Digital Commons Network^™

The Under-Ice Microbiome Of Seasonally Frozen Lakes, Stefan Bertilsson, Amy Burgin, Cayelan C. Carey, Samuel B. Fey, Hans-Peter Grossart, Lorena M. Grubisic, Ian D. Jones, Georgiy Kirillin, Jay T. Lennon, Ashley Shade, Robyn L. Smyth

School of Natural Resources: Faculty Publications

Compared to the well-studied open water of the ‘‘growing’’ season, under-ice conditions in lakes are characterized by low and rather constant temperature, slow water movements, limited light availability, and reduced exchange with the surrounding landscape. These conditions interact with ice-cover duration to shape microbial processes in temperate lakes and ultimately influence the phenology of community and ecosystem processes. We review the current knowledge on microorganisms in seasonally frozen lakes. Specifically, we highlight how under-ice conditions alter lake physics and the ways that this can affect the distribution and metabolism of auto- and heterotrophic microorganisms. We identify functional traits that we …

2013 Interior Least Tern And Piping Plover Monitoring, Research, Management, And Outreach Report For The Lower Platte River, Nebraska, Mary Bomberger Brown, Joel G. Jorgensen, Lauren R. Dinan

School of Natural Resources: Faculty Publications

This document reports on our monitoring, research, management, and outreach activities during the past 12 months (2012–2013). 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 lower Platte River and its major tributaries provide important nesting and migratory stopover habitat for two bird species of special conservation concern: the state and federally endangered Interior Least Tern (Sternula antillarum athalassos) and threatened Piping Plover (Charadrius melodus). The Tern and Plover Conservation Partnership (TPCP), based at the University of …

Nebraska Bqa: Herd Health Plan/Protocol, Rob Eirich

Nebraska Beef Quality Assurance Program

Nebraska cattlemen have demonstrated a commitment to the integrity of today's beef products by implementing sound cattle management practices. Consumers are looking for beef raised in a healthy and safe environment. An appropriate Herd Health Plan/Protocol ensures that all cattle are raised in the best health.

Tackling Change: Future-Proofing Water, Agriculture, And Food Security In An Era Of Climate Uncertainty, Peter G. Mccornick, Vladimir Smakhtin, Luna Bharati, Robyn Johnston, Matthew Mccartney, Fraser Sugden, Floriane Clement, Beverly Mcintyre

Daugherty Water for Food Global Institute: Faculty Publications

In 1950 the global population was just over 2.5 billion. Now, in 2013, it is around 7 billion. Although population growth is slowing, the world is projected to have around 9.6 billion inhabitants by 2050. Most of the population increase will be in developing countries where food is often scarce, and land and water are under pressure. To feed the global population in 2050 the world will have to produce more food without significantly expanding the area of cultivated land and, because of competition between a greater number of water users, with less freshwater. On top of land and water …

Center For Grassland Studies, Winter/Spring 2013, Volume 19, No. 1

Center for Grassland Studies: Newsletters

PGA Golf Management Honors and Other News

From the Director

Management of Crop Residues Is Key to Forage Supply Now and in the Future

Fire Research

Turfgrass Update

Many Good Speakers Lined Up for 2013 Nebraska Grazing Conference

Innovations on the Land Symposium

Nebraska Youth Range Camp in June

Nebraska Range Camp Turns 50 — Reunion in August

CGS Associates

Resources

Major Sponsored Programs And Faculty Awards For Research And Creative Activity: July 1, 2012 – June 30, 2013, Vicki Miller , Editor

Office of Research and Economic Development: Publications

This twelfth annual “Major Sponsored Programs and Faculty Awards for Research and Creative Activity” booklet highlights the successes of the University of Nebraska–Lincoln faculty during the fiscal year July 1, 2012-June 30, 2013. It lists the funding sources, projects and investigators on major grants and sponsored program awards received during the year; published books and scholarship; fellowships and other recognitions; intellectual property licenses; and performances and exhibitions in the fine and performing arts.

This impressive list grows each year and I am pleased to present evidence of our faculty’s accomplishments. Grants and contracts in a diverse range of fields—from education …

The Adjustment Of Asian American Families To The U.S. Context: The Ecology Of Strengths And Stress, Yan Ruth Xia, Kieu Anh Do, Xiaolin Xie

Department of Child, Youth, and Family Studies: Faculty Publications

The number of Asian American families is on the rise, making it 4.6% of the total US population. Asian American families are also a diverse group, comprising many different ancestries, cultural variations, and countries of origin. However, there remains a paucity of research focusing on Asian American Families. The media’s depiction of them as a Model Minority is doing a disservice to this population group. Because of this stereotype, many issues and challenges that this group encounters may not gain adequate attention. Some of these issues include acculturative stress, intimate partner violence, lack of a social support network, and intergenerational …

Draft Genome Sequence Of The Fast-Growing Marine Bacterium Vibrio Natriegens Strain Atcc 14048, Zheng Wang, Baochuan Lin, W. Judson Hervey Iv, Gary J. Vora

United States Navy: Publications

Vibrio natriegens bacteria are Gram-negative aquatic microorganisms that are found primarily in coastal seawater and sediments and are perhaps best known for their high growth rates (generation time of <10 min). In this study, we report the first sequenced genome of this species, that of the type strain Vibrio natriegens ATCC 14048, a salt marsh mud isolate from Sapelo Island, GA.

Nebraska: The Epicenter Of Global Beef Production, Monica Casey, Sydney Hansen, Levi Mcphillips, Jasmine Rogers, Stephanie Smolek

Strategic Discussions for Nebraska

NEBRASKA BEEF: nutritious, delicious, sustainable

Nebraska: Global Beef Industry Leader Ronnie Green

Creative Solutions Essential to the Future Larry Berger

Increased Demand for Nebraska Beef Will Require More Innovation Ronnie Green

Extension: “We’re Making a Difference in Nebraska” Chuck Hibberd

Let's Talk Beef

Flat Iron Steak

Tracking Beef

Nebraska Beef Council Supports Research, Education and Promotion Ann Marie Bosshamer

Efficiency Drives Beef Systems Research Rick Rasby

Technology Use Improves Efficiency, Sustainability Galen Erickson

50 Years of Beef Nutrition: “This is the Place Where it Comes Together” Terry Klopfenstein

Challenging Traditions: Changing Cow-Calf Production Rick Funston

Cattle Reproduction Takes Another Step …

Isolation And Characterization Of Clostridium Difficile Associated With Beef Cattle And Commercially Produced Ground Beef, Norasak Kalchayanand, Terrance M. Arthur, Joseph M. Bosilevac, Dayna M. Brichta-Harhay, Steven D. Shackelford, James E. Wells, Tommy L. Wheeler, Mohammad Koohmaraie

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

The incidence of Clostridium difficile infection has recently increased in North American and European countries. This pathogen has been isolated from retail pork, turkey, and beef products and reported associated with human illness. This increase in infections has been attributed to the emergence of a toxigenic strain designated North America pulsed-field gel electrophoresis type 1 (NAP1). The NAP1 strain has been isolated from calves as well as ground meat products, leading to speculation of illness from consumption of contaminated meat products. However, information on C. difficile associated with beef cattle during processing and commercially produced ground beef is limited. To …

Cross-Sectional Study Examining Salmonella Enterica Carriage In Subiliac Lymph Nodes Of Cull And Feedlot Cattle At Harvest, Sara E. Gragg, Guy H. Loneragan, Mindy M. Brashears, Terrance M. Arthur, Joseph M. Bosilevac, Norasak Kalchayanand, Rong Wang, John W. Schmidt, J. Chance Brooks, Steven D. Shackelford, Tommy L. Wheeler, Tyson R. Brown, Thomas S. Edrington, Dayna M. Brichta-Harhay

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

Bovine peripheral lymph nodes (LNs), including subiliac LNs, have been identified as a potential source of human exposure to Salmonella enterica, when adipose trim containing these nodes is incorporated into ground beef. In order to gain a better understanding of the burden of S. enterica in peripheral LNs of feedlot and cull cattle, a cross-sectional study was undertaken in which 3327 subiliac LNs were collected from cattle at harvest in seven plants, located in three geographically distinct regions of the United States. Samples were collected in three seasons: Fall 2010, Winter/Spring 2011, and Summer/Fall 2011. A convenience sample of …

A Simulation-Based Approach For Evaluating And Comparing The Environmental Footprints Of Beef Production Systems, C. A. Rotz, B. J. Isenberg, K. R. Stackhouse-Lawson, E. J. Pollak

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

A methodology was developed and used to determine environmental footprints of beef cattle produced at the U.S. Meat Animal Research Center (U.S. Meat Animal Research Center) in Clay Center, NE, with the goal of quantifying improvements achieved over the past 40 yr. Information for U.S. Meat Animal Research Center operations was gathered and used to establish parameters representing their production system with the Integrated Farm System Model. The U.S. Meat Animal Research Center farm, cow–calf, and feedlot operations were each simulated over recent historical weather to evaluate performance, environmental impact, and economics. The current farm operation included 841 ha of …

Endangered And Threatened Wildlife And Plants; Designation Of Critical Habitat For Gunnison Sage-Grouse; Proposed Rule, Patty Gelatt

United States Fish and Wildlife Service: Publications

We, the U.S. Fish and Wildlife Service, propose to designate critical habitat for the Gunnison sagegrouse (Centrocercus minimus) under the Endangered Species Act of 1973, as amended (Act). If we finalize this rule as proposed, it would extend the Act’s protections to this species’ critical habitat. The effect of this regulation is to designate critical habitat for the Gunnison sage-grouse under the Act. In total, approximately 689,675 hectares (ha) (1,704,227 acres (ac)) are being proposed for designation as critical habitat in Chaffee, Delta, Dolores, Gunnison, Hinsdale, Mesa, Montrose, Ouray, Saguache, and San Miguel Counties in Colorado, and in …

Review Of Captive-Reared Mallard Regulations On Shooting Preserves- Final Report

United States Fish and Wildlife Service: Publications

As numbers of wild ducks declined and hunting opportunities became more restricted in the mid- 1980s, interest in shooting captive-reared mallards on shooting preserves increased dramatically. In 1985, the U. S. Fish and Wildlife Service (Service) received a series of letters regarding the interpretation of regulations in 50 CFR 21.13 and the practice in Maryland of releasing captive-reared mallards in a freeflying condition on their State-licensed shooting preserves. Prior to this time, shooting preserves released flighted mallards from towers as a general practice to be shot immediately after release and maintained tighter control to prevent these birds from escaping to …

Endangered Status And Designation Of Critical Habitat For Gunnison Sage-Grouse: Literature Cited

United States Fish and Wildlife Service: Publications

Literature Cited A-Z

Aldridge, C.L. 1998. Status of the sage grouse (Centrocercus urophasianus urophasianus) in Alberta. Alberta Environmental Protection, Wildlife Management Division, and Alberta Conservation Association, Wildlife Status Report No. 13, Edmonton, AB. 23 pp.

Aldridge, C.L. and M.S. Boyce. 2007. Linking occurrence and fitness to persistence: a habitat-based approach for endangered greater sage-grouse. Ecological Applications 17:508-526.

Aldridge, C.L. and R.M. Brigham. 2003. Distribution, abundance, and status of the greater sage-grouse, Centrocercus urophasianus, in Canada. Canadian Field-Naturalist 117:25-34.

Aldridge, C.L., S.E. Nielsen, H.L. Beyer, M.S. Boyce, J.W. Connelly, S.T. Knick, and M.A. Schroeder. 2008. Range-wide patterns of …

Mobilization Of Lipids And Fortification Of Cell Wall And Cuticle Are Important In Host Defense Against Hessian Fly, Chitvan Khajuria, Haiyan Wang, Xuming Liu, Shanda Wheeler, John C. Reese, Mustapha El Bouhssini, R. Jeff Whitworth, Ming-Shun Chen

Department of Entomology: Faculty Publications

Background: Wheat – Hessian fly interaction follows a typical gene-for-gene model. Hessian fly larvae die in wheat plants carrying an effective resistance gene, or thrive in susceptible plants that carry no effective resistance gene.

Results: Gene sets affected by Hessian fly attack in resistant plants were found to be very different from those in susceptible plants. Differential expression of gene sets was associated with differential accumulation of intermediates in defense pathways. Our results indicated that resources were rapidly mobilized in resistant plants for defense, including extensive membrane remodeling and release of lipids, sugar catabolism, and amino acid transport …

Effect Of Citrus Byproducts On Survival Of O157:H7 And Non-O157 Escherichia Coli Serogroups Within In Vitro Bovine Ruminal Microbial Fermentations, Heather A. Duoss-Jennings, Ty B. Schmidt, Todd R. Callaway, Jeffery A. Carroll, James M. Martin, Sara A. Shields-Menard, Paul R. Broadway, Janet R. Donaldson

Department of Animal Science: Faculty Publications

Citrus byproducts (CBPs) are utilized as a low cost nutritional supplement to the diets of cattle and have been suggested to inhibit the growth of both Escherichia coli O157:H7 and Salmonella. The objective of this study was to examine the effects in vitro that varying concentrations of CBP in the powdered or pelleted variety have on the survival of Shiga-toxin Escherichia coli (STEC) serotypes O26:H11, O103:H8, O111:H8, O145:H28, and O157:H7 in bovine ruminal microorganism media. The O26:H11, O111:H8, O145:H28, and O157:H7 serotypes did not exhibit a change in populations in media supplemented with CBP with either variety. The O103:H8 …

Pots Plots And Plants: Annual Newsletter 2013

Department of Agronomy and Horticulture: Annual Newsletters

Table of Contents

Letters from the Head and Associate Head . . . . . . . . . . . 2–3

Meet the staff

Matt Sousek, Wendy Morrissey. . . . . . . . . . . . . . . . . . . . . . . 4

David Orr, Gene Hogan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Student news

Student Club updates. . . . . . . . . . …

Nebline, January 2013

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

Feature: 4-H School Enrichment Programs Bring Hands-On Learning to Local Classrooms

Farm Views

Urban Agriculture

Food & Fitness

Home & Family Living

Horticulture

Environmental Focus

4-H & Youth

Community Focus

Extension Calendar

Nutrition Education Program

Family and Community Education (FCE) Clubs

and other extension news and events

2012 Annual Report Special Pullout Section

Morphology, Gas Exchange, And Chlorophyll Content Of Longleaf Pine Seedlings In Response To Rooting Volume, Copper Root Pruning, And Nitrogen Supply In A Container Nursery, R. Kasten Dumroese, Shi-Jean Susana Sung, Jeremiah R. Pinto, Amy Ross-Davis, D. Andrew Scott

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

Few pine species develop a seedling grass stage; this growth phase, characterized by strong, carrot-like taproots and a stem-less nature, poses unique challenges during nursery production. Fertilization levels beyond optimum could result in excessive diameter growth that reduces seedling quality as measured by the root bound index (RBI). We grew longleaf pine (Pinus palustris), a grass stage species, in containers of four different volumes (60–336 ml) either coated with copper oxychloride or left untreated and fertilized at low, medium, or high levels of nitrogen (N). In general, N concentration of tissues rose as N rate increased, with larger …

Mutational Analyses Of A Fork Head Associated Domain Protein, Dawdle, In Arabidopsis Thaliana, Lakshmi Ayiloor Narayanan, Dipaloke Mukherjee, Shuxin Zhang, Bin Yu, David Chevalier

Center for Plant Science Innovation: Faculty Publications

DAWDLE (DDL) gene encodes a protein that contains an N-terminal arginine-rich domain and a C-terminal Fork Head Associated (FHA) domain in Arabidopsis thaliana. DDL protein is believed to function in microRNA biogenesis by mediating the recruitment of pri-microRNA to DICER-LIKE 1 and also stabilizing the microRNA. The aim of this study was to conduct a structure-function analysis to identify the regions in DDL that are of functional significance. Targeted Induced Local Lesions in Genome screen was performed in the Columbia erecta-105 background of Arabidopsis resulting in the identification of eight point mutations spanning DDL. The mutants were characterized by …

Consequences Of Climate Change For The Soil Climate In Central Europe And The Central Plains Of The United States, Miroslav Trnka, Kurt Christian Kersebaum, Josef Eitzinger, Michael Hayes, Petr Hlavinka, Mark Svoboda, Martin Dubrovský, Daniela Semerádová, Brian D. Wardlow, Eduard Pokorný, Martin Možný, Donald A. Wilhite, Zdeněk Žalud

National Drought Mitigation Center: Faculty Publications

This study aims to evaluate soil climate quantitatively under present and projected climatic conditions across Central Europe (12.1°–18.9° E and 46.8°–51.1° N) and the U.S. Central Plains (90°–104° W and 37°–49° N), with a special focus on soil temperature, hydric regime, drought risk and potential productivity (assessed as a period suitable for crop growth). The analysis was completed for the baselines (1961–1990 for Europe and 1985–2005 for the U.S.) and time horizons of 2025, 2050 and 2100 based on the outputs of three global circulation models using two levels of climate sensitivity. The results indicate that the soil climate (soil …

Childcare And Youth Training And Technical Assistance Project (Cyttap) January 2013 Evaluation Report, Kit Alviz, Tonia Durden

Nebraska Center for Research on Children, Youth, Families, and Schools: Faculty Publications

From November 2011 through December 2012, 181 face-to-face trainings and 25 train-the-trainer events were offered to individuals as part of the Childcare and Youth training and Technical Assistance Project (CYTTAP) across 13 states. The trainings include Better Kid Care (face-to-face sessions that cover a wide range of topics from arts and math to challenging behaviors and physical activity); I Am Moving, I Am Learning (about preventing childhood obesity); and Rock Solid Foundations (on supporting young children's social and emotional growth and development). Positive ratings and significant change were the results across all projects.

Dakota, Norman K. Risjord

University of Nebraska Press: Sample Books and Chapters

The northern plains are often ignored by the rest of the nation or, if not, are mentioned in the context of the weather, Mount Rushmore, or the Black Hills. However, North Dakota and South Dakota have a colorful past—and present—deserving of greater recognition. Norman K. Risjord relates the remarkable histories of these two states, from the geological formation of the Great Plains to economic changes in the twenty-first century. Risjord takes the reader on a journey through the centuries detailing the first human inhabitants of the northern plains, the Lewis and Clark expedition, homesteading and railroad building, the political influence …

Unopa 50th Anniversary Booklet

UNOPA: Special Events

No abstract provided.

G13-425 2013 Nebraska Beef Report Summaries, Richard J. Rasby, Karla Jenkins, Galen Erickson

University of Nebraska-Lincoln Extension: Historical Materials

Brief synopsis of recent UNL beef research. Each year the UNL Department of Animal Science reports its current beef cattle research. This 2013 NebGuide discusses the research topics of Cow/Calf, Growing, Finishing and Beef Products.

Splicing Variants Of The Porcine Betaine–Homocysteine S-Methyltransferase Gene: Implications For Mammalian Metabolism, Radhika Ganu, Timothy Garrow, Markos Koutmos, Laurie Rund, Lawrence B. Schook

Uniformed Services University of the Health Sciences

Betaine–homocysteine S-methyltransferase (BHMT) activity is only detected in the liver of rodents, but in both the liver and kidney cortex of humans and pigs; therefore, the pig was chosen as a model to define the spatial and temporal expression of BHMT during development. During fetal development, a total of ten splice variants of bhmt were expressed at varying levels across a wide range of porcine tissues. Two variants contained an identical ORF that encoded a C-terminal truncated form of BHMT (tBHMT). The bhmt transcripts were expressed at significant levels in the liver and kidney from day 45 of gestation …

Pre-Meal Affective State And Laboratory Test Meal Intake In Adolescent Girls With Loss Of Control Eating, Lisa Ranzenhofer, Louise Hannallah, Sara E. Field, Lauren Shomaker, Mark Stephens, Tracy Sbrocco, Merel Kozlosky, James Reynolds, Jack A. Yanovski, Marian Tanofsky-Kraff

Uniformed Services University of the Health Sciences

Loss of control eating confers risk for excess weight gain and exacerbated disordered eating. Affect theory proposes that loss of control eating is used to cope with negative mood states. Self-report data suggest that negative affect may contribute to the etiology of loss of control eating, but this theory has not been well-tested using laboratory paradigms. We examined associations between pre-meal affective states and intake during a laboratory test meal. One-hundred and ten adolescent girls with reported loss of control eating whose body mass index fell between the 75th and 97th percentile for age and sex completed state mood ratings …

Conservation And Ecology Of Marine Forage Fishes— Proceedings Of A Research Symposium, September 2012, Theresa Liedtke, Caroline Gibson, Dayv Lowry, Duane Fagergren

United States Geological Survey: Publications

Locally and globally, there is growing recognition of the critical roles that herring, smelt, sand lance, eulachon, and other forage fishes play in marine ecosystems. Scientific and resource management entities throughout the Salish Sea, agree that extensive information gaps exist, both in basic biological knowledge and parameters critical to fishery management. Communication and collaboration among researchers also is inadequate.

Building on the interest and enthusiasm generated by recent forage fish workshops and symposia around the region, the 2012 Research Symposium on the Conservation and Ecology of Marine Forage Fishes was designed to elucidate practical recommendations for science and policy needs …

A Prospective Study Of Physical Fitness, Obesity, And The Subsequent Risk Of Mental Disorders Among Healthy Young Adults In Army Training, Marlene E. Gubata, Nadia Urban, David N. Cowan, David W. Niebuhr

United States Army: Publications

Objective: Mental health disorders contribute substantially to medical and occupational morbidity. The role of fitness and physical activity in the prevention of mental health disorders is not well established, but epidemiologic data suggest that physical activity can protect against anxiety and depression.

Method: The analyses presented in this report, from a prospective cohort study, evaluate the association between fitness (as measured by a 5-minute step test), and being overweight (defined as exceeding weight and body fat allowances) at military entrance, with subsequent onset of mental disorder diagnosis in the first year of service. The association between risk factors …