Digital Commons Network^™

Abiotic Conditions, Algal Biomass & Fish Growth Rates Affect Fish Mercury Concentrations In Two Subarctic Lakes, Ari Yamaguchi

Theses and Dissertations (Comprehensive)

Kakisa Lake and Tathlina Lake, located in the Dehcho Region of the Northwest Territories, support important fisheries for the local Ka’a’gee Tu First Nation (KTFN). Recently, Walleye (Sander vitreus) of typical catch size in Tathlina Lake were found to have mercury concentrations above Health Canada’s commercial sale guideline of 0.5 ppm. Wild foods with elevated mercury concentrations can pose health risks to the humans who consume them, depending on consumption amounts and vulnerability factors such as age and pregnancy. Because wild fish can accumulate relatively high mercury levels and subsistence fishing contributes greatly to food security in northern …

Impacts Of Transportation Infrastructure On Water Quality, Sediment Loads, And Fishing Opportunities In The Gwich’In Settlement Area, Northwest Territories, Matthew Teillet

Theses and Dissertations (Comprehensive)

The addition of gravel sediment to build ferry landings on the Peel and Mackenzie Rivers has been an ongoing concern for the Gwich’in communities of Fort McPherson and Tsiigehtchic that depend on the rivers for their livelihoods. Specifically, there are concerns that gravel from ferry landings is degrading water quality, harming fishing opportunities, and altering river morphology downstream. Previous reports concluded that ferry operations were not impacting downstream ecology. However, past studies had methodological shortcomings and community concerns about the ferry landings remain. To study the impact of the gravel landings on water quality, I utilized a multidisciplinary study design …

Boreal Subarctic Lake Water Quality, Zooplankton Communities, And Benthic Macroinvertebrate Communities In Areas Impacted By Wildfire, Thomas J. Pretty

Theses and Dissertations (Comprehensive)

Wildfires are a natural phenomenon in the boreal forest, but recent studies suggest that there will be increases in the frequency and severity of fires in this region over the next century. When wildfires occur in lake catchments, they may affect water quality and invertebrate communities living in associated lakes. Invertebrates, including zooplankton and benthic invertebrates, play important roles in aquatic food webs, acting as conduits of energy from primary producers to larger organisms such as fish and water birds. Therefore, it is important to understand how these groups will respond to changes caused by fires. Unfortunately, few studies have …

Through The Lurking Glass: A Qualitative Media Analysis Of Traditional Gender Norms And Stalking Depictions In Film, Alexandra Baril

Theses and Dissertations (Comprehensive)

This thesis examines to what extent traditional gender norms are adhered to by the depiction of stalkers within films. Stalking has only recently been recognized as a social problem. Due to the relatively new attention, there has been a lack of research surrounding the way in which stalkers and stalking behaviours are being portrayed within popular media, particularly film media. This paper uses a qualitative ethnographic content analysis approach to examine these stalking depictions. Twenty films that had a high level of stalking portrayed behaviours, and thriller genres rather than horror genres, were collected and analyzed. It was found that …

Risk Factors Related To School Shootings, Best Anaele

Theses and Dissertations (Comprehensive)

School shootings have become a major issue in the United States for over the past 20 years, contributing to the resurgence of the debates surrounding gun control policies. However, further research is needed to better understand the risk factors of school shootings. The FBI constructed the Four-Pronged Threat Assessment Model, a risk assessment specifically applied to school shooters (O’Toole, n.d). Within the current study, the Four-Pronged Threat Assessment Model will be applied to five school shooters: Eric Harris, Dylan Klebold (both Columbine school shooters), Seung Heung Cho (the Virginia Tech School Shooter), Adam Lanza (the Sandy Hook School Shooter), and …

Age, Access, And Sweets-Motivation, Gehan Senthinathan

Theses and Dissertations (Comprehensive)

Availability can have profound influence on the consumption of foods and drinks. The 2-phase intermittent-continuous protocol (ICP) examines sucrose solution intake in two groups of rats and finds intermittent access significantly increases intake. In Phase I, rats receive intermittent or continuous access to a 4% sucrose solution, and with adults this results in a long-term elevation (a doubling) in the intermittent group. In Phase II, when rats are shifted to common sucrose schedule, this difference is maintained. Adult rats given 16% sucrose in Phase I do not differ in consumption, but in Phase II with 4% sucrose, an unexpressed elevation …

Exploring Upper Limb Sequence Behaviours In Egocentric And Allocentric Reference Frames, Robyn Brooke Grunberg

Theses and Dissertations (Comprehensive)

Voluntary behaviours, such as reaching, are essential for manipulating and exploring our environment. The current body of literature, however, has predominantly investigated reach behaviours through tasks such as peg-moving, tapping, dotting, and circle drawing. The objective of this study was to investigate the order and direction of reaching behaviours in a sequential tapping task in both an egocentric and an allocentric reference frame. Gaze behaviours were observed to explore intent to reach in the sequential task. Implementing reference frames in an upper limb motor control task might be of clinical importance when exploring rehabilitation techniques post-traumatic brain injury. It was …

Can Zooplankton On The North American Great Plains ‘Keep Up’ With Climate-Driven Salinity Change?, Mariam Elmarsafy

Theses and Dissertations (Comprehensive)

The Great Plains of North America are projected to become more arid as the climate changes over the next century. Salinity levels for lakes in this region are linked to climate, suggesting that lakes will become more saline as the climate becomes drier. One group of organisms that might be affected by increased salinity levels are the zooplankton, aquatic invertebrates that transfer energy from primary producers to macroinvertebrates and fish. Little is known about the ability of zooplankton to adapt to long-term increases in lake salinity levels. For my thesis, I used resurrection ecology to examine how a common zooplankter, …

Investigating Diel, Seasonal, And Interannual Variability Of Dissolved And Particulate Stable Carbon Isotope Values In A Eutrophic Boreal Lake, Rachel Henderson

Theses and Dissertations (Comprehensive)

Lakes are globally significant sources, sinks, and conduits of carbon. Cultural eutrophication of freshwater promotes the growth of phytoplankton blooms, which can transform, respire, and sequester large amounts of carbon. Analysis of stable carbon isotopes is a common tool to study the movement of carbon through the aquatic carbon cycle. The causes of temporal variability in δ¹³C values at different timescales are not well understood, and differ between lakes. In this study, I investigated diel, seasonal, and interannual variability in δ¹³C values of dissolved inorganic carbon (DIC) and particulate organic carbon (POC) in Lake 227, an …

Horizontal Transmission And Recombination Maintain Forever Young Bacterial Symbiont Genomes, Shelbi Russell, Evan Pepper-Tunick, Jesper Svedberg Svedberg, Ashley Byrne, Jennie Ruelas Castillo, Christopher Vollmers, Roxanne A. Beinart, Russell Corbett-Detig

Graduate School of Oceanography Faculty Publications

Bacterial symbionts bring a wealth of functions to the associations they participate in, but by doing so, they endanger the genes and genomes underlying these abilities. When bacterial symbionts become obligately associated with their hosts, their genomes are thought to decay towards an organelle-like fate due to decreased homologous recombination and inef- ficient selection. However, numerous associations exist that counter these expectations, especially in marine environments, possibly due to ongoing horizontal gene flow. Despite extensive theoretical treatment, no empirical study thus far has connected these underlying population genetic processes with long-term evolutionary outcomes. By sampling marine chemosynthetic bacterial-bivalve endosymbioses that …

Mitochondrial Dna Variation And Selfish Propagation Following Experimental Bottlenecking In Two Distantly Related Caenorhabditis Briggsae Isolates, Josiah Tad Wagner, Dana K. Howe, Suzanne Estes, Dee R. Denver

Biology Faculty Publications and Presentations

Understanding mitochondrial DNA (mtDNA) evolution and inheritance has broad implications for animal speciation and human disease models. However, few natural models exist that can simultaneously represent mtDNA transmission bias, mutation, and copy number variation. Certain isolates of the nematode Caenorhabditis briggsae harbor large, naturally-occurring mtDNA deletions of several hundred base pairs affecting the NADH dehydrogenase subunit 5 (nduo-5) gene that can be functionally detrimental. These deletion variants can behave as selfish DNA elements under genetic drift conditions, but whether all of these large deletion variants are transmitted in the same preferential manner remains unclear. In addition, the degree to which …

First Report Of Molecular Characterization And Phylogeny Of Trichuris Fossor Hall, 1916 (Nematoda: Trichuridae), Malorri R. Hughes, Deborah A. Duffield, Dana K. Howe, Dee Denver

Biology Faculty Publications and Presentations

Because species of Trichuris are morphologically similar and ranges of host preference are variable, using molecular data to evaluate species delineations is essential for properly quantifying biodiversity of and relationships within Trichuridae. Trichuris fossor has been reported from Thomomys spp. (Rodentia: Geomyidae, ‘pocket gophers’) hosts based on morphological features alone. Partial 18S rRNA sequences for specimens identified as T. fossor based on morphology, along with sequences from 26 additional taxa, were used for a phylogenetic analysis. Evolutionary histories were constructed using maximum likelihood and Bayesian inference. In both analyses, the specimens fell within the Trichuris clade with 100% support and …

Unveiling Crucivirus Diversity By Mining Metagenomic Data, Ignacio De La Higuera, George Kasun, Ellis L. Torrance, Alyssa A. Pratt, Amberlee Maluenda, Jonathan Colombet, Maxime Bisseux, Viviane Ravet, Anisha Dayaram, Daisy Stainton, Simona Kraberger, Peyman Zawar-Reza, Sharyn Goldstien, James V. Briskie, Robyn White, Helen Taylor, Christopher Gomez, David G. Ainley, Jon S. Harding, Rafaela S. Fontenele, Joshua Schreck, Simone Ribeiro, Stephen A. Oswald, Jennifer M. Arnold, François Enault, Arvind Varsani, Kenneth M. Stedman

Biology Faculty Publications and Presentations

The discovery of cruciviruses revealed the most explicit example of a common protein homologue between DNA and RNA viruses to date. Cruciviruses are a novel group of circular Rep-encoding single-stranded DNA (ssDNA) (CRESSDNA) viruses that encode capsid proteins that are most closely related to those encoded by RNA viruses in the family Tombusviridae. The apparent chimeric nature of the two core proteins encoded by crucivirus genomes suggests horizontal gene transfer of capsid genes between DNA and RNA viruses. Here, we identified and characterized 451 new crucivirus genomes and 10 capsid-encoding circular genetic elements through de novo assembly and mining of …

Menthol In Electronic Cigarettes: A Contributor To Respiratory Disease?, Vijayalekshmi Nair, Malcolm Tran, Rachel Z. Behar, Song Zhai, Xinping Cui, Rattapol Phandthong, Yuhuan Wang, Songqin Pan, Wentai Luo, James F. Pankow, David C. Volz, Prue Talbot

Civil and Environmental Engineering Faculty Publications and Presentations

Menthol is widely used in tobacco products. This study compared the effects of menthol on human bronchial epithelium using submerged cultures, a VITROCELL® cloud chamber that provides air liquid interface (ALI) exposure without solvents or heating, and a Cultex ALI system that delivers aerosol equivalent to that inhaled during vaping. In submerged culture, menthol significantly increased calcium influx and mitochondrial reactive oxygen species (ROS) via the TRPM8 receptor, responses that were inhibited by a TRPM8 antagonist. VITROCELL® cloud chamber exposure of BEAS-2B monolayers increased mitochondrial protein oxidation, expression of the antioxidant enzyme SOD2, activation of NF-κB, and secretion of inflammatory …

Li Zehou: Synthesizing Kongzi, Marx, And Kant, Andrew Lambert

Publications and Research

To understand the details of Li Zehou’s work, it is helpful to first locate it within the social and historical contexts to which Li was responding. Specifically, his work can be understood as a contribution to the struggle to establish the intellectual foundations of a Chinese modernity. As China transitioned away from the long-lived dynastic system that had ended early in the twentieth century, there was intense debate in China about what forms of social and political order should take its place. Marxism emerged as the governing ideology after the Communist revolution, but this did not settle the outstanding social …

John And Molly: A Methodist Mismarriage, Samuel J. Rogal

The Asbury Journal

No abstract provided.

A Simple, Inexpensive Method For Mark-Recapture Of Ixodid Ticks, Alexis White, Robin Minch, Lindsey Bidder, Holly Gaff

Biological Sciences Faculty Publications

Mark-recapture techniques have been widely used and specialized to study organisms throughout the field of biology. To mark-recapture ticks (Ixodida), we have created a simple method to mark ticks using nail polish applied with an insect pin secured in a pencil that allows for a variety of questions to be answered. For measuring tick control efficacy, estimating population estimates, or measuring movement of ticks, this inexpensive mark-recapture method has been easily applied in the field and in the lab to provide useful data to answer a variety of questions about ticks.

The Natural History Of The Marsh Rice Rat, Oryzomys Palustris, In Eastern Virginia, Robert K. Rose

Biological Sciences Faculty Publications

The marsh rice rat, Oryzomys palustris, is a common rodent in tidal marshes of eastern Virginia, including those on the barrier islands. It also is present in grassy old fields in upland habitats in the coastal plain and parts of the piedmont of Virginia. This report summarizes what has been learned in recent decades about the population biology of this species in Virginia, including aspects of behavior, density, diet, distribution, genetics, habitats, mammal associates, and reproduction.

A Survey Of The Reptiles And Amphibians At The University Of Georgia Costa Rica Field Station In San Luis De Monteverde, Costa Rica, John David Curlis, Elliot Convery Fisher, W. Kody Muhic, James Moy, Martha Garro-Cruz, José Joaquín Montero-Ramírez

Biological Sciences Faculty Publications

Reptiles and amphibians are experiencing declines across the globe. In Monteverde, Costa Rica, these declines and their underlying causes have been relatively well studied since the early 1990s, and many protected areas have been set aside to conserve these species. However, thorough surveys of the herpetofaunal diversity in these areas have been scarce over the last 20 years. We conducted a survey of all reptile and amphibian species at the University of Georgia Costa Rica (UGACR), a field station in San Luis de Monteverde. Herein, we present an annotated checklist of the 48 species (35 reptiles and 13 amphibians) that …

Translating Globally Threatened Marine Species Information Into Regional Guidance For The Gulf Of Mexico, Kyle Strongin, Beth Polidoro, Christi Linardich, Gina Ralph, Kent Carpenter

Biological Sciences Faculty Publications

A comprehensive understanding of the status of marine organisms in the Gulf of Mexico is critical to the conservation and improved management of marine biodiversity in the region. Threats and extinction risk, based on application of the IUCN Red List Categories and Criteria at the global level, were analyzed for 1,300 Gulf of Mexico marine species. These species include all known marine mammals, sea birds, marine reptiles, cartilaginous fishes, bony shorefishes, corals, mangroves, seagrasses and complete clades of select invertebrates. Analyses showed that 6% of these species are threatened, 2% Near Threatened, 9% Data Deficient, and 83% Least Concern. However, …

Ecosystem Services And Disservices Of Mangrove Forests And Salt Marshes, Daniel A. Friess, Erik S. Yando, Jahson B. Alemu I, Lynn-Wei Wong, Sasha D. Soto, Natasha Bhatia, S. J. Hawkins (Ed.), A. L. Allcock (Ed.), A. E. Bates (Ed.), A.J. Evans (Ed.), L. B. Firth (Ed.), C. D. Mcquaid (Ed.), B. D. Russell (Ed.), I. P. Smith (Ed.), S. E. Swearer (Ed.), P. A. Todd (Ed.)

Biological Sciences Faculty Publications

Coastal wetlands such as mangrove forests and salt marshes provide a range of important benefits to people, broadly defined as ecosystem services. These include provisioning services such as fuelwood and food, regulating services such as carbon sequestration and wave attenuation, and various tangible and intangible cultural services. However, strong negative perceptions of coastal wetlands also exist, often driven by the perceived or actual ecosystem disservices that they also produce. These can include odour, a sense of danger, and their real or perceived role in vector and disease transmission (e.g. malaria). This review provides an introduction to the ecosystem services and …

Workflow For Constructing Social Networks From Automated Telemetry Systems, Daizaburo Shizuka, Sahas Barve, Allison Johnson, Eric L. Walters

Biological Sciences Faculty Publications

1. Advances in datalogging technologies have provided a way to monitor the movement of individual animals at unprecedented spatial and temporal scales, both large and small. When used in conjunction with social network analyses, these data can provide insight into fine scale associative behaviors. The variety of technologies demand continuous progress in workflows to translate data streams from automated systems to social networks, based on biologically relevant metrics.

2. Here we present a workflow for generating flexible association matrices from automated radio-telemetry data that can be parsed into both spatial and temporal dimensions. These can then be used to generate …

The Role Of Warm, Dry Summers And Variation In Snowpack On Phytoplankton Dynamics In Mountain Lakes, Isabella A. Olesky, Whitney S. Beck, Roderick W. Lammers, Cara E. Steger, Codie Wilson, Kyle R. Christianson, Kim Vincent, Gunnar Forrest Johnson, Pieter T.J. Johnson, Jill S. Baron

Geology Faculty Publications and Presentations

Climate change is altering biogeochemical, metabolic, and ecological functions in lakes across the globe. Historically, mountain lakes in temperate regions have been unproductive because of brief ice-free seasons, a snowmelt-driven hydrograph, cold temperatures, and steep topography with low vegetation and soil cover. We tested the relative importance of winter and summer weather, watershed characteristics, and water chemistry as drivers of phytoplankton dynamics. Using boosted regression tree models for 28 mountain lakes in Colorado, we examined regional, intraseasonal, and interannual drivers of variability in chlorophyll a as a proxy for lake phytoplankton. Phytoplankton biomass was inversely related to the maximum snow …

Confucian Thought And Contemporary Western Philosophy, Andrew Lambert

Publications and Research

This chapter explores the encounter between the traditional Confucian thought and contemporary Anglophone philosophy. It explores the evolution in philosophical methods and heuristics employed by Anglophone thinkers in the past fifty or so years, often with the aim of extracting Confucian thought from its specific social and historical roots. Unlike the disciplines of intellectual or literary history, these philosophers have articulated dimensions of Confucian philosophy not explicit in traditional texts, developed critiques of Western modernity, derived solutions to problems in Western philosophy, and sought to reimagine Confucian thought for an East Asian modernity. Analyzing how contemporary philosophers have engaged the …

Incorporating The Internet In Learning By The Management Science Students And Its Effect On Their Academic Achievements, Shehzad Ahmad Dr, Rafiq Muhammad Dr, Sajjad Ahmad Sajjad

Library Philosophy and Practice (e-journal)

Abstract

Purpose: The study was planned with a clear purpose to examine how Management Science students incorporate the internet in their education and what outcomes it has on their academic performance.

Research Design: A quantitative survey approach was adopted. For this purpose data were collected from a sample of 225 Management Science students scattered in five selected universities of Khyber Pakhtunkhwa, Pakistan using non-random proportionate sampling technique.

Key Findings: The findings of the study indicate that 55% of students do not possess personal computer/Laptops. A vast majority of the respondents (79%) used the internet at their homes and 80% students …

Information Literacy Among Students Of The University Of Ghana Business School And Ghana Institute Of Management And Public Administration Business School, Prosper Kwame Amegashie, Samuel Ankamah

Library Philosophy and Practice (e-journal)

The acquisition of information literacy skills empowers students to understand the content, extend their research and assume greater control over their learning. The purpose of the study is to assess information literacy skills of levels 300 and 400 students of the University of Ghana Business School, Legon and Ghana Institute of Management and Public Administration Business School, Achimota. From a population of 2,579 respondents (students), a sample size of 202 that is, 86 UGBS and 116 GIMPABS were selected for the study. The questionnaire was used to gathered and analysed data. The findings of this study show that students agreed …

Libraries And Sustainable National Development In Nigeria, Idogbe, Ibukunoluwa M., Philip, Kathryn J. Dept Edutech And Library Science

Library Philosophy and Practice (e-journal)

Nigeria has changed in diverse sectors such as education, politics, agriculture, health, technology and so forth in view of development and modernisation across these sectors. Consequently, the diverse structure of Nigerias federalism is discussed in terms of the various development plans put forward by successive governments. This paper particularly noted the various institutional and special libraries as contributing to these strides with a responsibility of developing a literate community of its patrons. Some of the roles that libraries play in the development of Nigeria have been buttressed through various writers relayed in this paper. The work concludes that there is …

Hypothetical Human Immune Genome Complex Gradient May Help To Explain The Congenital Zika Symdrome Catastrophe In Brazil: A New Theory, F. R. S. Oliveira, C. C. Bresani-Salvi, C. N. L. Morais, A. W. Bigham, U. Braga-Neto, Gladys E. Maestre, John L. Vandeberg, E. T. A. Marques, B. Acioli-Santos

School of Medicine Publications

There are few data considering human genetics as an important risk factor for birth abnormalities related to ZIKV infection during pregnancy, even though sub-Saharan African populations are apparently more resistant to CZS as compared to populations in the Americas. We hypothesized that single nucleotide variants (SNVs), especially in innate immune genes, could make some populations more susceptible to Zika congenital complications than others. Differences in the SNV frequencies among continental populations provide great potential for Machine Learning techniques. We explored a key immune genomic gradient between individuals from Africa, Asia and Latin America, working with complex signatures, using 297 SNVs. …

Media Literacy To Overcome Cyberbullying: Case Study In An Elementary School In Bandung Indonesia, Nuning Kurniasih, Engkus Kuswarno, Andri Yanto, Dadang Sugiana

Library Philosophy and Practice (e-journal)

Cyberbullying of children is a very worrying phenomenon. Media literacy is needed to avoid children from cyberbullying. This study aims to formulate media literacy in children in primary schools on several research focuses, namely on how students' understanding of cyberbullying, efforts of students and schools to overcome cyberbullying and media literacy to overcome cyberbullying in elementary school students. The method used in this study is a qualitative research method with a case study approach. We selected the 5th-grade students and the teachers from a Private Elementary School in Bandung Indonesia to become research informants. Meanwhile, the triangulation is done through …

Integration Of Open Educational Resources Through Linked Data: Challenges And Benefits Review, Amna Farzand Ali, Dr.Nosheen Fatima Warraich

Library Philosophy and Practice (e-journal)

Purpose of the Study: This study explores that how Linked Data (LD) technology can be implemented in educational sector to use Open Educational Resources (OERs) more effectively or what kind of benefits and challenges it retains for educational sector. Because now teaching is supported and integrated with the use of different interactive resources such as videos, blackboards and virtually available platforms in formal and informal education. The objective of this research study is to highlight the nature of LD and OERs and their associated benefits and barriers for educational sector that are related to the adoption of LD technologies in …