine Report

Comparison Of Two Roadside Survey Procedures For Dwarf Mistletoes On The Sawtooth National Forest, Idaho, Robert L. Mathiasen, James T. Hoffman, John C. Guyon, Linda L. Wadleigh

United States Department of Agriculture, Forest Service / University of Nebraska-Lincoln: Faculty Publications

Two roadside surveys were conducted for dwarf mistletoes parasitizing lodgepole pine and Douglas-fir on the Sawtooth National Forest, Idaho. One survey used variable-radius plots located less than 150 m from roads. The 2nd survey used variable-radius plots established at 200-m intervals along 1600-m transects run perpendicular to the same roads. Estimates of the incidence (percentage of trees infected and percentage of plots infested) and severity (average dwarf mistletoe rating) for both lodgepole pine and Douglas-fir dwarf mistletoes were not significantly different for the 2 survey methods. These findings are further evidence that roadside-plot surveys and transect-plot surveys conducted away from …

Characterization Of The Lymantria Dispar Nucleopolyhedrovirus 25k Fp Gene, David S. Bischoff, James M. Slavicek

United States Department of Agriculture, Forest Service / University of Nebraska-Lincoln: Faculty Publications

The Lymantria dispar nucleopolyhedrovirus (Ld/V/NPV) gene encoding the 25K FP protein has been cloned and sequenced. The 25KFP gene codes for a 217 amino acid protein with a predicted molecular mass of 24870 Da. Expression of the 25K FP protein in a rabbit reticulocyte system generated a 27 kDa protein, in close agreement with the molecular mass predicted from the nucleotide sequence. The gene is located between 40"3 and 40.8 map units on the viral genome. It is transcribed in a counterclockwise direction with respect to the circular map at late times during the infection cycle from a consensus baculovirus …

First Report Of Wolffiella Lingulata (Lemnaceae) In Western Mexico, T. L. Morgan, Jeffrey R. Stevens, W. C. Holmes

Department of Psychology: Faculty Publications

Recent field collecting yielded specimens of Wolffielia lingulata from four different locations in Jalisco, thus the genus may now be considered as part of the flora of Nueva Galicia. In the following list of exsiccata, geographical coordinates and elevations were taken with a global positioning system. All CES numbered specimens were collected under the supervision of W. C. Holmes by the aquatic botany class of the Chapala Ecology Station (CES). The Chapala Ecology Station is operated by the Universidad Autonoma de Guadalajara and Baylor University.

New County Records Of Botrychium Lunarioides In Texas., L. H. Do, R. D. Gooch, Jeffrey R. Stevens, W. C. Holmes, J. R. Singhurst

Department of Psychology: Faculty Publications

Recent collections of B. lunarioides in east-central Texas indicate that the species is more widespread within the state (Fig. 1). Other than for Navarro County, the new records are in the Post Oak Savannah Region of the state, with the Navarro County location classified as being within the Blackland Prairie Region or in part of an extension of the Post Oak Woods/Forest in the Blackland Prairie Region. All specimens previously cited by Thomas (1979) and Thomas et al. (1981) were from the eastern part of the Pineywoods Region. The San Augustine site is about 32 km from the state line …

Domestic Well-Water Quality In Rural Nebraska, D. C. Gosselin, J. Headrick, X. H. Chen, S. Summerside, R. Tremblay, K. Bottger

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Nebraska Summary: S297 Valmet 8550, 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 …

Nebraska Summary: S253 New Holland 8560, 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 …

Nebraska Summary: S251 New Holland 8360, 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 …

Nebraska Summary: S246 New Holland 6635, 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 …

Nebraska Summary: S245 New Holland 5635, 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 …

Nebraska Summary: S259 Case-Ih Mx 135, 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 …

Nebraska Summary: S284 New Holland 9882, 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 …

Scale Issues In Soil Moisture Modelling: Problems And Prospects, Rezaul Mahmood

School of Natural Resources: Faculty Publications

Soil moisture storage is an important component of the hydrological cycle and plays a key role in land-surface-atmosphere interaction. The soil-moisture storage equation in this study considers precipitation as an input and soil moisture as a residual term for runoff and evapotranspiration. A number of models have been developed to estimate soil moisture storage and the components of the soil-moisture storage equation. A detailed discussion of the implication of the scale of application of these models reports that it is not possible to extrapolate processes and their estimates from the small to the large scale. It is also noted that …

Analytical Perspectives On A Protohistoric Cache Of Ceramic Jars From The Lower Colorado Desert, James Bayman, Richard Hevly, Boma Johnson, Karl J. Reinhard, Richard Ryan

Department of Anthropology: Faculty Publications

A cache of hermetically sealed ceramic jars found in the Lower Colorado Desert was examined using chronometric dating, pollen and macrofossil extraction, design analysis, and water retention experimentation. The cache apparently dates to the protohistoric fifteenth through seventeenth centuries. Findings from these studies contribute to knowledge in four problem areas: (1) ceramic jar function and use-history; (2) storage technology and caching behavior; (3) ceramic dating and chronology; and (4) symbolic iconography. Biotic remains from inside the jars document their use for transporting a variety of riverine and desert plants, before they were finally filled with flowers and seeds, and placed …

Costs And Benefits Of Monogamy And Polygyny For Yanomamö Women, Raymond B. Hames

Department of Anthropology: Faculty Publications

In this paper I analyze some of the economic costs and benefits of monogamy and polygyny for Yanomamö women. The evolutionary ecological model of resource defense polygyny predicts that when female choice is operative females will choose those males who control resources that will maximize a female’s reproductive success. A female will choose a polygynous strategy (i.e., become a co-wife) if a currently married male has more resources to offer than other unmarried males or monogamous males. This model has been successfully used to predict polygynous mating in tribal societies where males are stratified in terms of their ownership or …

A Gene Correlate Of Geotaxis Near Adh (2-50.1) In Drosophila Melanogaster, Scott F. Stoltenberg, Jerry Hirsch

Department of Psychology: Faculty Publications

As part of a long-term study (38+ years) to identify genetic correlates of geotaxis in Drosophila melanogaster, the investigators report the results of allozyme-level analyses of 2 lines derived from hybridizing high- and low-selected lines that have evolved stable, extreme expressions of geotaxis. Allelic variation at Adh was associated with geotactic performance in 1 hybrid-derived line, but not in another, after 66 free-mating generations beyond the F₂ generation. A second-chromosome gene correlate of geotaxis may lie within 1 map unit of Adh. Population genetic analyses suggest that there were different selection pressures on the hybrid-derived lines and …

Herland, By Charlotte Perkins Gilman, Michael R. Hill

Department of Sociology: Faculty Publications

Herland is the first half of a witty, sociologically astute critique of life in the United States. This story concentrates ostensibly on three men-Van, Jeff, and Terry-who discover a small, uncharted country called Herland which, by force of an unusual accident of nature, has been governed and populated for two thousand years solely by women. Biological reproduction occurs miraculously by parthenogenesis (that is, without insemination). Charlotte Perkins Gilman exploits this contrived situation in order to contrast and compare the social features of a hypothetical woman-centered society to the harsh realities and crushing inequalities of everyday life found pervasively in male-dominated …

Timing Of First Sexual Intercourse: The Role Of Social Control, Social Learning, And Problem Behavior, Lisa J. Crockett, C. Raymond Bingham, Joanne S. Chopak, Judith R. Vicary

Department of Psychology: Faculty Publications

Prior research has pointed to several distinct processes that may affect the timing of first intercourse among adolescents. In the present study, the role of six hypothesized processes was assessed in a sample of 289 rural adolescent boys and girls. Results support the importance of family socialization and problem behavior for both sexes, the role of biological factors for boys, and the role of social control processes for girls. Two other hypothesized influences--social class and poor psychosocial adjustment--were not supported in either gender. These results indicate that multiple processes influence the timing of first intercourse; thus, they underscore the need …

Mitochondrial Dna Variation In Screwworm, David B. Taylor, Allen L. Szalanski, Richard D. Peterson Ii

Department of Entomology: Faculty Publications

Polymerase chain reaction-restriction fragment length polymorphism (PCRRFLP) analysis was used to characterize mitochondrial DNA (mtDNA) variation in screwworms, Cochliomyia hominivorax, and secondary screwworm, C. macellaria, from the Caribbean, North America and South America. Four amplicons, totaling 7.1 kb, were analysed with sixteen restriction enzymes. A total of 133 restriction sites was observed in the two species, 104 in C. hominivorax, of which nineteen were variable, and ninety-five in C. macellaria, none of which was variable. Fourteen mtDNA haplotypes were observed among eighteen C. hominivorax examined. Mean divergence between C. hominivorax haplotypes (d) was 0.0064 …

Oviposition And Calling Behavior Of Codling Moth (Lepidoptera: Tortricidae) In The Presence Of Codlemone, Thomas J. Weissling, Alan L. Knight

Department of Entomology: Faculty Publications

The effect of the major component of codling moth, Cydia pomonella (L.) sex pheromone (codlemone, E,E-8,10-dodecadien-l-ol) on female calling and oviposition behavior was investigated. Calling by virgin females was similar between moths placed in sealed containers containing codlemone or codlemone-free air. However, when pheromone emitted by females was removed by a continuous air stream, calling in codlemone-permeated air was significantly higher than in clean air. The temporal pattern of calling was unaltered by the presence of codlemone. In a laboratory no-choice test, oviposition rates by codling moth females were similar in the presence of codlemone and in codlemone-free air. However, …

Molecular Differentiation Of Alfalfa Weevil Strains (Coleoptera: Curculionidae), S. J. Erney, K. P. Pruess, S. D. Danielson, T. O. Powers

Department of Entomology: Faculty Publications

Mitochondrial DNA was amplified and sequenced from eastern, western, and Egyptian strains of alfalfa weevil, Hypera postica (Gyllenhal). Eastern and Egyptian weevils differed at only 2 nucleotide sites in 1,031 base pairs sequenced; western weevils differed by 5% sequence divergence. Three restriction sites were identified which separated eastern and western haplotypes. No intrastrain polymorphism was detected in 150 weevils from Nebraska. Collections from Lincoln in eastern Nebraska and Scottsbluff in western Nebraska were fixed for the eastern and western haplotypes, respectively. Eastern and western haplotypes were found together in the same fields in a broad overlap region in central Nebraska.