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Full-Text Articles in Physical Sciences and Mathematics
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 …
The Giant Cretaceous Coelacanth (Actinistia, Sarcopterygii) Megalocoelacanthus Dobiei Schwimmer, Stewart & Williams, 1994, And Its Bearing On Latimerioidei Interrelationships, David R. Schwimmer
The Giant Cretaceous Coelacanth (Actinistia, Sarcopterygii) Megalocoelacanthus Dobiei Schwimmer, Stewart & Williams, 1994, And Its Bearing On Latimerioidei Interrelationships, David R. Schwimmer
Faculty Bibliography
We present a redescription of Megalocoelacanthus dobiei, a giant fossil coelacanth from Upper Cretaceous strata of North America. Megalocoelacanthus has been previously described on the basis of composite material that consisted of isolated elements. Consequently, many aspects of its anatomy have remained unknown as well as its phylogenetic relationships with other coelacanths. Previous studies have suggested that Megalocoelacanthus is closer to Latimeria and Macropoma than to Mawsonia. However, this assumption was based only on the overall similarity of few anatomical features, rather than on a phylogenetic character analysis. A new, and outstandingly preserved specimen from the Niobrara Formation in Kansas …
Overview Of The Strategic And Structural Evolution Of The Talladega Slate Belt, Alabama Appalachians, Clinton Barineau
Overview Of The Strategic And Structural Evolution Of The Talladega Slate Belt, Alabama Appalachians, Clinton Barineau
Faculty Bibliography
The allochthonous Talladega belt of eastern-northeastern Alabama and northwestern Georgia is a northeast striking, fault bounded block of lower greenschist facies metasedimentary and metaigneous rocks that formed along the margin of Laurentia at or outboard of the seaward edge of the Alabama promontory. Bounded by metamorphic rocks of the higher grade Neoproterozoic(?) to Carboniferous eastern Blue Ridge on the southeast and unmetamorphosed to anchimetamorphic Paleozoic rocks of the Appalachian foreland on the northwest, the Talladega belt includes shelf facies rocks of the latest Neoproterozoic/earliest Cambrian Kahatchee Mountain Group, Cambrian-Ordovician Sylacauga Marble Group, and the latest Silurian(?) to uppermost Devonian/earliest Mississippian …
Paleobiology And Geochemistry Of Siliceous Concretions With Trilobites And Brooksella, David R. Schwimmer
Paleobiology And Geochemistry Of Siliceous Concretions With Trilobites And Brooksella, David R. Schwimmer
Faculty Bibliography
No abstract provided.
Strain Analysis On The Sub-Lay Dam Unconformity Near Jumbo, Alabama, Clinton Barineau
Strain Analysis On The Sub-Lay Dam Unconformity Near Jumbo, Alabama, Clinton Barineau
Faculty Bibliography
No abstract provided.
The Talladega And Ashland-Wedowee-Emuckfaw Belts Of Alabama: Geological Overview, Clinton Barineau
The Talladega And Ashland-Wedowee-Emuckfaw Belts Of Alabama: Geological Overview, Clinton Barineau
Faculty Bibliography
No abstract provided.
An Aphelaspis Zone (Upper Cambrian, Paibian) Trilobite Faunule In The Central Conasauga River Valley, North Georgia, Usa, David R. Schwimmer
An Aphelaspis Zone (Upper Cambrian, Paibian) Trilobite Faunule In The Central Conasauga River Valley, North Georgia, Usa, David R. Schwimmer
Faculty Bibliography
Middle and Upper Cambrian strata (Cambrian Series 3 and Furongian) in the southernmost Appalachians (Tennessee to Alabama) comprise the Conasauga Formation or Group. Heretofore, the youngest reported Conasauga beds in the Valley and Ridge Province of Georgia were of the late Middle Cambrian (Series 3: Drumian) Bolaspidella Zone, located on the western state boundary in the valley of the Coosa River. Two new localities sited eastward in the Conasauga River Valley, yield a diagnostic suite of trilobites from the Upper Cambrian Aphelaspis Zone. Very abundant, polymeroid trilobites at the primary locality are referable to Aphelaspis brachyphasis, which is a species …
Characteristics, Extent, And Tectonic Significance Of A Middle Ordovician Back-Arc Basin In The Southern Appalachian Blue Ridge, Clinton Barineau
Characteristics, Extent, And Tectonic Significance Of A Middle Ordovician Back-Arc Basin In The Southern Appalachian Blue Ridge, Clinton Barineau
Faculty Bibliography
A growing body of evidence suggests that a number of Ordovician-aged stratigraphic units in separate lithotectonic belts of the southern Appalachian orogen are genetically related, having formed in a back-arc setting on the Laurentian plate. Research on the Hillabee Greenstone in the Talladega belt and Pumpkinvinve Creek Formation and related bimodal metavolcanic rocks in the Dahlonega Gold belt suggest a similar temporal, spatial, and tectonic origin. Additionally, recent Ordovician isotopic ages for detrital zircons from the Wedowee and Emuckfaw Groups in the Ashland-WedoweeEmuckfaw belt of Alabama (eastern Blue Ridge), as well as stratigraphic correlations of these units with metasedimentary and …
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.