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Adapting New Technologies For Evaluating The Ecology And Distribution Of The Diamondback Terrapin (Malaclemys Terrapin) In Alabama, Nicole Mckim Conner
Adapting New Technologies For Evaluating The Ecology And Distribution Of The Diamondback Terrapin (Malaclemys Terrapin) In Alabama, Nicole Mckim Conner
All ETDs from UAB
The diamondback terrapin (Malaclemys terrapin), an emydid turtle that plays an important ecological role in salt marsh ecosystems, has declined over the last century and is listed as a Priority One Species (highest conservation concern) in Alabama. Traditional surveying techniques have been employed to monitor diamondback terrapins on the coast of Alabama throughout the last decade; yet, these techniques can be time-consuming, labor-intensive, and disruptive to terrapins and their habitats. This study evaluated the potential for UAS technology and eDNA methodologies to effectively monitor diamondback terrapin presence, abundance, and/or distribution in salt marsh habitats. UAS-based surveys were conducted in 2017 …
An Evaluation Of Ontogenetic Allometry Of Defensive And Nutrient Acquisition Properties Of Select Skeletal Components Of The Regular Sea Urchin Lytechinus Variegatus, Raven Amber Edwards
An Evaluation Of Ontogenetic Allometry Of Defensive And Nutrient Acquisition Properties Of Select Skeletal Components Of The Regular Sea Urchin Lytechinus Variegatus, Raven Amber Edwards
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Ontogenetic allometric analyses can provide novel insights into aspects of evolution, ecology, and conservation. For example, a recent study found marine fish exhibit hyperallometric scaling of reproductive output in relation to body size. Accordingly, to sustain fish populations the largest size class of fish should be protected. The present study exploits a model sea urchin to explore allometry to evaluate the ontogeny of skeletal defense and feeding efficiency (Aristotle's lantern). Lytechinus variegatus were sampled from St. Joseph Bay, Florida. A range of different sized late juvenile to adult individuals were measured and then dissected into skeletal components. Skeletal defense was …
Unicritical Laminations And D-Gons Of Single Critical Moment, Cameron Hale
Unicritical Laminations And D-Gons Of Single Critical Moment, Cameron Hale
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Laminations are a topological and combinatorial way to represent connected Julia sets of polynomials. A lamination is the boundary of the closed unit disk with a closed collection of chords that do not intersect on the interior of the disk. The standard d to 1 covering map of the circle represents the application of a degree d polynomial to its Julia set. The laminations of interest here are those that contain a d-gon which first returns to itself under the standard covering map by the identity (other polygons in laminations may first return rotated). It is known that a polygon …
Crystalline Structure And Phase Development In Tio2-Zro2 Ceramic Nanofibers From Electrospun Precursors, Lindsey Elizabeth Motlow
Crystalline Structure And Phase Development In Tio2-Zro2 Ceramic Nanofibers From Electrospun Precursors, Lindsey Elizabeth Motlow
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This study focuses on crystallization and phase relations for various molar ratios of the free-surface alternating current electrospun nanofibrous composite material, Zirconium Titanate. Both ZrO2 and TiO2 based ceramic nanomaterials have been of increasing interest in recent years for applications in pollutants abatement, water splitting, optical and memory devices, humidity sensors, high temperature pigments, and biomaterials. The mixed TiO2-ZrO2 system is a semiconducting oxide and photoactive system that has shown very promising properties in these applications, depending on structure and phase composition. Molar ratios of TiO2/ZrO2 from 0.1:0.9 to 0.8:0.2 were tested in this study. The precursor based fibrous materials …
An Assessment Of The Foundational Validity Of Firearms Identification Using Ten Consecutively Button Rifled Barrels, Brandon A. Best
An Assessment Of The Foundational Validity Of Firearms Identification Using Ten Consecutively Button Rifled Barrels, Brandon A. Best
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Individual characteristics, the marks that are unique to the tool that created them, are the basis of the comparative science of Firearm and Tool Mark Identification. The individual characteristics are created by microscopic imperfections or burrs in the firearm left during the various machining operations used in its manufacture. The depth, contour, and relative spatial orientation of the resulting striations left on the fired bullets are the subject of microscopic comparison to establish an association with or elimination from a particular firearm. Individual characteristics can be created from the combination of a multitude of factors. In this study, four aspects …
Laser Cooling Transitions In Atomic Gadolinium, Kevin Battles
Laser Cooling Transitions In Atomic Gadolinium, Kevin Battles
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Ultra-cold samples of atomic Gadolinium (Gd) are of interest for developing novel time-frequency standards, investigating strongly correlated Rydberg atoms, and state-of-the-art nanoscale applications. In this work, I present previous work in which the hyperfine coefficients and isotope shifts were measured for the first time in spin-forbidden transitions of atomic Gd, which are of interest for experiments investigating dipolar physics. The spin forbidden transitions are found to be too weak for use as laser cooling lines but would prove useful for developing a novel optical frequency standard due to the suppression of background blackbody radiation shifts and laser frequency shifts from …
A Modified Standard American Diet (Msad) Induces Physiological Parameters Associated The With Metabolic Syndrome In C57bl/6j Mice, Sophie Bru Chehade
A Modified Standard American Diet (Msad) Induces Physiological Parameters Associated The With Metabolic Syndrome In C57bl/6j Mice, Sophie Bru Chehade
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Obesity manifests physiologically in multiple organ systems of the body, typically increasing the risk of developing cardiometabolic disorders. Researchers have questioned the causative role that western dietary patterns have on disease pathogenesis and have speculated that quality and quantity of dietary fats and/or carbohydrates have a predictive role in the development of these disorders. Standard reference diets such as the AIN-93 rodent diet have historically been used to promote optimal animal model health and reduce variation of results across experiments. These diets have been invaluable to murine research; however, their translational value in studying human nutrition-related pathologies is limited. Early …
Evolution Of Growth Rates And Interspecies Interactions Of Prochlorococcus And Alteromonas Under Ocean Acidification Conditions, Matthew Kuhl
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Prochlorococcus is an unusually small and numerous genus of marine cyanobacteria which is thought to contribute 8.5% of marine primary production. Prochlorococcus lacks a gene for catalase, resulting in significant sensitivity to stress from reactive oxygen species (ROS), particularly hydrogen peroxide. Prochlorococcus is known to rely on other species of microbes in the ocean to degrade ROS, such as Alteromonas, a heterotrophic “helper” bacterium with which it is frequently co-located. However, it has been observed that Y2100 predicted ocean acidification conditions (800 ppm atmospheric CO2) reduce catalase production by Alteromonas strain EZ55, increasing oxidative stress on Prochlorococcus strain MIT 9312. …
An Investigation Of Ion Bombardment From Microwave Plasma Chemical Vapor Deposition During Bias Enhanced Nucleation Of Boron-Rich Materials, Bhavesh Ramkorun
An Investigation Of Ion Bombardment From Microwave Plasma Chemical Vapor Deposition During Bias Enhanced Nucleation Of Boron-Rich Materials, Bhavesh Ramkorun
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This study involves an Ar/H2 plasma acting on a negatively DC-biased silicon sub-strate in a microwave plasma chemical vapor deposition. The flow rate of hydro-gen was constant at 500 sccm, and that of argon was varied between 0 sccm and 500 sccm. Bias current was recorded for several values of the applied bias voltage ranging from – 100V to – 340V. At 10 and 20 torr, a peak in the bias current was found as argon flow rate changed. A decrease in current with varied argon intensi-ty in glow discharge plasma has been reported in the literature. Our results sub-stantiate …
The Reproductive Ecology Of The Diamondback Terrapin (Malaclemys Terrapin Pileata) In Coastal Alabama: Implications For Conservation Amid Global Climate Change, Catherine Audrey Sirgo
The Reproductive Ecology Of The Diamondback Terrapin (Malaclemys Terrapin Pileata) In Coastal Alabama: Implications For Conservation Amid Global Climate Change, Catherine Audrey Sirgo
All ETDs from UAB
The diamondback terrapin is the only emydid turtle within the United States that exclusively resides in salt marsh habitats. Over the past century, the species has seen dramatic declines in numbers due to being exploited for terrapin soup as well as other threats, including crab trap induced mortality, nest depredation, and habitat alteration or loss. In addition to these well-known historic threats, global climate change has become a growing concern due its potential threats on the terrapin and its habitat. The goal of this study was to assess the reproductive ecology of the Mississippi diamondback terrapins that reside within the …