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Full-Text Articles in Physical Sciences and Mathematics
Tolerance And Accumulation Of Copper, Lead And Zinc By Ceratopteris Richardii, Dorothy Jelagat Cheruiyot
Tolerance And Accumulation Of Copper, Lead And Zinc By Ceratopteris Richardii, Dorothy Jelagat Cheruiyot
Theses and Dissertations
Environmental contamination has increased rapidly in recent years. There is a need to develop cheap and environmentally friendly remediation methods. Numerous studies have evaluated the ability plants to remove contaminants from the environment. The present study evaluated the ability of Ceratopteris richardii gametophytes and sporophytes to tolerate copper, lead and zinc and for the sporophytes to accumulate the three metals in their shoots. Spores were sown in plant medium treated with varying concentrations of Cu, Pb and Zn. Fifteen-day- old sporophytes were transferred into medium mixed with varying concentrations of the three metals. Ceratopteris richardii tolerated and accumulated each of …
Life History Observations And Determination Of Potential Host Fish Species For Chipola Slabshell, Elliptio Chipolaensis, Lisa Preister
Life History Observations And Determination Of Potential Host Fish Species For Chipola Slabshell, Elliptio Chipolaensis, Lisa Preister
Theses and Dissertations
North America is home to nearly 300 species of freshwater mussels with approximately 80% being found in the southeastern United States. The Federally threatened species, Elliptio chipolaensis (Chipola slabshell), is considered an endemic species to the Chipola River Basin in the Florida panhandle. E. chipolaensis glochidia are released from the female in conglutinates The potential fish host species for Elliptio chipolaensis are the bluegill and redbreast sunfish. Sixty percent of the bluegill successfully transformed E. chipolaensis glochidia into juvenile mussels while 80% of the redbreast sunfish were successful.
Effect Of A Water Treatment Bmp On Nutrient Spiraling And Leaf Litter Breakdown In An Urban Stream, Megan Leclair Wheeler
Effect Of A Water Treatment Bmp On Nutrient Spiraling And Leaf Litter Breakdown In An Urban Stream, Megan Leclair Wheeler
Theses and Dissertations
Alterations to stream conditions caused by urbanization can compromise valuable ecosystem services, such as nutrient attenuation and carbon processing. A best management practice (BMP) water facility was installed to restore an impaired urban stream in Columbus, GA. This study was conducted to determine the effect of this BMP on nutrient spiraling and leaf litter decomposition in a 2 km stretch of Weracoba Creek. I hypothesized the BMP would (1) reduce leaf mass loss over time and (2) interfere with nutrient concentrations and uptake lengths. I characterized leaf litter decomposition using tulip tree leaves {Liriodendron tulipifera) in 1mm mesh bags deployed …
A Stratigraphic And Depositional Interpretation Of A Sand Quarry In Middle Georgia, Jessica Taylor
A Stratigraphic And Depositional Interpretation Of A Sand Quarry In Middle Georgia, Jessica Taylor
Theses and Dissertations
Analysis of sediments from two sand quarries in Mauk, Georgia indicate braided stream environment. Sediment samples of both Pleistocene and Cretaceous age were collected, sedimentary features such as trough cross-bedding along with laminar bedding were recorded, and photos were taken to document the scale and stratigraphic sequences of the sediments. Petrified wood was collected throughout the two sand quarries indicating a terrestrial origin. Post-depositional modifications seen at some of sites include load and flame structures. Sediment samples were examined for grain-size distributions and other sediment textures.