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Rodenticide Incidents Of Exposure And Adverse Effects On Non-Raptor Birds, Nimish B. Vyas Jul 2017

Rodenticide Incidents Of Exposure And Adverse Effects On Non-Raptor Birds, Nimish B. Vyas

United States Geological Survey: Staff Publications

Interest in the adverse effects of rodenticides on birds has focused primarily on raptors. However, non-raptor birds are also poisoned (rodenticide exposure resulting in adverse effects including mortality) by rodenticides through consumption of the rodenticide bait and contaminated prey. A literature search for rodenticide incidents (evidence of exposure to a rodenticide, adverse effects, or exposure to placebo baits) involving non-raptor birds returned 641 records spanning the years 1931 to 2016. The incidents included 17 orders, 58 families, and 190 non-raptor bird species. Nineteen anticoagulant and non-anticoagulant rodenticide active ingredients were associated with the incidents. The number of incidents and species …


Dietary Red And Processed Meat Intake And Markers Of Adiposity And Inflammation: The Multiethnic Cohort Study, Weiwen Chai, Yukiko Morimoto, Robert V. Cooney, Adrian A. Franke, Yurii B. Shvetsov, Loïc Le Marchand, Christopher A. Haiman, Laurence N. Kolonel, Marc T. Goodman, Gertraud Maskarinec Jul 2017

Dietary Red And Processed Meat Intake And Markers Of Adiposity And Inflammation: The Multiethnic Cohort Study, Weiwen Chai, Yukiko Morimoto, Robert V. Cooney, Adrian A. Franke, Yurii B. Shvetsov, Loïc Le Marchand, Christopher A. Haiman, Laurence N. Kolonel, Marc T. Goodman, Gertraud Maskarinec

Department of Nutrition and Health Sciences: Faculty Publications

Objective—The potential influence of dietary factors on inflammation is important for cancer prevention. Utilizing data from control participants (312 men, 911 women) in two nested case-control studies of cancer within the Multiethnic Cohort, we examined the associations of red and processed meat intake with serum levels of leptin, adiponectin, C-reactive protein (CRP), tumor necrosis factor (TNF)-α, and interleukin (IL)-6 and the mediator effect of body mass index (BMI) on the above associations (if present).

Methods—Multivariable linear models were applied to assess the association between red and processed meat intake at cohort entry and serum biomarker levels measured 9.1 …


Descriptions Of Six New Species Of False Click Beetles (Coleoptera: Eucnemidae: Macraulacinae), With New Identification Keys For One Tribe And Two Genera, Robert L. Otto Jun 2017

Descriptions Of Six New Species Of False Click Beetles (Coleoptera: Eucnemidae: Macraulacinae), With New Identification Keys For One Tribe And Two Genera, Robert L. Otto

Insecta Mundi

Six new species of false click beetle (Coleoptera: Eucnemidae) are described. These new species are: Fornax dixiensis sp. nov. (Florida, USA), Dromaeolus comayaguiensis sp. nov. (Honduras), Asiocnemis bicolor sp. nov. (Ecuador), Miruantennus chinensis sp. nov. (Yunnan prov., China), Miruantennus cuneiformis sp. nov. (Malaysia) and Nematodes africanus sp. nov. (Côte d’Ivoire). Identifi cation keys are provided for species of Fornax in the Nearctic ecozone and Miruantennus in the Palearctic and Indo-Malayan ecozones. A new key to include all the genera within the tribe Nematodini Leiler is also provided.


A New State Record For Ohanlonella Rifkind In Mexico With A Note On Color Variation (Coleoptera: Cleridae: Clerinae), Jacques Rifkind Jun 2017

A New State Record For Ohanlonella Rifkind In Mexico With A Note On Color Variation (Coleoptera: Cleridae: Clerinae), Jacques Rifkind

Insecta Mundi

The monotypic clerid genus Ohanlonella Rifkind (Coleoptera: Cleridae: Clerinae), described from Oaxaca, is reported for the fi rst time from the state of Veracruz. The recently discovered population shows distinctly different coloration from the type series of O. esperanzae Rifkind, but appears to be otherwise identical. The Veracruz morph is briefly characterized and illustrated, and its significance is discussed.

El género monotípico de cléridos Ohanlonella Rifkind (Coleoptera: Cleridae: Clerinae), descrito de Oaxaca, es reportado por primera vez para el estado de Veracruz. La población recientemente descubierta muestra una coloración claramente distinta de la serie típica de O. esperanzae Rifkind, pero …


Introducción A Los Phycitinae De Chile (Lepidoptera: Pyralidae), Nuevo Registro Y Descripción De Una Nueva Especie Del Género Homoeographa Ragonot, 1888, Danilo E. Cepeda Jun 2017

Introducción A Los Phycitinae De Chile (Lepidoptera: Pyralidae), Nuevo Registro Y Descripción De Una Nueva Especie Del Género Homoeographa Ragonot, 1888, Danilo E. Cepeda

Insecta Mundi

Se presenta una sinopsis de los Phycitinae (Lepidoptera: Pyralidae) de Chile, incluyendo listado sistemático con su distribución geográfi ca. Se registra la presencia de Inverina suizensis Neunzig y Goodson, 1992, por primera vez en Chile y se describe una nueva especie del género Homoeographa Ragonot, 1888.

A synopsis of the Phycitinae (Lepidoptera: Pyralidae) of Chile is presented. It includes a systematic list with distribution data. Inverina suizensis Neunzig and Goodson, 1992, is recorded from Chile for the fi rst time, and a new species of the genus Homoeographa Ragonot, 1888, is described.


First Record Of Agrilus Osburni Knull (Coleoptera: Buprestidae) In Two Northeastern States In North America, Lawrence Barringer Jun 2017

First Record Of Agrilus Osburni Knull (Coleoptera: Buprestidae) In Two Northeastern States In North America, Lawrence Barringer

Insecta Mundi

Agrilus osburni Knull (Coleoptera: Buprestidae) is reported from Massachusetts and Pennsylvania for the first time, new state records. Nine male specimens were collected in Lindgren funnels from 2010 to 2016. These new records expand the known range of this species in northeastern North America.


New Species Of Ctilodes Murray (Coleoptera: Nitidulidae) From Southeast Asia, With A Key To Members Of The Genus, Gareth S. Powell, Alexandra G. Duffy Jun 2017

New Species Of Ctilodes Murray (Coleoptera: Nitidulidae) From Southeast Asia, With A Key To Members Of The Genus, Gareth S. Powell, Alexandra G. Duffy

Insecta Mundi

A new species of Ctilodes Murray, 1864 (Coleoptera: Nitidulidae) was recovered in material from Vietnam during a large study of Carpophilinae. A description and detailed diagnosis of Ctilodes clinei Powell and Duffy new species is presented here along with a key to identify all currently known species of Ctilodes.


Some Corrections And Remarks Regarding The Nomenclature Of Neotropical Athyreini, Passalini, Phanaeini, Rutelini, Cyclocephalini, Dynastini And Oryctini (Coleoptera: Scarabaeoidea), Auke J. Hielkema Jun 2017

Some Corrections And Remarks Regarding The Nomenclature Of Neotropical Athyreini, Passalini, Phanaeini, Rutelini, Cyclocephalini, Dynastini And Oryctini (Coleoptera: Scarabaeoidea), Auke J. Hielkema

Insecta Mundi

A number of nomenclatural issues regarding Neotropical Scarabaeoidea are addressed. Athyreus soesilae Makhan, 2008 is synonymized with Neoathyreus (Neoathyreus) excavatus (Laporte, 1840) (Geotrupidae: Bolboceratinae: Athyreini). Scalmus Zang, 1905 is replaced with its senior synonym Neleuops Kuwert, 1891, nec Neleurops Kuwert, 1891, and the four species it presently contains are thus transferred to Neleuops (Passalidae: Passalinae: Passalini). The spelling of the name Oxysternon oberthueri Olsoufieff, 1924, a junior synonym of Oxysternon (Oxysternon) conspicillatum (Weber, 1801), is fixed (Scarabaeidae: Scarabaeinae: Phanaeini). The year of description of Oxysternon (Oxysternon) festivum (Linnaeus, 1758) is corrected, its existing lectotype invalidated, and a new lectotype designated …


The Mantispidae Of The West Indies With Special Reference To The Dominican Republic (Neuroptera: Mantispidae), Kevin M. Hoffman, Oliver S. Flint Jr, Daniel E. Perez-Gelabert Jun 2017

The Mantispidae Of The West Indies With Special Reference To The Dominican Republic (Neuroptera: Mantispidae), Kevin M. Hoffman, Oliver S. Flint Jr, Daniel E. Perez-Gelabert

Insecta Mundi

The Antillean fauna of Mantispidae (Neuroptera) consists of six species in four genera, all in the subfamily Mantispinae. Two new species are here described: Leptomantispa antillesensis Hoffman, n. sp., is described from Puerto Rico, Anguilla, British Virgin Islands (Grand Camanoe, Guana, Tortola), United States Virgin Islands (St. Croix, St. John, St. Thomas), Dominica, and Guadeloupe, and Leptomantispa hispaniolaensis Hoffman, n. sp. is described from Hispaniola (Dominican Republic). Mantispilla zayasi Alayo is synonymized under Leptomantispa pulchella (Banks), new synonomy, and Mantispilla taina Alayo is synonymized under Zeugomantispa minuta (Fabricius), new synonomy. Climaciella cubana Enderlein is recorded for the first time from …


First Record Of Conognatha Iris Iris Olivier (Coleoptera: Buprestidae) For Venezuela, Cristian Pineda, Carlos Taboada-Verona Jun 2017

First Record Of Conognatha Iris Iris Olivier (Coleoptera: Buprestidae) For Venezuela, Cristian Pineda, Carlos Taboada-Verona

Insecta Mundi

Conognatha iris iris Olivier (Coleoptera: Buprestidae) is recorded for the fi rst time for Venezuela. The record is based on a single female specimen from Caicet hill, Amazonas state. A map of the known distribution of the taxon is provided.

Se registra por primera vez la presencia de Conognatha iris iris Olivier (Coleoptera: Buprestidae) para Venezuela. El registro se basa en un ejemplar hembra proveniente de cerro Caicet, Estado Amazonas. Se presenta un mapa de la distribución conocida para el taxón.


Fish And Macroinvertebrate Response To Restored Off Channel Habitats On The Lower Platte River, Nebraska, Caleb Uerling Jun 2017

Fish And Macroinvertebrate Response To Restored Off Channel Habitats On The Lower Platte River, Nebraska, Caleb Uerling

School of Natural Resources: Dissertations, Theses, and Student Research

Anthropogenic alterations to large rivers ranging from impoundments to levees have caused many rivers to no longer access the floodplain. The ecological integrity of floodplain rivers depends on the interaction between main-channel and floodplain habitats. Fish communities inhabiting floodplain habitats are often dictated by the type of habitat and conditions within that habitat. As restoration projects are undertaken it is imperative that managers understand how fish and macroinvertebrates respond to these events. We collected fish, macroinvertebrates, and habitat parameters on two restored floodplain habitats on the lower Platte River, Nebraska to answer questions about aquatic community response to floodplain restoration …


Honey Bee Gut Dysbiosis: A Novel Context Of Disease Ecology, Kirk E. Anderson, Vincent A. Ricigliano Jun 2017

Honey Bee Gut Dysbiosis: A Novel Context Of Disease Ecology, Kirk E. Anderson, Vincent A. Ricigliano

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

The honey bee microbiota has become a hot-spot of recent research. Highly co-evolved with its host, the hindgut microbiota of a worker honey bee consists of six bacterial species shown to occur reliably in particular proportions. Altered microbiota structure is associated with host deficiencies, and a variety of bacteria found throughout the hive environment can dominate the worker gut suppressing or displacing microbiota function. The synthesis presented here suggests environmental insults alter gut bacterial balance, leading to decreased host function and disease progression. Specific functional groups of native bacteria represent a model system to investigate dysbiosis and the evolution of …


Effect Of Feeding Three Lysine To Energy Diets On Growth, Body Composition And Age At Puberty In Replacement Gilts, J.A. Calderón Díaz, J. L. Vallet, R.D. Boyd, Clay A. Lents, T.J. Prince, A.E. Dedecker, C.E. Phillips, G. Foxcroft, Kenneth J. Stalder Jun 2017

Effect Of Feeding Three Lysine To Energy Diets On Growth, Body Composition And Age At Puberty In Replacement Gilts, J.A. Calderón Díaz, J. L. Vallet, R.D. Boyd, Clay A. Lents, T.J. Prince, A.E. Dedecker, C.E. Phillips, G. Foxcroft, Kenneth J. Stalder

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

This study evaluated the effect of diets differing in standard ileal digestible (SID) lysine on lysine intake, growth rate, body composition and age at puberty on maternal line gilts. Crossbred Large White×Landrace gilts (n =641) were fed corn-soybean diets differing in SID lysine concentration (%, g SID lysine:Mcal ME); diets were not isocaloric. Gilts received three grower, finisher diet combinations: low (0.68% lysine grower, 0.52% lysine finisher), medium (0.79% lysine grower, 0.60% lysine finisher) or high (0.90% lysine grower, 0.68% lysine finisher). Grower diets were fed from 100 until 142 days of age, and finisher diets were fed until they …


A Strategy To Optimize Recovery In Orthopedic Sports Injuries, Michael P. Sealy, Ziye Liu, Chao Li, Yuebin Guo, Ben White, Mark Barkey, Brian Jordon J, Luke N. Brewer, Dale Feldman Jun 2017

A Strategy To Optimize Recovery In Orthopedic Sports Injuries, Michael P. Sealy, Ziye Liu, Chao Li, Yuebin Guo, Ben White, Mark Barkey, Brian Jordon J, Luke N. Brewer, Dale Feldman

Department of Mechanical and Materials Engineering: Faculty Publications

An important goal for treatment of sports injuries is to have as short a recovery time as possible. The critical problem with current orthopedic implants is that they are designed to be permanent and have a high complication rate (15%) that often requires removal and replacement with a second surgery; and subsequently a second rehabilitation cycle. This study was designed to test the feasibility of having a device that could provide the needed mechanical properties, while promoting healing, for a specified amount of time and then degrade away, to shorten the recovery time. The specific strategy was to create a …


Cross-Resistance And Synergism Bioassays Suggest Multiple Mechanisms Of Pyrethroid Resistance In Western Corn Rootworm Populations, Adriano E. Pereira, Dariane Souza, Sarah N. Zukoff, Lance J. Meinke, Blair D. Siegfried Jun 2017

Cross-Resistance And Synergism Bioassays Suggest Multiple Mechanisms Of Pyrethroid Resistance In Western Corn Rootworm Populations, Adriano E. Pereira, Dariane Souza, Sarah N. Zukoff, Lance J. Meinke, Blair D. Siegfried

Department of Entomology: Faculty Publications

Recently, resistance to the pyrethroid bifenthrin was detected and confirmed in field populations of western corn rootworm, Diabrotica virgifera virgifera LeConte from southwestern areas of Nebraska and Kansas. As a first step to understand potential mechanisms of resistance, the objectives of this study were i) to assess adult mortality at diagnostic concentration- LC99 to the pyrethroids bifenthrin and tefluthrin as well as DDT, ii) estimate adult and larval susceptibility to the same compounds as well as the organophosphate methyl-parathion, and iii) perform synergism experiments with piperonyl butoxide (PBO) (P450 inhibitor) and S,S,S-tributyl-phosphorotrithioate (DEF) (esterase inhibitor) in field populations. Most of …


Nanomaterials As Stationary Phases And Supports In Liquid Chromatography: A Review, Sandya Beeram, Elliott Rodriguez, Suresh Doddavenkatanna, Zhao Li, Allegra Pekarek, Darin Peev, Kathryn Goerl, Gianfranco Trovato, Tino Hofmann, David S. Hage Jun 2017

Nanomaterials As Stationary Phases And Supports In Liquid Chromatography: A Review, Sandya Beeram, Elliott Rodriguez, Suresh Doddavenkatanna, Zhao Li, Allegra Pekarek, Darin Peev, Kathryn Goerl, Gianfranco Trovato, Tino Hofmann, David S. Hage

David Hage Publications

The development of various nanomaterials over the last few decades has led to many applications for these materials in liquid chromatography (LC). This review will look at the types of nanomaterials that have been incorporated into LC systems and the applications that have been explored for such systems. A number of carbon-based nanomaterials and inorganic nanomaterials have been considered for use in LC, ranging from carbon nanotubes, fullerenes and nanodiamonds to metal nanoparticles and nanostructures based on silica, alumina, zirconia and titanium dioxide. Many ways have been described for incorporating these nanomaterials into LC systems. These methods have included covalent …


The Seeds Of Change: Attitudinal Stability And The Direction Of Attitudinal Change Across The Lifespan, Johnathan C. Peterson Jun 2017

The Seeds Of Change: Attitudinal Stability And The Direction Of Attitudinal Change Across The Lifespan, Johnathan C. Peterson

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

Folk wisdom has long held that people become more conservative as they grow older. The empirics behind this claim, however, are not definitive. Utilizing panel data from the Michigan Youth-Parent Socialization Panel study and a longitudinal sample of Australian twins, my dissertation answers this question and many others as I examine patterns of attitudinal stability and the direction of attitudinal change when it does occur. These data allowed me to longitudinally track attitudinal change at the individual level. I first uncovered latent classes defined by patterns of attitudinal stability across the lifespan. The majority of people in these latent classes …


Coffee Quality, Land Use, And Processing In The Cajamarca Region Of Peru, Jonathan E. Ferguson Jun 2017

Coffee Quality, Land Use, And Processing In The Cajamarca Region Of Peru, Jonathan E. Ferguson

Department of Anthropology: Theses and Student Research

Procedures used for defining coffee quality include a variety of activities ranging from physical measurements, hedonic sensory evaluations, and valuation of recognized extrinsic attributes. The physical measurements of coffee quality evaluate intrinsic attributes through a set of formal coffee grading and analysis standards, in addition to human sensory activities which conduct formal cupping protocol standards and formal tasting competitions. Extrinsic qualities include attributes such as branding and aesthetics, in addition to sets of ethical qualities established to further differentiate value beyond intrinsic and hedonic qualities. The promotion and standardization of coffee quality expectations directly impact activities taken by coffee producers. …


Three-Dimensional Nanomagnetism, Amalio Fernández-Pacheco, Robert Streubel, Olivier Fruchart, Riccardo Hertel, Peter Fischer, Russell P. Cowburn Jun 2017

Three-Dimensional Nanomagnetism, Amalio Fernández-Pacheco, Robert Streubel, Olivier Fruchart, Riccardo Hertel, Peter Fischer, Russell P. Cowburn

Department of Physics and Astronomy: Faculty Publications

Magnetic nanostructures are being developed for use in many aspects of our daily life, spanning areas such as data storage, sensing and biomedicine. Whereas patterned nanomagnets are traditionally two-dimensional planar structures, recent work is expanding nanomagnetism into three dimensions; a move triggered by the advance of unconventional synthesis methods and the discovery of new magnetic effects. In three-dimensional nanomagnets more complex magnetic configurations become possible, many with unprecedented properties. Here we review the creation of these structures and their implications for the emergence of new physics, the development of instrumentation and computational methods, and exploitation in numerous applications.


Long-Read Sequencing Improves Assembly Of Trichinella Genomes 10-Fold, Revealing Substantial Synteny Between Lineages Diverged Over 7 Million Years, Peter C. Thompson, Dante S. Zarlenga, Ming-Yuan Liu, Benjamin M. Rosenthal Jun 2017

Long-Read Sequencing Improves Assembly Of Trichinella Genomes 10-Fold, Revealing Substantial Synteny Between Lineages Diverged Over 7 Million Years, Peter C. Thompson, Dante S. Zarlenga, Ming-Yuan Liu, Benjamin M. Rosenthal

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

Genome assemblies can form the basis of comparative analyses fostering insight into the evolutionary genetics of a para- site’s pathogenicity, host–pathogen interactions, environmental constraints and invasion biology; however, the length and complexity of many parasite genomes has hampered the development of well-resolved assemblies. In order to improve Trichinella genome assemblies, the genome of the sylvatic encapsulated species Trichinella murrelli was sequenced using third-generation, long-read technology and, using syntenic comparisons, scaffolded to a reference genome assembly of Trichinella spiralis, markedly improving both. A high-quality draft assembly for T. murrelli was achieved that totalled 63·2 Mbp, half of which was condensed into …


Rumen Fluid Metabolomics Analysis Associated With Feed Efficiency On Crossbred Steers, Virginia M. Artegoitia, Andrew P. Cassady, Ronald M. Lewis, Harvey C. Freetly Jun 2017

Rumen Fluid Metabolomics Analysis Associated With Feed Efficiency On Crossbred Steers, Virginia M. Artegoitia, Andrew P. Cassady, Ronald M. Lewis, Harvey C. Freetly

Department of Animal Science: Faculty Publications

The rumen has a central role in the efficiency of digestion in ruminants. To identify potential differences in rumen function that lead to differences in average daily gain (ADG), rumen fluid metabolomic analysis by LC-MS and multivariate/univariate statistical analysis were used to identify differences in rumen metabolites. Individual feed intake and body-weight was measured on 144 steers during 105 d on a high concentrate ration. Eight steers with the greatest ADG and 8 steers with the least-ADG with dry matter intake near the population average were selected. Blood and rumen fluid was collected from the 16 steers 26 d before …


Protocol For Enrichment Of The Membrane Proteome Of Mature Tomato Pollen, Puneet Paul, Palak Chaturvedi, Anida Mesihovic, Arindam Ghatak, Wolfram Weckwerth, Enrico Schleiff Jun 2017

Protocol For Enrichment Of The Membrane Proteome Of Mature Tomato Pollen, Puneet Paul, Palak Chaturvedi, Anida Mesihovic, Arindam Ghatak, Wolfram Weckwerth, Enrico Schleiff

Department of Agronomy and Horticulture: Faculty Publications

We established and elaborated on a method to enrich the membrane proteome of mature pollen from economically relevant crop using the example of Solanum lycopersicum (tomato). To isolate the pollen protein fraction enriched in membrane proteins, a high salt concentration (750 mM of sodium chloride) was used. The membrane protein-enriched fraction was then subjected to shotgun proteomics for identification of proteins, followed by in silico analysis to annotate and classify the detected proteins.


Integrating Future Scenario-Based Crop Expansion And Crop Conditions To Map Switchgrass Biofuel Potential In Eastern Nebraska, Usa, Yingxin Gu, Bruce K. Wylie Jun 2017

Integrating Future Scenario-Based Crop Expansion And Crop Conditions To Map Switchgrass Biofuel Potential In Eastern Nebraska, Usa, Yingxin Gu, Bruce K. Wylie

United States Geological Survey: Staff Publications

Switchgrass (Panicum virgatum) has been evaluated as one potential source for cellulosic biofuel feedstocks. Planting switchgrass in marginal croplands and waterway buffers can reduce soil erosion, improve water quality, and improve regional ecosystem services (i.e. it serves as a potential carbon sink). In previous studies, we mapped high risk marginal croplands and highly erodible cropland buffers that are potentially suitable for switchgrass development, which would improve ecosystem services and minimally impact food production. In this study, we advance our previous study results and integrate future crop expansion information to develop a switchgrass biofuel potential ensemble map for current and future …


The R Journal (June 2017) 9(1): Complete Issue, The R Foundation Jun 2017

The R Journal (June 2017) 9(1): Complete Issue, The R Foundation

The R Journal

Editorial, Roger Bivand

Contributed Research Articles

iotools: High-Performance I/O Tools for R, Taylor Arnold, Michael J. Kane, and Simon Urbanek

IsoGeneGUI: Multiple Approaches for Dose-Response Analysis of Microarray Data Using R, Martin Otava, Rudradev Sengupta, Ziv Shkedy, Dan Lin, Setia Pramana, Tobias Verbeke, Philippe Haldermans, Ludwig A. Hothorn, Daniel Gerhard, Rebecca M. Kuiper, Florian Klinglmueller, and Adetayo Kasim

Network Visualization with ggplot2, Sam Tyner, François Briatte, and Heike Hofmann

OrthoPanels: An R Package for Estimating a Dynamic Panel Model with Fixed Effects Using the Orthogonal Reparameterization Approach, Mark Pickup, Paul Gustafson, Davor Cubranic, and Geoffrey Evans

The mosaic Package: Helping …


Bylaws Of The University Of Nebraska-Lincoln As Of June 1, 2017, Board Of Regents, University Of Nebraska Jun 2017

Bylaws Of The University Of Nebraska-Lincoln As Of June 1, 2017, Board Of Regents, University Of Nebraska

University of Nebraska-Lincoln Administration: Reports, Papers, Publications, and Presentations

Preamble

The University of Nebraska-Lincoln, chartered by the Nebraska Legislature in 1869, is part of the University of Nebraska system which serves as both the land-grant and the comprehensive public University for the State of Nebraska. The role of the University of Nebraska-Lincoln as the primary intellectual and cultural resource for the State is fulfilled through the three missions of the University: teaching, research, and service.

Nebraska Revised Statutes Chapter 85 establishes the University of Nebraska-Lincoln. It defines the object of the University of Nebraska-Lincoln as affording students, and the residents of the Nebraska, the means of acquiring a thorough …


Impact Of Macropores And Gravel Outcrops On Phosphorus Leaching At The Plot Scale In Silt Loam Soils, Derek M. Heeren, Garey A. Fox, Chad Penn, Todd Halihan, Daniel E. Storm, Brian Haggard Jun 2017

Impact Of Macropores And Gravel Outcrops On Phosphorus Leaching At The Plot Scale In Silt Loam Soils, Derek M. Heeren, Garey A. Fox, Chad Penn, Todd Halihan, Daniel E. Storm, Brian Haggard

Department of Agricultural and Biological Systems Engineering: Faculty Publications

In response to increased nutrient loads in surface waters, scientists and engineers need to identify critical nutrient source areas and transport mechanisms within a catchment to protect beneficial uses of aquatic systems in a cost-effective manner. It was hypothesized that hydrologic heterogeneities (e.g., macropores and gravel outcrops) in the vadose zone play an integral role in affecting flow and solute transport between the soil surface and shallow alluvial aquifers. The objective of this research was to characterize phosphorus (P) leaching through silt loam soils to alluvial gravel aquifers in the floodplains of the Ozark ecoregion at the plot scale. Solute …


Greater Sandhill Crane (Antigone Canadensis Tabida) Copulation Detected Along The Big Bend Of The Platte River, South-Central Nebraska, Andrew J. Caven, Emma M. Brinley Buckley Jun 2017

Greater Sandhill Crane (Antigone Canadensis Tabida) Copulation Detected Along The Big Bend Of The Platte River, South-Central Nebraska, Andrew J. Caven, Emma M. Brinley Buckley

Nebraska Bird Review

On 9 March 2017 at 0805 hrs, two A. canadensis tabida were observed copulating on a sandy island within the south channel of the Platte River, Hall County, Nebraska (40.790982°N, -98.404635°W, WGS84; 581 m elev.). Two biologists witnessed the copulation at a distance of about 175 m looking to the south from within an overnight viewing blind on the north bank of the south channel of the Platte River, utilizing an 80 mm spotting scope (20x60x magnification). The sequence of events previous to the copulation followed very closely the observations reported by Tacha (1988). The copulation was proceeded by the …


Pheasant Response To Lead Ingestion, Travis J. Runia, Alex J. Solem Jun 2017

Pheasant Response To Lead Ingestion, Travis J. Runia, Alex J. Solem

The Prairie Naturalist

Lead is toxic to all vertebrate species and ingestion of spent lead pellets from hunting is the primary method of exposure in birds. Both acute and chronic effects occur in response to lead ingestion including death, weight loss, and reduced body function, but the effect is highly variable among species. Most research has focused on lead ingestion impacts on waterfowl, but less is known about the effects of lead ingestion by upland game such as ring-necked pheasants (Phasianus colchicus). We gavage- fed zero, one, or three lead pellets to 90 (n = 30/group) captive-raised adult hen pheasants and monitored survival …


Long-Term Changes In Canada Goose Nest Success And Nest Densities At An Iowa Wetland Complex, Brenna N. Ness, Robert W. Klaver, Guy G. Zenner Jun 2017

Long-Term Changes In Canada Goose Nest Success And Nest Densities At An Iowa Wetland Complex, Brenna N. Ness, Robert W. Klaver, Guy G. Zenner

The Prairie Naturalist

Giant Canada geese (Branta canadensis maxima) were extirpated from Iowa by the early 1900s due to unregulated hunting, egg gathering, and wetland drainage in the nineteenth century (Bishop 1978). Ef- forts to reintroduce Canada geese in Iowa began in 1964 (Bishop and Howing 1972) and involved releasing flightless adults and goslings at nearly 30 sites across the state (Zenner and LaGrange 1998a). In 1972, 13 flightless pairs were released at Rice Lake Wildlife Management Area (WMA; Bishop 1978). By 1989, the breeding population of Canada geese at Rice Lake WMA had increased to 420 nesting adults (G. G. Zenner, Iowa …


Assessing Parturition Date Synchrony For North Dakota Ungulates, Eric S. Michel, Jonathan A. Jenks, William F. Jensen Jun 2017

Assessing Parturition Date Synchrony For North Dakota Ungulates, Eric S. Michel, Jonathan A. Jenks, William F. Jensen

The Prairie Naturalist

Reproductive parameters such as conception date, and therefore parturition date, influence offspring characteristics such as sex ratio and birth mass. For example, late-conceiving reindeer (Rangifer tarandus) produced more female than male offspring compared to those who conceived early (Holand et al. 2006). Females that conceive later and therefore give birth later also can produce lighter offspring compared to those who conceive early (Schwartz et al. 1994, Holand et al. 2006). Because birth mass is positively related to adult body mass (Michel et al. 2015), conception and parturition date likely affect adult phenotype. In turn, this may influence survival because heavy …