Digital Commons Network^™

Dynamics Of Green Ash Woodlands In Theodore Roosevelt National Park, Lynn R. Irby, Jack E. Norland, Mark G. Sullivan, Jerry A. Westfall, Jr., Paula Andersen

United States National Park Service: Publications

Green ash (Fraxinus pennsylvanica Marsh.) communities are valuable as sources of biological diversity and shelter for livestock in the Northern Great Plains. Excessive use of stands by livestock tends to convert these woodland communities to less valuable shrublands. We monitored 12 green ash stands in Theodore Roosevelt National Park (TRNP) from 1985 through 1996 to determine changes in species composition, plant density, and canopy coverage in green ash communities that were protected from livestock but exposed to foraging by native ungulates. Over the 12-year sampling period, density of choke cherry (Prunus virginiana L.) and Saskatoon service-berry (Amelanchier …

Planning For Multi-Purpose Riparian Management, Gary Bentrup, Mike Dosskey, Kelly Klenke, Tim Leininger, Michele Schoeneberger, Gary Wells

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

Proper riparian management can provide numerous environmental, social, and economic benefits. At the USDA National Agroforestry Center, we are tailoring the land-use planning process to facilitate riparian management in the Western Corn Belt ecoregion for multiple benefits. This planning framework integrates regional, landscape and site scale planning approaches into a unified framework. In this framework, regional and landscape-scale public issues are addressed along with site-scale landowner objectives to facilitate balanced management plans providing broad mutual benefits. Our question-driven framework provides general guidance for inventory and analysis, preparation of planning objectives, and development and evaluation of management options. To support the …

The Open Reading Frame 5a Of Foxtail Mosaic Virus Is Expressed In Vivo And Is Dispensable For Systemic Infection, N.L. Robertson, Roy C. French, Thomas Jack Morris

Department of Plant Pathology: Faculty Publications

Infectious transcripts were successfully derived from full-length cDNA clones of foxtail mosaic potexvirus (FoMV). Full-length clones were constructed by RT-PCR whereby 50 and 30 genomic segments of 2.7 and 3.4 kb, respectively, were ligated into Bluescript II KS. The in vitro RNA transcripts were infectious to moncotyledonous (barley) and dicotyledonous (Chenopodium amaranticolor) plant species. Individual mutation studies on clones of each of the five major ORFs confirmed predicted gene function for the polymerase, TGB (triple gene block), and coat protein (CP) genes. Protoplast studies on expression of a unique open reading frame, ORF 5A, which initiates 143 nts …

The Eos Prototype Validation Exercise (Prove) At Jornada: Overview And Lessons Learned, J. L. Privette, G. P. Asner, J. Conel, K. F. Huemmrich, R. Olson, A. Rango, A. F. Rahman, K. Thome, Elizabeth A. Walter-Shea

School of Natural Resources: Faculty Publications

The Earth Observing System (EOS) instrument teams must validate the operational products they produce from the Terra spacecraft data. As a pilot for future validation activities, four EOS teams (MODIS, MISR, ASTER, and Landsat-7) and community experts conducted an 11-day field campaign in May 1997 near Las Cruces, NM. The goals of the Prototype Validation Exercise (PROVE) included (1) gaining experience in the collection and use of field data for EOS product validation; (2) developing coordination, measurement, and data-archiving protocols; and (3) compiling a synoptic land and atmospheric data set for testing algorithms. PROVE was held at the USDA-Agricultural Research …

A New Species Of Angulopis (Lycaenidae, Eumaeini) From Relict Coastal Forest In East-Central Argentina, Gustavo Canals, Kurt Johnson

The Taxonomic Report of the International Lepidoptera Survey

Angulopis puntalaraensis is described from a single female specimen collected between 1950 and 1955 in the National Reserve Punta Lara, Buenos Aires Province, Argentina. This site is a relict of coastal gallery forest. No other specimens are known.

Description Of A New Subspecies Of Poanes Aaroni (Hesperioidae: Hesperiinae) From The West Central Gulf Coast Of The Southern United States, Ronald R. Gatrelle

The Taxonomic Report of the International Lepidoptera Survey

Poanes aaroni bordeloni is described from Jefferson County, Texas, United States. This taxon is part of a lepidopteran community endemic to the west central area of the United States Gulf Coast between Mobile Bay, Alabama and Galveston Bay, Texas. As such, bordeloni is defined taxonomically by its evolutionary development as much as by its facies. Bordeloni is the largest aaroni subspecies. Bordeloni males are marked much like those of P. a. howardi both dorsally and ventrally. Bordeloni females usually have the fulvous spotting on the dorsal forewings reduced as in P. a. minimus females while …

Strategy For The Conservation Of Non-Game Birds In The State Of Nebraska, Jacqueline Lee Canterbury

Department of Animal Science: Dissertations, Theses, and Student Research

Non-game birds comprise 93% of the 831 species recorded in the U.S; of these, forest birds and neotropical migrants have received considerable attention. To develop a management plan for non-game birds in Nebraska, historically a predominately grassland ecosystem, it was necessary to determine species in need of conservation and assess their respective habitat status. Using BBS and PIF databases, we developed a prioritization scheme that identified 44 breeding species in need of conservation in Nebraska; 20 of the 44 are grassland birds. Because several species in need of conservation known to occur in the state were missing from these databases, …

Cloning Of The Bovine Immunodeficiency Virus Gag Gene And Development Of A Recombinant-Protein-Based Enzyme-Linked Immunosorbent Assay, Ling Zheng, Michelle Swanson, Jinghua Liao, Charles Wood, Sanjay Kapil, Ron Snider, Thomas A. Loughin, Harish Minocha

Nebraska Center for Virology: Faculty Publications

An enzyme-linked immunosorbent assay (ELISA) was established for the rapid detection of specific bovine immunodeficiency virus (BIV) antibodies in cattle, using recombinant Gag protein as an antigen. The gag coding region from BIV was cloned into an expression vector, pQE32, which expressed high levels of recombinant protein from Escherichia coli. The ELISA was standardized by a checkerboard titration against known BIV-positive and -negative sera from cattle and a monoclonal antibody to the Gag protein. A total of 139 cattle serum samples, from the diagnostic laboratory at Kansas State University, Manhattan, and from the Dairy Station, Louisiana State University, Baton …

Fish & Wildlife News: July/August 2000

Fish and Wildlife News

Contents:

Service Proposes Reclassifying Gray Wolves 2
What Happened to the Frogs? 3
Enforcing Caviar Regulations 5
Kids+Fish=Fun 6
Defining “Wildlife First” 8
Feel the Power of Partnerships 9
Tales of a Double Decker Bus 10
Refuge Legislation Pushed on the Hill 11
Hatcheries Help Paddlefish 14
Cormorants Found Dead in MI 15
Fee Program an All-Around Success 16
Fish & Wildlife...In Brief 26

Flea News 60 (July 2000), Robert E. Lewis

Flea News

Announcement: Printed copies of Flea News discontinuing

Obituary: Franciscus Gerardus Albertus Maria Smit (June 7, 1920-January 28, 2000)

Book review: Sifonapteros do Brasil, Pedro Marcois Linardi and Lindolpho Rocha Guimaraes. Sao Paulo, Museu de Zoologia USP/FAPESP, 2000.

Flea species

Literature

Miscellanea: As of January 2000 the name of the Journal of the Helminthological Society of Washington was changed to Comparative Parasitology.

New Larval Descriptions For Two Species Of Euphoria Burmeister (Coleoptera: Scarabaeidae: Cetoniinae: Cetoniini: Euphoriina) With A Key To The Known Larvae And A Review Of The Larval Biology For Species In The Genus. , Estefanía Micó, Andrew Smith, Miguel Angel Morón

University of Nebraska State Museum: Entomology Papers

The larvae of Euphoria devulsa Horn and Euphoria lurida (F.) (Coleoptera: Scarabaeidae: Cetoniinae: Cetoniini: Euphoriina) are described for the first time.The larval biology of these species and others in the genus is reviewed. A key to the 7 known species of Euphoria larvae is provided.

The Probe, Issue 211 - July/August 2000

The Probe: Newsletter of the National Animal Damage Control Association

CONTENTS:
NADCA Election Results Announced
Editor's Farewell
CALENDAR OF UPCOMING EVENTS
Bill Clay to Head Wildlife Services
Editors Farewell

Parasite Makes Rats More Vulnerable to Cats Crazed Beaver Terrorizes Farm
Mounties Don't Like Shooting Bears
Book Review: "Mammal Trapping"
PETA Attacks Wyoming License Plates

The Probe, Issue 211 - July/August 2000

The Probe: Newsletter of the National Animal Damage Control Association

CONTENTS:
NADCA Election Results Announced
Editor's Farewell
CALENDAR OF UPCOMING EVENTS
Bill Clay to Head Wildlife Services
Editors Farewell
Parasite Makes Rats More Vulnerable to Cats Crazed Beaver Terrorizes Farm
Mounties Don't Like Shooting Bears
Book Review: "Mammal Trapping"
PETA Attacks Wyoming License Plates

Scwds Briefs: Volume 16, Number 2 (July 2000)

Southeastern Cooperative Wildlife Disease Study: Publications

• CWD and Human Health: “There currently is no evidence that Chronic Wasting Disease in Cervidae is transmitted to humans”…
• SCWDS recently completed the fieldwork of a research project to investigate the epidemiology of avian vacuolar myelinopathy (AVM), previously known as the Avian Brain Lesion Syndrome (ABLS).
• NIH Funds SCWDS Ehrlichiosis Study: Since 1985, three new tickborne zoonoses caused by bacteria in the genus Ehrlichia have been recognized in the United States. Human monocytotropic ehrlichiosis (HME) caused by E. chaffeensis occurs across a broad area of the eastern and south-central United States. HME is transmitted by lone star …

Canadian Cooperative Wildlife Health Centre Newsletter, Volume 7-1, Summer 2000

Canadian Cooperative Wildlife Health Centre: Newsletters and Publications

New Staff Member - Western/Northern Regional Centre Surveillance for West Nile Virus - Summer 2000 Dorsal-spined Larvae in Cervids Organophosphate Pesticide Poisoning of Seagulls - St. John's, Newfoundland Successful euthanasia of a juvenile fin whale Psittacosis in Wild Rock Doves Walleye myopathy The St-Lawrence beluga whale: summary of lesions detected in stranded individuals submitted for necropsy during 1999 An Epizootic of Iridovirus in Oregon Spotted Frog Tadpoles (Rana pretiosa) Epidemic Avian Cholera in Double-Crested Cormorants in Saskatchewan Winter Ticks in Stone's Sheep California Bighorn Sheep in British Columbia

Swine Nutrition Guide, Duane E. Reese, Robert C. Thaler, Michael C. Brumm, Austin J. Lewis, Phillip S. Miller, George W. Libal

Department of Animal Science: Faculty Publications

This publication is a revision of the previous swine nutrition publication prepared by the University of Nebraska and South Dakota State University. The focus of the publication continues to be on nutrient recommendations for swine. Specific factors (nutritional, environmental and managerial) that affect nutrient recommendations (Figure 1) have been considered and discussed. We believe that the identification and description of the factors in Figure 1 provide the framework for the nutrient recommendations presented in Tables 11 to 16. Industry advisors representing various facets of the pork industry were recruited to review and challenge the concepts incorporated in this publication. Also, …

American Society Of Parasitologists Newsletter, V. 22, No. 2, [Summer 2000], Scott Lyell Gardner

American Society of Parasitologists: Newsletter

An issue of the American Society of Parasitologists' quarterly newsletter, also called the Journal of Parasitology Newsletter.

Nebline, July 2000

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

4-H & County Fair = Family Time
All America Rose Selections, All Time Classics
Vegetable Gardening in The Fall
Lawn and Garden Water Check List
Watch for Squash Vine Borer
EPA Curbs Dursban Uses
Money Saving Techniques to Help Save the Environment
Be Good to Your Worms
Misplaced Wildlife Become Problems in Urban Areas
Utilizing Drought-Damaged Corn
Noxious Weed Number 7
The Operations Plan
Summer Care Yields Fall Harvest
Farmers’ Markets on the Rise (Part 2)
Fertilizing Roses
WIC Works Wonders!!
Healthy Eating: Homemade Whole Wheat Croutons
Make It A S*U*P*E*R Salad Summer!
Focus on Food
Family & Community Education …

Nebraska Earth Systems Education Network – Summer 2000

Nebraska Earth Systems Education Network

Content:

“Everything is Connected to Everything Else.” by Dave Gosselin, NESEN Director

Central Plains Severe Weather Symposium 2000: Don't Miss the Opportunity; Students and Teachers Welcome! by Ken Dewey

Integrating Earth System Science Research and Education by Richard Levy

America's Farm by Charles Flowerday

Lessons From Environmental Change Workshop On-line by Mark Mesarch

New Publications and Teacher Resources Available by Judy Otteman

Reversal Of Rice Yield Decline In A Long-Term Continuous Cropping Experiment, Achim Dobermann, David Dawe, Reimund P. Roetter, Kenneth G. Cassman

Department of Agronomy and Horticulture: Faculty Publications

In a long-term continuous cropping experiment at Los Baños, Philippines, three rice (Oryza sativa L.) crops were grown each year with the goals of maximum annual grain production and high N use efficiency. Our objective was to identify the factors responsible for the restoration of yields occurring after 1991. From 1968 to 1991, grain yields declined at an annual rate of 1.4 to 2.0%. From 1991 to 1995, dry season (DS) yields in the highest N treatment increased to within 80 to 100% of the simulated yield potential; yields in the unfertilized control did not increase. Increased solar radiation, …

Carbon Nanotube-Based Nonvolatile Random Access Memory For Molecular Computing, Thomas Rueckes, Kyoungha Kim, Ernesto Joselevich, Greg Y. Tseng, Chin Li Cheung, Charles M. Lieber

Barry Chin Li Cheung Publications

A concept for molecular electronics exploiting carbon nanotubes as both molecular device elements and molecular wires for reading and writing information was developed. Each device element is based on a suspended, crossed nanotube geometry that leads to bistable, electrostatically switchable ON/OFF states. The device elements are naturally addressable in large arrays by the carbon nanotube molecular wires making up the devices. These reversible, bistable device elements could be used to construct nonvolatile random access memory and logic function tables at an integration level approaching 1012 elements per square centimeter and an element operation frequency in excess of 100 gigahertz. The …

Conservation Conundrum, Robert L. Brownell Jr., Barbara E. Curry, Peter Daszak, Andrew A. Cunningham, Alex D. Hyatt

United States Department of Commerce: Staff Publications

P. Daszak, A. A. Cunningham, and A. D. Hyatt present a convincing argument in their Review "Emerging infectious diseases of wildlife-threats to biodiversity and human health" (Science's Compass, 21 Jan., p. 443) that emerging infectious diseases (EIDs) pose a risk to wildlife, and they suggest that EIDs most often result from a change in the ecology of the pathogen or the host (or both). A situation they did not mention is that in some cases, the protection of threatened species can increase the risk of an EID outbreak by allowing a close association between wildlife and domestic animals where one …

Agricultural Research Division 114th Annual Report 2000

Agricultural Research Division: News and Annual Reports

It is a pleasure to provide you with a copy of the 114th Annual Report of the University of Nebraska Agricultural Research Division (ARD). This report is our opportunity to inform you about our research programs and accomplishments and to allow us to assess the progress and effectiveness of our collective efforts to develop new knowledge. After examining this report, we hope that you will agree with our assessment that ARD research has provided new technology and knowledge for Nebraskans that will improve the profitability of their enterprises, enhance environmental quality, and improve their quality of life.

This report provides …

Digestibility, Nitrogen Excretion, And Mean Retention Time By North American Porcupines (Erethizon Dorsatum) Consuming Natural Forages, Laura A. Felicetti, Lisa A. Shipley, Gary W. Witmer, Charles T. Robbins

United States Department of Agriculture Wildlife Services: Staff Publications

North American porcupines (Erethizon dorsatum) subsist predominantly on low-protein, high-fiber, high-tannin diets. Therefore, we measured the porcupine's ability to digest dry matter, fiber, and protein by conducting digestion trials on eight natural forages and one pelleted ration varying in concentration of fiber, nitrogen, and tannins. On these diets, dry matter intake ranged from 5 to 234 g/kg ^0.75/d and dry matter digestibility ranged from 62% to 96%. Porcupines digested highly lignified fiber better than many large hindgut fermenters and ruminants. The porcupine's ability to digest fiber may be explained, in part, by their lengthy mean retention time …

Changes In Soil Microbial Community Structure With Tillage Under Long-Term Wheat-Fallow Management, Rhae A. Drijber, John W. Doran, Anne M. Parkhurst, D. J. Lyon

Department of Agronomy and Horticulture: Faculty Publications

Fatty acid methyl esters (FAMEs) were used to `fingerprint' soil microbial communities that evolved during 25 years of wheat-fallow cropping following native mixed prairie sod at Sidney, Nebraska, USA. Total ester-linked FAMEs (EL-FAMEs) and phospholipid-linked FAMEs (PL-FAMEs) were compared for their ability to discriminate between plots remaining in sod and those cropped to wheat or left fallow under no-till, sub-till or plow management. Cropped plots were higher in microbial biomass than their fallowed counterparts, and did not differ significantly with tillage for the 0±15 cm depth. Under fallow, microbial biomass was greatest in no-till and least in plow. Both cluster …

Method And Apparatus For Controlling Acoustic Signal Bandwidth In An Ultrasonic Diagnostic Imaging System, Jeffrey R. Resnick, Gregory R. Bashford

Biomedical Imaging and Biosignal Analysis Laboratory

An ultrasonic imaging system includes a receive beamformer that generates analog receive signals and a scan converter. A receive signal processing path interconnects the receive beamformer and the scan converter, and this processing path included both an A/D converter characterized by a selectable sampling rate and at least one filter characterized by at least one filter parameter. The filter parameter is selected as a function of the sampling rate to provide enhanced image quality.

One-Trial Context Fear Conditioning With Immediate Shock: The Roles Of Transport And Contextual Cues, Rick A. Bevins, Anthony S. Rauhut, Janice E. Mcphee, John J. B. Ayres

Department of Psychology: Faculty Publications

In three experiments, using a total of 120 albino rats, we assessed whether transportation cues might evoke some of the freezing (i.e., defensive immobility) that we see in a context on a day following a footshock given immediately after placement in that context. The results suggested that immediate shock could directly condition strong fear to both simulated and actual transport cues. Although conditioning to transport cues explains some of the freezing that is seen on the test day, it does not explain all of it. We also found evidence that some of the freezing is due to conditioning to permanent …

Avoiding Piano-Related Injury: A Proposed Theoretical Procedure For Biomechanical Analysis Of Piano Technique, Brenda Wristen

Glenn Korff School of Music: Faculty Publications

Several biomechanical studies have been done with regard to the fingertip, hand, wrist, and upper arm in pianists. However, these studies have generally focused either on one isolated part of the anatomy, or on one specific motion. It is notable that none of the studies conducted to date examines the execution of a technical skill at the piano, such as a scale or arpeggio, in terms of the cooperative work done by all involved parts of the anatomy. Drawing upon established quantitative data, this study took a qualitative approach in describing and analyzing the execution of selected piano technical tasks. …

Soil Health And Sustainability: Managing The Biotic Component Of Soil Quality, John W. Doran, Michael R. Zeiss

Department of Agronomy and Horticulture: Faculty Publications

Soil health is the capacity of soil to function as a vital living system, within ecosystem and land-use boundaries, to sustain plant and animal productivity, maintain or enhance water and air quality, and promote plant and animal health. Anthropogenic reductions in soil health, and of individual components of soil quality, are a pressing ecological concern. A conference entitled ‘Soil Health: Managing the Biological Component of Soil Quality’ was held was held in the USA in November 1998 to help increase awareness of the importance and utility of soil organisms as indicators of soil quality and determinants of soil health. To …

Anticipating Adulthood: Expected Timing Of Work And Family Transitions Among Rural Youth, Lisa J. Crockett, C. Raymond Bingham

Department of Psychology: Faculty Publications

This study examined family and individual processes influencing the future expectancies of adolescents (N = 345) from an economically stressed rural community. The anticipated timing and sequencing of key role transitions (school completion, job entry, marriage, and parenthood) were examined for each gender. In addition, factors contributing to individual differences in expected timing were examined, and gender differences in predictors were tested. Results indicated that rural adolescents' expectancies about adult role transitions diverged somewhat from societal norms with respect to timing. Family background and relationships, adolescents' attitudes and behaviors, and educational aspirations all contributed to individual differences in expected …