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Articles 31 - 60 of 186
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Detection And Occurrence Of Nerodia Harteri (Serpentes: Colubridae) In An Upper Portion Of The Brazos River Watershed, Jessica Yates
Detection And Occurrence Of Nerodia Harteri (Serpentes: Colubridae) In An Upper Portion Of The Brazos River Watershed, Jessica Yates
Electronic Theses and Dissertations
Semiaquatic snakes are disproportionately impacted by habitat alteration adjacent to wetlands because of their reliance on both terrestrial and aquatic habitats. Brazos River Watersnakes, Nerodia harteri, are endemic natricines with one of the most restricted geographic ranges in North America. I quantified detection and site occupancy probabilities of N. harteri and its sympatric congeners (N. erythrogaster and N. rhombifer), as well as microhabitat selection within the Nerodia community. Within occupied transects, search effort was positively correlated with detecting N. harteri, whereas environmental and/or habitat variables were better predictors for detecting the sympatric congeners. Microhabitat selection between …
Excremental Ecofeminism: Unearthing Waste’S Feminine And Narrative Agency In Early Modern Literature, Courtney Druzak
Excremental Ecofeminism: Unearthing Waste’S Feminine And Narrative Agency In Early Modern Literature, Courtney Druzak
Electronic Theses and Dissertations
This project seeks to understand the role of forms of waste in early modern literary texts. It both offers up a theory—known as early modern excremental ecofeminism—for reading period specific texts in relation to waste and articulates how we may do so through close analysis of Edmund Spenser’s Faerie Queene, John Milton’s Paradise Lost, the elegies of Mary Sidney Herbert, the sonnet sequence Pamphilia to Amphilanthus by Mary Wroth, John Evelyn’s Fumifugium, and finally, William Shakespeare’s play Antony and Cleopatra. It chooses a variety of genres across texts from the 1580s to the 1660s both to interrogate …
Seasonal Habitat Use Of Diamondback Terrapins (Malaclemys Terrapin) In North Inlet, Winyah Bay, Georgetown, South Carolina, Danielle Elizabeth Capella
Seasonal Habitat Use Of Diamondback Terrapins (Malaclemys Terrapin) In North Inlet, Winyah Bay, Georgetown, South Carolina, Danielle Elizabeth Capella
Electronic Theses and Dissertations
No abstract provided.
Identifying The Cardiovascular Effects Of Multiple Pollutants., Katlyn Elizabeth Mcgraw
Identifying The Cardiovascular Effects Of Multiple Pollutants., Katlyn Elizabeth Mcgraw
Electronic Theses and Dissertations
Cardiovascular disease (CVD) is the leading cause of death from environmental exposures. Although exposure to PM2.5 is an established risk factor for CVD, the contribution of other hazardous pollutant exposure to CVD is less clear. Overall, this work aimed to examine the effect of pollutants with lesser documented effects on cardiovascular disease using a multi-pronged approach to exposure assessment. The three aims were to examine the relationship between county-level toxic chemical releases and CVD mortality in the contiguous United States between 2002 and 2012, to assess the relationship between individual-level VOC metabolites and vascular function, and to build multipollutant …
Understanding Patterns And Functional Impacts Of An Invasive Tree And Its Biological Control In A Riparian System, Annie L. Henry
Understanding Patterns And Functional Impacts Of An Invasive Tree And Its Biological Control In A Riparian System, Annie L. Henry
Electronic Theses and Dissertations
Invasive species have become an inextricable part of the landscape, particularly in riparian plant communities, and removal is often a key component of restoration programs. Biological control (biocontrol) is a method of removal that is often both efficient and effective. However, the impact of biocontrol on target species and indirect effects from invasive species removal can be hard to predict. While monitoring the impact of invasive species removal usually involves some species-based assessment such as changes in diversity, historically dominant species or native species, these strategies do not typically provide insight into the mechanisms underlying plant community response to removal. …
Study On The Human Gut Bacteria Under Different Ecological Conditions: Antibiotic Perturbation And Dietary Quercetin, Shruti Shashidharan Menon
Study On The Human Gut Bacteria Under Different Ecological Conditions: Antibiotic Perturbation And Dietary Quercetin, Shruti Shashidharan Menon
Electronic Theses and Dissertations
The human intestine encompasses a vast community of microorganisms known as the gut microbiota that play a crucial role in maintaining health. Common perturbations such as changes in the normal diet, antibiotic treatment, and changes in environmental conditions can alter the gut microbiome. This can create dysbiosis in the gut leading to disease conditions. Therefore, it becomes important to determine the forces that influence the gut microbial ecology. In the first study, we focus on antibiotic perturbations on microbial succession and resilience in a synthetic consortium consisting of the most prevalent gut bacteria in humans. In addition, we investigated the …
Quantifying Microbial Resistance To Nematode Predation, Tyler Bacon
Quantifying Microbial Resistance To Nematode Predation, Tyler Bacon
Electronic Theses and Dissertations
The selection pressure of predation has encouraged the development of defense traits that can make an individual species more environmentally stable. In addition to biotic pressures, abiotic factors could lead to disruption of predator-prey balance within ecosystems. Consequently, it is significant to better understand how environmental factors can influence predator-prey interactions and how responses may, in turn, affect communities. A current challenge within microbial communities is to understand which intraspecific traits associated with such defense strategies are important for microbial-prey responses to predation, and how the responses vary across environments revealing GxE interactions. In this study, I examined microbial-predator prey …
Early Life History Of Tarpon (Megalops Atlanticus) In South Carolina Estuaries: Assessment Of Juvenile Recruitment And Validity Of Aging And Back-Calculation Methods, Garrett M. Elmo
Electronic Theses and Dissertations
No abstract provided.
Past, Current, And Future Potential Distributions Of Red Spruce And Fraser Fir Forests In The Southern Appalachians: Interpreting Possible Impacts Of Climate Change, Danika Mosher
Electronic Theses and Dissertations
Spruce-Fir forests are relicts from the Pleistocene and can only be found within the Southern Appalachians. Analyzing the relationships between species distribution, climatic parameters, topography, and biotic interactions through ecological niche modeling creates prediction maps for conservation efforts. Maxent, Boosted Regression, and Random Forest were utilized to compare which model and variable combinations best approximate the unique mountain forest environment. Maxent with a bias file produced optimal results and was used to examine distributional changes that may occur in the future and how these changes compare to paleo-environmental distributions. Fraser fir has shown evidence of being influenced by changing climates …
The Effects Of Elevation On Foraging Behavior Of Bats In Southern Appalachia, Victoria Long
The Effects Of Elevation On Foraging Behavior Of Bats In Southern Appalachia, Victoria Long
Electronic Theses and Dissertations
There are limited studies on bat activity in higher elevations in the Appalachian region. Levels of bat activity were compared in south central Appalachia at low (< 914.4 m) and high (> 1, 524 m) elevations in open, forest edge, and riparian habitats. Additionally, habitat suitability was modeled for a common species, big brown bat (Eptesicus fuscus). The study started May 27th 2019, and sites were monitored biweekly until October 2nd 2019. Six species and one genus were recorded during the study. Species from the Myotis genus were grouped together because of similar call characteristics. Results show that species were significantly more …
Assessing The Impact Of Restored Wetlands On Bat Foraging Activity Over Nearby Farmland, Philip Allagas
Assessing The Impact Of Restored Wetlands On Bat Foraging Activity Over Nearby Farmland, Philip Allagas
Electronic Theses and Dissertations
Up to 87% of the world’s wetlands have been destroyed, considerably reducing ecosystem services these wetlands once provided. More recently, many wetlands are being restored in an attempt to regain their ecosystem service. This study seeks to determine the effects of restored wetlands on local bat habitat use. Bat activity was found to be significantly higher around the wetlands when compared to distant grassy fields; however, no significant difference was found among the restored wetlands and a remote cattle farm containing multiple water features. Geospatial models of bat distribution and bat foraging were produced using machine learning that showed higher …
Land Use Influences Along Elevation Gradient On Macroinvertebrate Communities, Brittany Sprout
Land Use Influences Along Elevation Gradient On Macroinvertebrate Communities, Brittany Sprout
Electronic Theses and Dissertations
Land use activities have caused disturbances that affect the quality of freshwater ecosystems worldwide. How the influences of land use along an environmental gradient and the associated environmental variables that may influence stream diversity and function is unclear. We address these issues by studying biodiversity, abundance, and functional diversity of macroinvertebrates across different land types along a gradient in Colorado, USA. We also address how diversity may change along an elevation gradient by analyzing previously published macroinvertebrate research. We found evidence that land use and disturbance are stronger explanations of changes in macroinvertebrate communities, rather than elevation. Functional trait patterns …
Mechanistic Studies To Understand The Role Of Human Gut Microbiota In Colonization Resistance And Gut Health, Sudeep Ghimire
Mechanistic Studies To Understand The Role Of Human Gut Microbiota In Colonization Resistance And Gut Health, Sudeep Ghimire
Electronic Theses and Dissertations
Human gut microbiota is comprised of thousands of species which fall into two major categories or “enterotypes” based on dominating bacteria: “Bacteroides” and “Prevotella”. Bacteroides enterotype dominates the microbiota of the western population because of a high protein and fat diet, whereas Prevotella enterotype is dominate in the gut of the eastern population because of a high carbohydrate diet. While most of the microbiota studies focused on the Bacteroides enterotype using both metagenomics and culturomics, Prevotella enterotype is understudied, especially in the field of culturomics. The structure of the Prevotella dominated gut microbiome is revealed by …
Identification And Genomic Characterization Of Candidate Starch And Lactate Utilizing Bacteria From The Rumen Of Beef Cattle, Venkata Bandarupalli
Identification And Genomic Characterization Of Candidate Starch And Lactate Utilizing Bacteria From The Rumen Of Beef Cattle, Venkata Bandarupalli
Electronic Theses and Dissertations
The rumen functions as an anaerobic fermentation chamber where microbial communities ferment feedstuffs into SCFAs. These SCFAs are critical to the ruminant host since they fulfill 70% of its energy requirements. In intensive management systems, ruminants are fed with grain-rich diets, which contain high levels of starch that help meet the energy demands of high producing animals. When grain-based diets are fed to ruminants, ruminal amylolytic and lactate metabolizing bacteria predominate. Grain overload can cause rapid production and accumulation of lactate, resulting in proliferation of amylolytic bacteria and death of lactate metabolizing bacteria. Consequently, high lactate levels result in a …
Video Games, Influence, And Identification: The Perpetuation Of Culture Through Digital Worlds, Steven Zwier
Video Games, Influence, And Identification: The Perpetuation Of Culture Through Digital Worlds, Steven Zwier
Electronic Theses and Dissertations
Video games, through their widespread popularity and appeal, transmit meaningful ideas, beliefs, and attitudes via the use of digital worlds, narratives, characters, and play. Play has always held a key role in human life, but the video game medium accentuates and accelerates the reach and impact of play on human users. Jacques Ellul’s philosophy of social propaganda and Kenneth Burke’s rhetorical theory each offer important implications to the persuasiveness of video games; however, when placed in conversation with one another, the union of Ellul and Burke leads to a more complete understanding of how video games have such an effect …
When Humanity Meets Technology: Contemplating Neil Postman's Critique Of Advertising, Yingwen Wang
When Humanity Meets Technology: Contemplating Neil Postman's Critique Of Advertising, Yingwen Wang
Electronic Theses and Dissertations
This project aims to contemplate Postman’s critique of advertising and offer insights to understand Integrated Marketing Communication (IMC) in today’s mediated environment. As an essential component of IMC, the history of advertising demonstrates and documents that the medium of communication has an extensive influence on IMC practices. The concern about how communication media affect human perception, understanding, and behavior, resides within the central claim of the study of media ecology. Thus, this project investigates IMC through the lens of Postman’s media ecology perspectives, and argues that Postman’s prescient ideas provide both hope and constructive insights. Moreover, Postman’s thermostatic perspective, rooted …
The Postman Always Rings Twice: Neil Postman's Views On Education Are Relevant Again In The 21st Century Classroom, Jennifer Spiegel
The Postman Always Rings Twice: Neil Postman's Views On Education Are Relevant Again In The 21st Century Classroom, Jennifer Spiegel
Electronic Theses and Dissertations
The public education system in America has long been criticized for its inability to prepare students for success as adults. While some engage in a narrative of blame, others ask what can be done to solve this problem. This dissertation examines a narrative crisis in the 21stcentury classroom through the lens of Neil Postman, a 20thcentury media ecologist whose fears about television may finally be realized with the advent of the personal digital device and its impact on the educational sphere. First the past narratives that guided the American school system will be traced from colonial …
Ribbeting Results: Emergent Infectious Diseases In Wetland Systems, Ariel Horner
Ribbeting Results: Emergent Infectious Diseases In Wetland Systems, Ariel Horner
Electronic Theses and Dissertations
North American amphibians have recently been impacted by two major emerging pathogens, the fungus Batrachochytrium dendrobatidis (Bd) and iridoviruses in the genus Ranavirus (Rv). Environmental, seasonal and host factors may play important roles in disease dynamics, but few studies incorporate these components into their analyses. Here, we investigated the role of environmental, seasonal, genetic and location effects on driving Bd and Rv infection prevalence and severity in a biodiversity hot spot, the southeastern United States. We used quantitative PCR to characterize Bd and Rv dynamics in natural populations of three amphibian species: Notophthalmus perstriatus, Hyla squirella and Pseudacris ornata and …
Long-Term Carbon And Copper Impact On Nutrient Removal Via Green Sorption Media In Dynamic Linear Ditch Environments, Diana Ordonez
Long-Term Carbon And Copper Impact On Nutrient Removal Via Green Sorption Media In Dynamic Linear Ditch Environments, Diana Ordonez
Electronic Theses and Dissertations
Nutrient-laden stormwater runoff causes environmental and ecological impacts on receiving water bodies. Biosorption Activated Media (BAM) composed of the sand, tire crumb, and clay have been implemented in stormwater best management practices due to its ability to efficiently remove nutrients from stormwater runoff, such as in roadside linear ditches, via unique chemophysical and microbiological processes. In this study, a set of fixed-bed columns were set up to simulate some external forces in roadside linear ditches and examine how these external forces affect the performance of BAM. In our experiment, scenario 1 simulates the impact that animals such as tortoises, moles …
Comparative Nutrient Removal With Innovative Green Soprtion Media For Groundwater And Stormwater Co-Treatment, Dan Wen
Electronic Theses and Dissertations
As indicated by the National Academy of Engineering, the understanding of nitrogen cycle has been deemed as one of 14 grand challenges in engineering of the 21st century. Due to rapid population growth and urbanization, the stormwater runoff increased in quantity as well as its nutrient concentrations, which may trigger serious environmental issues such as eutrophication in aquatic systems and ecosystem degradation. This study focuses on stormwater and groundwater quality control via Biosorption Activated Media (BAM) which can be applied to enhance the nutrient removal potential as an emerging Best Management Practices (BMPs). BAM was tested in this study with …
Investigating The Late Woodland Climate Of Old Tampa Bay, Florida, Jaime Rogers
Investigating The Late Woodland Climate Of Old Tampa Bay, Florida, Jaime Rogers
Electronic Theses and Dissertations
Tampa Bay and the broader Central Gulf Coast region of Florida bear evidence of site reduction and population decline during the onset of the Late Woodland period (AD 500-1000). Concomitantly, Weeden Island culture flourished to the north, while climatic instability loomed to the south. It is unclear if the site abandonments in the area between the two are related to social or cultural change, an unstable climate, or a combination thereof. Interdisciplinary research has provided evidence for climate change and sea level regression during the sixth and seventh centuries in Southwest Florida, but these variables have yet to be investigated …
Acoustic Ecology And Sound Mapping The University Of Central Florida Main Campus, Robert Clarke
Acoustic Ecology And Sound Mapping The University Of Central Florida Main Campus, Robert Clarke
Electronic Theses and Dissertations
"Acoustic Ecology and Sound Mapping the University of Central Florida Main Campus" explores the intersection of place and space, sound studies and acoustic ecology, visualization, and archives. The end result consists of a collection of "soundwalk" and stationary recordings conducted from 2016-2019 at the University of Central Florida (UCF) main campus in Orlando presented as an online Sound Map. This archive previously did not exist and provides a snapshot of the various sounds heard throughout the campus as well as a starting point and context for future research into this still-emerging field of acoustic ecology and sound studies. While the …
Discarnation: Expounding On Marshall Mcluhan's Critique Of Modern Subjectivity, Amanda Sevilla
Discarnation: Expounding On Marshall Mcluhan's Critique Of Modern Subjectivity, Amanda Sevilla
Electronic Theses and Dissertations
This project presents Marshall McLuhan’s work as an explication of discarnate subjectivity in mediated environments, with special focus on the consequences of technological environments in society. The first and second chapters focus on McLuhan’s ground, sensibilities, and practice to shed light on his intricate discussions of social perceptions emerging in modern times—i.e., communal awareness propels perceptual and cultural shifts. The third chapter attends to people’s perceptual compass, or their ability to interpret the world around them. Chapter four considers some of the phenomenological aspects of McLuhan’s probes. The ideas show disconnects between time and space that contribute to discarnation in …
Lead And Crime: An Ecological Study Between Lead Contaminated Topsoil And Violent Crime., Brian Guinn
Lead And Crime: An Ecological Study Between Lead Contaminated Topsoil And Violent Crime., Brian Guinn
Electronic Theses and Dissertations
Lead is a known neurotoxicant. Human exposure to lead comes primarily through environmental exposures, including remnant lead paint, lead contaminated topsoil and lead contaminated water. Prenatal and early life lead exposure has been associated with numerous neurocognitive and neuropsychiatric disorders. This dissertation presents findings from an ecological study which evaluated the geospatial association between topsoil lead content and the incidence of FBI designated violent crime in Jefferson County, Kentucky. A total of 412 topsoil samples were collected along roadways (n=300) and from Louisville Metro Parks (n=112). Jefferson County crime data was obtained from the Louisville Metro Police Department – Crime …
Bryophyte Assemblages On American Hornbeam (Carpinus Caroliniana) And The Surrounding Arboreal Communities Within The Forest Of East Texas, Cassey Edwards
Bryophyte Assemblages On American Hornbeam (Carpinus Caroliniana) And The Surrounding Arboreal Communities Within The Forest Of East Texas, Cassey Edwards
Electronic Theses and Dissertations
The bryophytes, the non-vascular plants, include the mosses (Bryophyta with approximately 13,000 species), the liverworts (Marchantiophyta with approximately 5,000 species), and the hornworts (Anthocerotophyta with approximately 150 species). Initial observations indicated that the midstory tree Carpinus caroliniana Walter (American hornbeam) has a bryophyte composition with an unusually high diversity of leafy liverworts. Voucher samples were taken from the four intercardinal directions (Northeast, Northwest, Southwest, and Southeast) from six Carpinus trees and their nearest neighbor that was neither Pinus nor another Carpinus at each of six sites across East Texas. Percent coverage, species richness, Shannon’s diversity and Pielou’s evenness were computed. …
The Population Ecology And Behavior Of The Cave Salamander, Eurycea Lucifuga (Rafinesque, 1822)., Joseph Gavin Bradley
The Population Ecology And Behavior Of The Cave Salamander, Eurycea Lucifuga (Rafinesque, 1822)., Joseph Gavin Bradley
Electronic Theses and Dissertations
The Cave Salamander, Eurycea lucifuga (Rafinesque, 1822), is a little-known species, yet a common inhabitant of caves in the eastern United States. Salamanders are often important components of ecological communities and ecosystems, influencing critical processes such as nutrient cycling and community composition through their predation on invertebrates. Cave-dwelling salamanders such as E. lucifuga may thus appreciably influence the relatively simple ecosystems and communities of caves. Any such influence may be particularly important because these habitats and the organisms that reside in them are often of conservation concern. I used non-invasive methods to study the demographics, movements, and habitat selection of …
T Socio-Ecology Of Managed Honeybees (Apis Mellifera) In The Louisville Metro Area., Haileigh M. Arnold
T Socio-Ecology Of Managed Honeybees (Apis Mellifera) In The Louisville Metro Area., Haileigh M. Arnold
Electronic Theses and Dissertations
Humans have a long history of the practice of beekeeping to harness the power of pollination. This managed pollinator system consists of beekeepers, honeybees, and their environment. However, recent disease, pesticide use, and land use factors honeybee threaten this relationship. In the face of such concerns it is important to examine the factors that impact and can help sustain our managed pollinator systems. In this thesis, the national and Kentucky state-level policies that affect managed pollinator systems were examined and socio-ecological factors that may contribute to honeybee hive growth and losses were assessed along an urban development gradient in Louisville, …
Distribution, Ecology, Disease Risk, And Genetic Diversity Of Swift Fox (Vulpes Velox) In The Dakotas, Emily Louise Mitchell
Distribution, Ecology, Disease Risk, And Genetic Diversity Of Swift Fox (Vulpes Velox) In The Dakotas, Emily Louise Mitchell
Electronic Theses and Dissertations
The swift fox (Vulpes velox), a native species once abundant throughout the Northern Great Plains (NGP), has declined due to changes in land use, historic predator eradication programs, and predation by larger canid species. Currently, the species is estimated to occupy 44% of its historic range. In the NGP, the status of the swift fox varies by state, ranging from furbearer to endangered species. However, knowledge of the current status of swift foxes in the NGP is lacking due to an absence of systematic population monitoring. Improving the current state of knowledge concerning swift fox populations in the …
Vulnerability Of Protected Areas To Human Encroachment, Climate Change And Fire In The Fragmented Tropical Forests Of West Africa, Francis Kwabena Dwomoh
Vulnerability Of Protected Areas To Human Encroachment, Climate Change And Fire In The Fragmented Tropical Forests Of West Africa, Francis Kwabena Dwomoh
Electronic Theses and Dissertations
The Upper Guinean region of West Africa is home to some of the most globally significant tropical biodiversity hotspots, providing ecosystem services that are crucial for the region’s socio-economic and environmental wellbeing. Nonetheless, following decades of human-caused destruction of natural habitats, protected areas currently remain the only significant refugia of original vegetation relics in landscapes that are highly fragmented. Aside from having strong geographic variation in land use, climate, vegetation, and human population, the region has also experienced remarkable biophysical and socio-economic changes in recent decades. All these factors influence the fire regime and the vulnerability of forests within protected …
The Effects Of Acidic Conditions And Tannins On The Survival, Development, And Behavior Of Cope’S Gray Treefrog (Hyla Chrysoscelis), Caleb E. Dodd
The Effects Of Acidic Conditions And Tannins On The Survival, Development, And Behavior Of Cope’S Gray Treefrog (Hyla Chrysoscelis), Caleb E. Dodd
Electronic Theses and Dissertations
As amphibians decline around the world, freshwater acidification resulting from pollutants and acid rain may be a contributor. The ability of organisms to cope with environmental changes is greatly mediated by behavior, and recent studies indicate that anthropogenic acidification impairs behavioral responses by impacting olfactory abilities of aquatic organisms. Responding appropriately to novel stimuli is important for individual performance and survival, and pollutants may cause organisms to behave maladaptively. In this study I sought to: a) determine whether the oviposition site choices of adult female frogs correspond with the pH and tannin conditions that maximize tadpole survival and performance in …