Paul Johnsgard: Comprehensive Vita And Bibliography, 2018 University of Nebraska-Lincoln
Paul Johnsgard: Comprehensive Vita And Bibliography, Paul A. Johnsgard
Papers in Ornithology
A current curriculum vitae and comprehensive bibliography for Paul A. Johnsgard, Foundation Regents Professor Emeritus at University of Nebraska-Lincoln. Dr. Johnsgard has been the author of (at least) 83 books, 140 journal articles or chapters, 100 reviews or popular articles; the subject of 7 profile articles; and the director for 12 Ph.D. dissertations and 12 M.S. theses—all listed here. Dates covered are 1953 through 2018. Dr. Johnsgard is also an illustrator and photographer.
Updated March 2018.
What’S At Steak? The Political Discourse Of Emissions Intensity And Implications Of Animal Agriculture, 2018 The University of San Francisco
What’S At Steak? The Political Discourse Of Emissions Intensity And Implications Of Animal Agriculture, Kalyn Simon
This thesis analyzes the international discourse of greenhouse gas emissions in relation to livestock production. Specific government ministries, research institutes, and multilateral organizations are framing a new strategy to mitigate emissions by using emissions intensity metrics. Emissions intensity is a ratio comparing emissions produced per unit of animal product as oppose to measuring absolute emissions. This research is acknowledged as a win-win scenario which allows for a reduction of greenhouse gas emissions while continuing production more efficiently. This thesis outlines the emergence of this metric in international discourse and the implications this shift has on the livestock sector globally. Ultimately ...
Evaluation Of Single Vs. Pair Housing Holstein Calves On Specific Antibody Concentrations To Klh, 2018 University of Tennessee, Knoxville
Evaluation Of Single Vs. Pair Housing Holstein Calves On Specific Antibody Concentrations To Klh, Chaney K. Morgan
University of Tennessee Honors Thesis Projects
No abstract provided.
Microbiome Of Commercial Broilers Through Evisceration And Immersion Chilling, 2018 University of Arkansas, Fayetteville
Microbiome Of Commercial Broilers Through Evisceration And Immersion Chilling, John A. Handley
Theses and Dissertations
The United States poultry industry generated 38.6 billion pounds (17,500 metric ton) of meat in 2014 which averaged to 121 pounds (55 kg) per individual of the U.S that same year. Of that meat generated by the poultry industry, an estimated 1 million cases of Salmonellosis will occur. Out of the 1 million cases approximately 40, 000 to 50,000 will be confirmed cases by the CDC. Recently, the USDA has requested changes in the inspection process and are currently allowing processors more freedom to utilize innovation to drive the increase in safer and more desirable foods ...
Bovine Mastitis Resistance: Novel Quantitative Trait Loci And The Role Of Bovine Mammary Epithelial Cells, 2018 Utah State University
Bovine Mastitis Resistance: Novel Quantitative Trait Loci And The Role Of Bovine Mammary Epithelial Cells, Jacqueline P. Kurz
All Graduate Theses and Dissertations
Bovine mastitis, or inflammation of the mammary gland, has substantial economic and animal welfare implications. A genetic basis for mastitis resistance traits is recognized and can be used to guide selective breeding programs. The discovery of regions of the genome associated with mastitis resistance, and knowledge of the underlying molecular mechanisms responsible, can facilitate development of efficient mastitis control and therapeutic strategies. The objectives of this dissertation research were to identify sites of genetic variation associated with mastitis resistance, and to define the contributions of the milk-secreting epithelial cells to mammary gland immune responses and mastitis resistance. Twenty seven regions ...
Targeted-Grazing As A Fuels Reduction Treatment: Evaluation Of Vegetation Dynamics And Utilization Levels, 2018 Utah State University
Targeted-Grazing As A Fuels Reduction Treatment: Evaluation Of Vegetation Dynamics And Utilization Levels, Travis Decker
All Graduate Theses and Dissertations
Wildfires have caused concern as they have increased in severity and intensity over the last few decades. Land managers have sought management actions to mitigate the risk of wildfire by reducing fuel loads, thus decreasing wildfire intensity. Camp Williams is a National Guard camp near Bluffdale, Utah, where small arms and artillery training occurs. Managers at Camp Williams have created fuel breaks by implementing targeted sheep and goat grazing to remove fine fuel and thin brush. Management objectives set utilization of fine fuels (herbaceous) at 80% by weight. Questions arose regarding the ecological impact of the prescribed grazing rates in ...
Further Investigation Of A Novel Rhabditid Nematode, 2018 Ohio Wesleyan University
Further Investigation Of A Novel Rhabditid Nematode, Evan Hudgens, Nathan Schmidt
Nematodes are among the most numerous and widespread animals on earth. The nematode Caenorhabditis elegans is a well-established model organism used for a wide-variety of studies ranging from biomedical to behavioral to ecological, and more. While C. elegans is well characterized, there are thousands of different species of nematodes, many of which have not been studied. We are characterizing several Rhabditid nematodes isolated in association with millipedes from both Ohio and Florida. Sequence analysis of rDNA genes supports that one of the species of worms we isolated is Oscheius myriophila. Other worms we isolated are similar, but we believe may ...
The Effects Of Habitat Composition On Red-Headed Woodpecker (Melanerpes Erythrocephalus L.) Population Density, 2018 Olivet Nazarene University
The Effects Of Habitat Composition On Red-Headed Woodpecker (Melanerpes Erythrocephalus L.) Population Density, Kimberly Zralka
Scholar Week 2016 - present
Declines in animal populations worldwide are of critical conservation concern. However, without an understanding of optimal habitat preference, it is often difficult to determine what factors are driving these losses. Red-headed woodpecker (Melanerpes erythrocephalus L.) populations have declined by over 70% in the last 50 years, and yet in some areas the birds seem to maintain stable populations. The aim of this study was to empirically test the effects of various habitat factors on red-headed woodpecker abundance. We were particularly interested in whether oak species (Quercus sp.) present in largely savanna environments (an endangered ecosystem in the Midwestern United States ...
Scorpions Of The Horn Of Africa (Arachnida, Scorpiones). Part Xvi. Compsobuthus Maidensis Sp. N. (Buthidae) From Somaliland, František Kovařík
Compsobuthus maidensis sp. n. from Somaliland is described and fully complemented with color photos of specimens, as well as its habitat. Data on the occurrence of the genus Compsobuthus Vachon, 1949 in the Horn of Africa is summarized.
Monitoring The Abundance Of American Shad And River Herring In Virginia's Rivers - 2017 Annual Report, 2018 Virginia Institute of Marine Science
Monitoring The Abundance Of American Shad And River Herring In Virginia's Rivers - 2017 Annual Report, Eric J. Hilton, Rob Latour, Patrick E. Mcgrath, Brian Watkins, Ashleigh Magee
This report describes the results of the twentieth year of a continuing study to estimate the relative abundance and assess the status of American shad (Alosa sapidissima) stocks in Virginia by monitoring the spawning runs in the James, York and Rappahannock rivers in spring 2017, evaluating hatchery programs, and contributing to coast-wide assessments (ASMFC 2007). We also report on two fishery-independent monitoring programs, one using staked gillnets in the Rappahannock River (year 2) and the other using anchor gillnets in the Chickahominy River (year 3; a major tributary of the James River),to determine relative abundance and stock structure for ...
Effect Of Vitrification On Epigenetic Modifications And The Meiotic Spindle Of Bovine Oocytes, 2018 Louisiana State University
Effect Of Vitrification On Epigenetic Modifications And The Meiotic Spindle Of Bovine Oocytes, Emilio Jose Gutierrez-Castillo
LSU Master's Theses
While oocyte vitrification has become a common practice, it still faces some challenges such as the low survival rates after warming, probably related to cryoinjuries and cryoprotectant (CPA) toxicity. Evidence suggests that vitrification might have an effect on the patterns of some epigenetic marks including DNA methylation and histone acetylation. During fertilization and embryogenesis, key events for healthy and adequate embryo development take place, not only governed by the information contained within the DNA sequence, but also by epigenetic mechanisms.
This study was aimed at determining the effect of vitrification and CPA exposure, using a combination of ethylene glycol (EG ...
The Subject Librarian Newsletter, Biology, Spring 2017, 2018 University of California, Irvine School of Law
The Subject Librarian Newsletter, Biology, Spring 2017, Sandy Avila
No abstract provided.
Scorpions Of The Horn Of Africa (Arachnida: Scorpiones). Part Xv. Review Of The Genus Gint Kovařík Et Al., 2013, With Description Of Three New Species From Somaliland (Scorpiones, Buthidae), 2018 Charles University
Scorpions Of The Horn Of Africa (Arachnida: Scorpiones). Part Xv. Review Of The Genus Gint Kovařík Et Al., 2013, With Description Of Three New Species From Somaliland (Scorpiones, Buthidae), František Kovařík, Graeme Lowe, Pavel Just, Ahmed Ibrahim Awale, Hassan Sh Abdirahman Elmi, František Šťáhlavský
We describe herein three new species of Buthidae: Gint amoudensis sp. n., G. gubanensis sp. n., and G. maidensis sp. n. from Somaliland. Additional information is provided on the taxonomy and distribution of other species of the genus Gint, fully complemented with color photos of live and preserved specimens, as well as of their habitat. The hemispermatophores of most Gint species are illustrated and described for the first time. In addition to the analyses of external morphology and hemispermatophores, we also describe the karyotype of four Gint species. The number of chromosomes is different for every one of the analysed ...
Soil Responses To 48 Years Of Continuous No Till And Conventional Till Corn In Central Kentucky, Usa, 2018 Murray State University
Soil Responses To 48 Years Of Continuous No Till And Conventional Till Corn In Central Kentucky, Usa, Emily Cook
Cropping systems, fertilizer applications and tillage practices influence soil physical and chemical characteristics. In this study, the impact of long-term conventional and no-tillage systems on selected soil properties were evaluated in a continuous corn system on a Maury silt loam soil. This field for the study is located on the University of Kentucky's Research Farm (Spindletop Farm). The field was tilled in 1969 from bluegrass sod and the first year's data was in 1970. Each plot is 20 ft. by 40 ft. and for many years each plot was split with winter cover crop planted to rye or ...
Emergence Of Zoos In The U.S. And A Search For The Exotic, 2018 Lynchburg College
Emergence Of Zoos In The U.S. And A Search For The Exotic, Austin M. Hutchinson
Student Scholar Showcase
The emergence of zoos in twentieth century America had many factors that contributed to their mission, success, and overall exotic nature. Zoos have been a part of human civilization for centuries, but it would not be until 1876 when the first zoo would appear in the United States. Individuals craved excitement and the use of exotic animals from all over the world became an important component of what zoos would become. This era coincides with the European colonization of Sub-Saharan Africa, known as the Scramble for Africa. Animals were brought from the so-called “Dark Continent” to be put on display ...
Eating Crickets? Nutrient Mineral Content Of Two Cricket Species And Chapul Cricket Protein Bars Using Mp-Aes, Nathan Hopkins
Student Scholar Showcase
Global agriculture is beset by numerous challenges which must be surmounted to feed a developing world, from combating climate change to the cultivation of sustainable food products. This, in addition to protein and nutrient deficiencies in the developing world, makes considering alternative protein sources, such as a crickets, an attractive option. Crickets use a fraction of the land and water that protein sources like beef cattle do, and can be cultivated in urban environments in stacked boxes. This research investigation aims to quantify the nutrient mineral content (Iron, Sodium, Potassium, Calcium, and Magnesium) of two cricket species (Acheta domesticus & Gryllodes ...
Effects Of Dimethyl Sulfoxide And Glycerol Based Vitrification Protocols On Zona Pellucida Hardening In Mature Bovine Oocytes, 2018 Louisiana State University
Effects Of Dimethyl Sulfoxide And Glycerol Based Vitrification Protocols On Zona Pellucida Hardening In Mature Bovine Oocytes, Kaci Denise Rogers
LSU Master's Theses
Zona pellucida hardening is a natural process that occurs after oocyte fertilization to prevent polyspermic fertilization and to protect embryonic development. Pre-fertilization hardening of the zona pellucida however, decreases fertilization rates. Cryoprotectants have also been shown to negatively affect fertilization rates, one possible mechanism of which being through zona hardening. This experiment was conducted to determine the effect of different cryoprotectants on hardening of the zona pellucida using fresh mature bovine oocytes and vitrified mature bovine oocytes. Oocytes were post-slaughter from mixed breed cows. After collection, oocytes were randomly assigned to three cryoprotectant treatment groups: dimethyl sulfoxide (DMSO), glycerol or ...
Effects Of Pre-Mortem Stress On Heat Shock Protein Expression And Oxidation Relative To Meat Quality, 2018 Utah State University
Effects Of Pre-Mortem Stress On Heat Shock Protein Expression And Oxidation Relative To Meat Quality, Kara Thornton-Kurth
Funded Research Records
No abstract provided.
Checklist Of The Avian Species Observed At The Gordon Natural Area (West Chester University, Pa) 2004-2018. Version Vii. Latest Observations From Ebird: 3/23/2018, 2018 West Chester University of Pennsylvania
Checklist Of The Avian Species Observed At The Gordon Natural Area (West Chester University, Pa) 2004-2018. Version Vii. Latest Observations From Ebird: 3/23/2018, Nur Ritter, Josh R. Auld
Gordon Natural Area Bird Survey Documents
No abstract provided.
The Effect Of Hypoxia On The Nervous System Of Aplysia Californica, 2018 University of Miami
The Effect Of Hypoxia On The Nervous System Of Aplysia Californica, Victor Escalona, Lynne Annette Fieber, Joseph Serafy
The intertidal zone of California’s Pacific coast is home to the marine snail known as Aplysia californica, an organism that has found use as a model in experiments focused on understanding the basis of learning and memory. Its simple nervous system consisting of easily identifiable neurons, its life span of a year, and a readily-accessed aquacultured source from the National Resource for Aplysia make it an excellent model for ontogenetic, neural, and behavioral studies. Here, however, the focus was on strategies this species uses to survive in an environment rife with risks of hypoxia and desiccation during the tidal ...