Digital Commons Network^™

First Record Of Pseudorabies In Feral Swine In Nebraska, Sam Wilson, Alan R. Doster, Justin D. Hoffman, Scott E. Hygnstrom

School of Natural Resources: Faculty Publications

In 2007, two new populations of feral swine were discovered in Nance and Valley counties, Nebraska, USA. Necropsies and serologic testing was done on two individuals from the Nance County herd. Results indicated that a lactating sow had positive antibodies for pseudorabies virus (PRV). Investigations conducted by Nebraska Game and Parks Commission Law Enforcement division confirmed that the infected individual was transported illegally to Nebraska, USA, from Texas, USA. All domestic swine herds located within an 8 km radius of the infected individual tested negative for antibodies to PRV. Our results provide a clear example of how diseases can spread …

Nutrient Uptake And Mineralization During Leaf Decay In Streams – A Model Simulation, J. R. Webster, J. D. Newbold, Steven A. Thomas, P. J. Mulholland

School of Natural Resources: Faculty Publications

We developed a stoichiometrically explicit computer model to examine how heterotrophic uptake of nutrients and microbial mineralization occurring during the decay of leaves in streams may be important in modifying nutrient concentrations. The simulations showed that microbial uptake can substantially decrease stream nutrient concentrations during the initial phases of decomposition, while mineralization may produce increases in concentrations during later stages of decomposition. The simulations also showed that initial nutrient content of the leaves can affect the stream nutrient concentration dynamics and determine whether nitrogen or phosphorus is the limiting nutrient. Finally, the simulations suggest a net retention (uptake > mineralization) of …

Spring Home Ranges Of White Bass In Irrigation Reservoirs Of The Republican River Basin, Nebraska, D. R. Martin, Larkin A. Powell, Kevin L. Pope

School of Natural Resources: Faculty Publications

Fishery biologists have documented small home ranges, relative to available habitat, for many littoral freshwater fishes. Home ranges for pelagic species, such as white bass Morone chrysops, are generally not well described, yet are thought to be large. We studied white bass movement using acoustic telemetry in two irrigation reservoirs of the Republican River basin in south-western Nebraska. Acoustic transmitters were implanted in fall of the previous year and tracking occurred a minimum of once per week throughout spring (mid-March to May) 2007 and 2008. Linear home ranges were calculated from observed locations of individual fish. Twelve of the …

Integrating Remote Sensing And Geographic Information Systems, James W. Merchant, Sunil Narumalani

School of Natural Resources: Faculty Publications

Remote sensing and geographic information systems (GIS) comprise the two major components of geographic information science (GISci), an overarching field of endeavor that also encompasses global positioning systems (GPS) technology, geodesy and traditional cartography (Goodchild 1992, Estes and Star 1993, Hepner et al. 2005). Although remote sensing and GIS developed quasi-independently, the synergism between them has become increasingly apparent (Aronoff 2005). Today, GIS software almost always includes tools for display and analysis of images, and image processing software commonly contains options for analyzing ‘ancillary’ geospatial data (Faust 1998). The significant progress made in ‘integration’ of remote sensing and GIS has …

Variability Of Anaerobic Animal Waste Lagoon Delta15N Source Signatures, Sadayappan Mariappan, Mary Exner Spalding, Glen E. Martin, Roy F. Spalding

School of Natural Resources: Faculty Publications

High ammonium-N concentrations derived from animal wastes stored and partially treated in earthen anaerobic lagoons at confined feeding facilities can seep to groundwater. δ¹⁵N-NH₄⁺ values from +2.0 to +59.1‰ in 13 lagoons complicate identification of lagoon seepage as well as land-applied lagoon effluent in ground and surface waters. The spectrum of δ¹⁵N values requires site-specific isotope characterization of the potential source. Feed and fresh manure and urine δ¹⁵N values indicate that most N isotopic fractionation occurs after excretion. Lagoon management clearly affects enrichment. δ¹⁵N-total Kjeldahl N (TKN) and δ^{15 …}

The Watershed As A Conceptual Framework For The Study Of Environmental And Human Health, Alan S. Kolok, Cheryl L. Beseler, Xun-Hong Chen, Patrick J. Shea

School of Natural Resources: Faculty Publications

The watershed provides a physical basis for establishing linkages between aquatic contaminants, environmental health and human health. Current attempts to establish such linkages are limited by environmental and epidemiological constraints. Environmental limitations include difficulties in characterizing the temporal and spatial dynamics of agricultural runoff, in fully understanding the degradation and metabolism of these compounds in the environment, and in understanding complex mixtures. Epidemiological limitations include difficulties associated with the organization of risk factor data and uncertainty about which measurable endpoints are most appropriate for an agricultural setting. Nevertheless, it is our contention that an adoption of the watershed concept can …

Field System For Isoflurane Anesthesia Of Multiple Species Of Mesopredators, Larkin A. Powell

School of Natural Resources: Faculty Publications

isoflurane is one of many chemical immobilizing agents available for field anesthesia of wildlife. We examined the use of inhaled isoflurane for field immobilization of mesopredators. Five species of mammals were anesthetized in a wetland complex in south-central Nebraska with isoflurane; we developed an induction chamber to use with a portable anesthesia machine to provide anesthesia at the capture location. Sixteen raccoons (Procyon lotor), 20 striped skunks (Mephitis mephitis), 4 Virginia opossums (Didelphis virginiana), 2 American badgers (Taxidea taxus) and 1 mink (Mustela vison) were captured and immobilized; we radio-marked 11 raccoons and 9 skunks. Induction was smooth and uneventful …

Using Reflection Documents To Assess Student Learning, Larkin A. Powell

School of Natural Resources: Faculty Publications

Traditional assessment methods such as tests and essays may not be adequate to evaluate students’ ability to solve problems and think critically. I developed a qualitative assessment technique for a junior-level Wildlife Management Techniques course that incorporated written responses in a pre- and post-course reflection exercise. I provided the students with three reflection documents: (1) an historic photograph of Nebraska waterfowl hunters, (2) a short reading from Aldo Leopold’s Sand County Almanac, and (3) a memo on wetland habitat management from a state wildlife agency. I evaluated students’ pre- and post-course responses to a series of questions about these …

The Role Of Learning Styles In Student Evaluations Of A Problem-Based Learning Course, Larkin A. Powell

School of Natural Resources: Faculty Publications

I investigated the relationship between student learning styles and student evaluations of problem-based learning in a wildlife ecology and management course. I used two surveys for my inquiry: an on-line survey to determine student learning preferences, and an end-of-course survey of student reactions to problem-based learning (PBL). Forty-one students completed both surveys, and students’ learning preferences varied. I found significant relationships between learning preferences and student evaluation of PBL. Students with more active learning preferences found more value in the group learning experiences in my course. Group learning is often a critical component in problem-based learning courses, and my inquiry …

Ecological Divergence Of Two Sympatric Lineages Of Buggy Creek Virus, An Arbovirus Associated With Birds, Charles R. Brown, Abinash Padhi, Amy T. Moore, Mary Bomberger Brown, Jerome E. Foster, Martin Pfeffer, Valerie A. O'Brien, Nicholas Komar

School of Natural Resources: Faculty Publications

Most arthropod-borne viruses (arboviruses) show distinct serological subtypes or evolutionary lineages, with the evolution of different strains often assumed to reflect differences in ecological selection pressures. Buggy Creek virus (BCRV) is an unusual RNA virus (Togaviridae, Alphavirus) that is associated primarily with a cimicid swallow bug (Oeciacus vicarius) as its vector and the Cliff Swallow (Petrochelidon pyrrhonota) and the introduced House Sparrow (Passer domesticus) as its amplifying hosts. There are two sympatric lineages of BCRV (lineages A and B) that differ from each other by .6% at the nucleotide level. Analysis of 385 …

2009 Interior Least Tern And Piping Plover Monitoring, Research, Management, And Outreach Report For The Lower Platte River, Nebraska, Mary Bomberger Brown, Joel G. Jorgensen

School of Natural Resources: Faculty Publications

This document reports on our monitoring, research, management, and outreach activities during the past 12 months (2009). We prepared it to inform our partners, cooperating agencies, funding sources, and other interested parties of our activities and to provide a preliminary summary of our results.

The Tern and Plover Conservation Partnership (TPCP), based at the University of Nebraska–School of Natural Resources, and the Nongame Bird Program (NBP), based at the Nebraska Game and Parks Commission (NGPC) work cooperatively on Interior Least Tern and Piping Plover monitoring, research, management, and education-outreach activities. While the proximate focus of our work is the Lower …

Lithobates Catesbeianus (American Bullfrog) Predation On Cliff Swallows, Mary Bomberger Brown, Charles R. Brown

School of Natural Resources: Faculty Publications

During a 25-year study of Cliff Swallows (Petrochelidon pyrrhonota) in southwestern Nebraska, we observed Lithobates catesbeianus prey on, or attempt to prey on, Cliff Swallows. As we were mist-netting Cliff Swallows at a 10-nest colony on 7 July 1998, a L. catesbeianus attempted to eat a Cliff Swallow that was caught in the net.

Lichen Recovery Following Heavy Grazing By Reindeer Delayed By Climate Warming, David R. Klein, Martha Shulski

School of Natural Resources: Faculty Publications

Introduced reindeer, Rangifer tarandus, over exploited lichen-rich plant communities on St. Matthew Island in the Bering Sea. A die-off of the reindeer followed, exacerbated by extreme weather in 1964, resulting in extirpation of the reindeer. A similar pattern of removal of lichens as major components of plant communities has occurred following introductions of reindeer to other islands at high latitudes. By 1985, two decades following die-off of the reindeer, total lichen biomass was only 6% of that in similar plant communities on adjacent Hall Island, not reached by the reindeer. By 2005, 41 y after the reindeer die-off, lichen …

The Lion 2009, Langston University

LU Yearbooks, 2000-2009

No abstract provided.

Higher Education Tuition Assistance And Work In West Virginia 2008, George Hammond, Adam Hoffer

Bureau of Business & Economic Research

No abstract provided.

West Virginia Property Tax Briefing Paper, Amy Higginbotham, Arzu Sen, Tami Gurley-Calvez

Bureau of Business & Economic Research

No abstract provided.

United States: The Emergence Of Environmental Considerations, Sandra Zellmer

Nebraska College of Law: Faculty Publications

This essay traces the emergence of environmental considerations in U.S. water law, beginning with colonial America and proceeding through the Gilded Age of industrialization, the Progressive Era of wise use, the New Deal and the rise of the federal administrative state, and the modern environmental era. Early on, environmental challenges were addressed haphazardly. The federal government influenced water policy through navigational enhancements, reclamation works, and flood control, while state and local law governed water rights and public health issues. The 1970s brought uniform federal effluent limitations and protections for endangered species. The dawn of the twenty-first century increasingly sees collaborative …

Developing Online Training Materials In Molecular Biology: Enhancing Hands-On Lab Skills., Rachel Boulay, Cynthia Anderson, Alex Parisky, Chris Campbell

Education Conference Papers

A well-accepted form of educational training offered in molecular biology is participation in active research laboratories. However, this approach to learning severely restricts access. Addressing this need, the University of Hawaii launched a project to expand this model to include newly developed online training materials in addition to a hands-on laboratory experience. This paper explores the process of material development and assessment plans. A pilot case study of a science teacher who embarks on learning molecular biology over a four-month period through online training materials and working side-by-side with medical researchers in a laboratory is described. Feedback suggested that the …

Host Density And Human Activities Mediate Increased Parasite Prevalence And Richness In Primates Threatened By Habitat Loss And Fragmentation, David N. M. Mbora, Mark A. Mcpeek

Biology

1. Habitat loss and fragmentation are the principal causes of the loss of biological diversity. In addition, parasitic diseases are an emerging threat to many animals. Nevertheless, relatively few studies have tested how habitat loss and fragmentation influence the prevalence and richness of parasites in animals. 2. Several studies of nonhuman primates have shown that measures of human activity and forest fragmentation correlate with parasitism in primates. However, these studies have not tested for the ecological mechanism(s) by which human activities or forest fragmentation influence the prevalence and richness of parasites. 3. We tested the hypothesis that increased host density …

A Longitudinal Investigation Of The Relationships Amongst Antibody Response To Influenza Vaccination, Affect, And Stress In The Elderly, Joanne Hash-Converse

Psychology

We examined the cross-sectional and longitudinal relationships amongst affect, stress exposure, and antibody (Ab) response to influenza inoculation in a healthy, elderly sample. We explored both efferent (CNS on immune activity) and afferent (immune activity on CNS function) pathways. Negative (NA) and positive (PA) affective states were examined in relation to Ab response, positing that high baseline NA (State, SNA, but not Trait, TNA) would predict reduced Ab response and that PA would predict enhanced response, and that the reduced Ab response in individuals displaying high baseline SNA would associate with decreases in NA. Moderator (for psychogenic and systemic stress) …

In Silico Whole Genome Association Scan For Murine Prepulse Inhibition, Bradley Todd Webb, Joseph L. Mcclay, Cristina Vargas-Irwin, Timothy P. York, Edwin J. C. G. Van Den Oord

Biomarker Research and Personalized Medicine Publications

Background

The complex trait of prepulse inhibition (PPI) is a sensory gating measure related to schizophrenia and can be measured in mice. Large-scale public repositories of inbred mouse strain genotypes and phenotypes such as PPI can be used to detect Quantitative Trait Loci (QTLs) in silico. However, the method has been criticized for issues including insufficient number of strains, not controlling for false discoveries, the complex haplotype structure of inbred mice, and failing to account for genotypic and phenotypic subgroups.

Methodology/Principal Findings

We have implemented a method that addresses these issues by incorporating phylogenetic analyses, multilevel regression with mixed …

Menorah Review (No. 70, Winter/Spring, 2009)

Menorah Review

A Poem by Richard E. Sherwin -- Believing Christian... Agnostic Believer -- From the Classics -- New and Notable Books -- Oy Vey Is Mir -- The Ancient Grudge: The Merchant of Venice and Shylock's Christian Problem

Preparation And Characterization Of Protein-Nanotube Conjugates, Jonathan S. Dordick, Dhiral A. Shah, Ravindra C. Pangule, Shyam Sundhar Bale, Prashanth Asuri, Amit Joshi, Akhilesh Banerjee, David Vance, Ravi S. Kane

Bioengineering

This chapter describes methods of immobilizing proteins on carbon nanotubes, using two different routes—physical adsorption and covalent attachment. We also provide an overview on how such conjugates can be characterized with the help of various techniques, such as Raman, Fourier transform infrared (FT-IR), circular dichroism (CD), and fluorescence spectroscopies, in addition to the standard enzyme kinetic analyses of activity and stability. Both the attachment routes—covalent and noncovalent—could be used to prepare protein conjugates that retained a significant fraction of their native structure and function; furthermore, the protein conjugates were operationally stable, reusable, and functional even under harsh denaturing conditions. These …

The Redwood, V.105 2008-2009, Santa Clara University

The Redwood

No abstract provided.

Waiving Good-Bye To Environmental Laws Along The Arizona Borderlands. Defenders Of Wildlife V. Chertoff , Tana M. Sanchez

Journal of Environmental and Sustainability Law

No abstract provided.

Environmental Law Updates

Journal of Environmental and Sustainability Law

No abstract provided.

Southern Accent September 2009- April 2010, Southern Adventist University

Southern Accent - Student Newspaper

Southern Adventist University's newspaper, Southern Accent, for the academic year of 2009-2010.

Unraveled Fall 2009, Southern Adventist University

Unraveled - School of Education and Psychology Newsletter

The Fall 2009 issue of Unraveled contains articles on the retirement of Dr. Alberto dos Santos, Southern's academic journal, the outdoor leadership program, and cultural connections.

Com Outlook Winter 2009, College Of Osteopathic Medicine

COM Outlook

No abstract provided.

The Nova Southeastern Lawyer, 2009, Volume 12, Number 11, Nova Southeastern University - Shepard Broad Law Center

Nova Lawyer

No abstract provided.