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Demographic And Genetic Consequences Of Small Population Size In Remnant Populations Of Arabis Georgiana Harper (Georgia Rockcress), Alicia M. Garcia
Demographic And Genetic Consequences Of Small Population Size In Remnant Populations Of Arabis Georgiana Harper (Georgia Rockcress), Alicia M. Garcia
Theses and Dissertations
The goal of this thesis is to provide a greater scientific understanding of the demographic and genetic consequences of small population size in remnant populations of Arabis georgiana Harper (Georgia Rockcress). Specifically, 1 ) traits associated with phenological progression, fitness and reproductive success were compared between naturally occurring "native" plants and plants grown ex situ and subsequently restored to one of the largest remaining populations of A. georgiana, and 2) a preliminary analysis of population genetic structure in remnant populations across the species' range was performed. In addition to updating census information on remnant populations of A. georgiana, chapter one …
Determination Of Toxic Heavy Metals In Wet Deposition And Ambient Air In Columbus, Ga, Melissa K.M. Nestor
Determination Of Toxic Heavy Metals In Wet Deposition And Ambient Air In Columbus, Ga, Melissa K.M. Nestor
Theses and Dissertations
Atmospheric pollution is one of the most significant and potentially catastrophic environmental issues threatening the United States and the world today. One such source of this pollution is heavy metals. The impact of heavy metal pollution on living organisms can be disastrous, having the potential to cause the deterioration of ecosystems and posing danger to the health and survival of the human race. Chronic and acute human exposure to this type of pollution can damage the proper functioning of vital body organs by inhibiting important neurological pathways. In plants, it essentially acts as a counter-agent to proper growth. In areas …
Interspecific Hybridization Among Black Basses (Micropterus Spp.) In The Chattahoochee River, Columbus Georgia, Kimberly S. Holley
Interspecific Hybridization Among Black Basses (Micropterus Spp.) In The Chattahoochee River, Columbus Georgia, Kimberly S. Holley
Theses and Dissertations
Interspecific hybridization can lead to the evolution of a new hybrid species or extinction of parental species due to competition or excessive backcrossing, When parental populations differ in abundance, hybrids tend to backcross more frequently with the more abundant parent, resulting in asymmetrical introgression. The objective of this study was to determine the extent and apparent direction of hybridization between shoal bass {Micropterus cataractae), a rare endemic species to the Apalachicola drainage, and spotted bass (M. punctulatus), an introduced and more abundant species. Pelvic fin tissue (N = 130) was taken from bass species in the Chattahoochee River between Columbus, …
Host Fish Assessment And Gravidity For The Mussel Elliptoideus Sloatianus, Andrew Hartzog
Host Fish Assessment And Gravidity For The Mussel Elliptoideus Sloatianus, Andrew Hartzog
Theses and Dissertations
Elliptoideus sloatianus (purple bankclimber) is a freshwater mussel that m endemic to the Apalachicola River Basin, which includes the Chattahoochee, Flint, Chipola, and Apalachicola Rivers. Populations of E. sloatianus also exist in the Ochlockonee River, which discharges independently from the ACF basin into the Gulf of Mexico. In 1998, E. sloatianus was listed as federally threatened due to the loss of suitable habitat and the potential blockage of host fish passage into areas where the mussel lives. For this study, we located three populations of £. sloatianus in the Flint River in southwest Georgia. Gravid mussels were collected in late …
Chemoselective Oxidation Of 6,13-Bis(Decylthio) Pentacene, Claire Eunhye Cho
Chemoselective Oxidation Of 6,13-Bis(Decylthio) Pentacene, Claire Eunhye Cho
Theses and Dissertations
Organic semiconductors present much potential for industrial use because of their possible low cost production, Pentacene and pentacene derivatives are promising candidates for organic semiconductor research since their ^-conjugated electronic structures possess small HOMO- LUMO gaps and high field effect mobility. Whereas there is much potential in devices made from pentacenes they do however undergo short lifetimes and poor processability due to photodegradation and poor solubility of pentacene. Previous research has shown that the pentacene lifetime and solubility can be enhanced by arylthio and alkylthio substituents placed on the pentacene backbone. For example 6,13-i?/s(decylthio)pentacene was one of the longest lived …
Xmm-Newton Survey Of The Brightest Supernova Remnants In The Large Magellanic Cloud, Zachary I. Edwards
Xmm-Newton Survey Of The Brightest Supernova Remnants In The Large Magellanic Cloud, Zachary I. Edwards
Theses and Dissertations
Therefore, a realistic understanding of SN contribution from SNRs populations is needed to model the evolution of a galaxy.
An Investigation Into A Hybrid Genetic Programming And Ant Colony Optimization Method For Credit Scoring, Rojin Aliehyaei
An Investigation Into A Hybrid Genetic Programming And Ant Colony Optimization Method For Credit Scoring, Rojin Aliehyaei
Theses and Dissertations
This thesis proposes and investigates a new hybrid technique based on Genetic Programming (GP) and Ant Colony Optimization (ACO) techniques for inducing data classification rules. The proposed hybrid approach aims to improve on the accuracy of data classification rules produced by the original GP technique, which uses randomly generated initial populations. This hybrid technique relies on the ACO technique to produce the initial populations for the GP technique. To evaluate and compare their effectiveness in producing good data classification rules, GP, ACO, and hybrid techniques were implemented in the C programming language. The data classification rules were created and evaluated …