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Seasonal Correlations Between Pueraria Montana Var. Lobata And Avian Species Diversity And Relative Abundance In Hamilton County, Tennessee, Amelia Hudson
Masters Theses and Doctoral Dissertations
Invasive species exist outside of their native ranges and can cause environmental harm where they have been introduced. One such species is kudzu (Pueraria montana var. lobata), an invasive vine in the southeastern U.S. Although kudzu is one of the most common invasive species management concerns in the Southeast, there is little quantitative data documenting its effects on native species. This study examines the seasonal correlations between kudzu and avian species diversity and relative abundance in Hamilton County, Tennessee. By measuring the characteristics of the overstory, midstory, and understory vegetation at sites with differing levels of kudzu coverage, I examined …
Assessing The Effects Of Invasive Ligustrum Sinense And Lonicera Japonica On Rare And Federally Threatened Scutellaria Montana, Jordan J. Sikkema
Assessing The Effects Of Invasive Ligustrum Sinense And Lonicera Japonica On Rare And Federally Threatened Scutellaria Montana, Jordan J. Sikkema
Masters Theses and Doctoral Dissertations
Few studies have directly evaluated the competitive interactions between invasive and co-occurring rare plants. Federally threatened Scutellaria montana Chapm. (large -flowered skullcap) is a rare herbaceous perennial endemic to southeastern Tennessee and northwestern Georgia. The forest understory habitat in which S. montana typically occurs often also contains invasive Ligustrum sinense (Chinese privet) and Lonicera japonica (Japanese honeysuckle), and these and other invasive plant species have been recognized as a potential threat to its conservation. To directly investigate the effects of invasive L. sinense and L. japonica on S. montana, a two-year field-based removal experiment was conducted in an S. montana …
Conservation Genetics And Population Status Of The Flame Chub, Hemitremia Flammea, Kathlina Frances Alford
Conservation Genetics And Population Status Of The Flame Chub, Hemitremia Flammea, Kathlina Frances Alford
Masters Theses and Doctoral Dissertations
The southeastern United States has a rich geologic history that contributed to the evolution of an extremely diverse aquatic fauna throughout the region. The Flame Chub, Hemitremia flammea, is a brightly colored, spring endemic minnow species native to the Cumberland, Tennessee, and Coosa river drainages. In this study, the cytochrome-b gene region was analyzed for 230 individuals from 29 populations across the three drainages. Results from maximum parsimony and Bayesian analyses recovered shallow divergence between the 31 haplotypes. AMOVA analyses indicated that most gene tic variation distributed within and between populations, not between drainages. Based on these results, this species …
A Vascular Flora Of Bendabout Farm, Bradley County, Tennessee And Survey Of Native Castanea Dentata (Marsh) Borkh. (Fagaceae, American Chestnut), Amelia Paige Harris
A Vascular Flora Of Bendabout Farm, Bradley County, Tennessee And Survey Of Native Castanea Dentata (Marsh) Borkh. (Fagaceae, American Chestnut), Amelia Paige Harris
Masters Theses and Doctoral Dissertations
The primary goal of this study was to inventory the flora of Bendabout Farm, a 1,467 ha privately-owned farm in Bradley County, Tennessee. A second goal was to conduct a census of the population and distribution of surviving Castanea dentata (Marsh) Borkh. (American chestnut) within the study area. Both natural/semi-natural and altered habitats were described during initial habitat characterization. The study recorded 433 species from 261 genera in 106 families. The study documented 250 new records for Bradley County. Special Concern Species, Panax quinqu efolius L., was vouchered, as were 68 non-native species. C. dentata were located using the sweep …
The Phylogeography Of The Short-Tailed Shrews (Genus Blarina) Of Southeast Tennessee, Casey Lee Carpenter
The Phylogeography Of The Short-Tailed Shrews (Genus Blarina) Of Southeast Tennessee, Casey Lee Carpenter
Masters Theses and Doctoral Dissertations
Understanding the distributions of organisms is key to deciphering their biogeography. Shrews of the genus Blarina are some of the most common and abundant mammals in this region. Two species are found in southeast Tennessee: Blarina brevicauda and Blarina carolinensis. To clarify their geographic ranges, Blarina vouchers were collected throughout the study area and mitochondrial DNA cytochrome b genes were isolated and sequenced. I collected and compared 53 DNA sequences from shrews throughout southeast Tennessee and southwest North Carolina to 101 samples obtained from Genbank. Results indicate Blarina brevicauda is found in areas north and west of the Tennessee River …
Arsenic Uptake By Beets (Beta Vulgaris) Cultivated In A Roxarsone-Contaminated Medium, Joel Andrew Houser
Arsenic Uptake By Beets (Beta Vulgaris) Cultivated In A Roxarsone-Contaminated Medium, Joel Andrew Houser
Masters Theses and Doctoral Dissertations
Arsenic (As) is a global toxicant that negatively impacts human health. Roxarsone (ROX) is an organoarsenical administered to poultry to control internal parasites. ROX is excreted from poultry unchanged and the waste may be used for vegetable fertilizer. This experiment was conducted with beets (Beta vulgaris) by adding 0, 1, 10, and 100 mg/kg As (T1, T2, T3, and T4 respectively, with ROX, presented as As concentrations) to a growing medium prepared with topsoil and other ingredients in a greenhouse pot experiment. The study aimed to determine effects of As-contaminated soils on biomass production, uptake of As by beets, and …
Chestnut (Castanea Spp.) Cultivar Evaluation For Commercial Chestnut Production In Hamilton County, Tennessee, Ana Maria Metaxas
Chestnut (Castanea Spp.) Cultivar Evaluation For Commercial Chestnut Production In Hamilton County, Tennessee, Ana Maria Metaxas
Masters Theses and Doctoral Dissertations
Chestnut cultivars were evaluated for their commercial applicability under the environmental conditions in Hamilton County, TN at 35° 13ꞌ 45ꞌꞌ N 85° 00ꞌ 03.97ꞌꞌ W elevation 230 meters. In 2003 and 2004, 534 trees were planted, representing 64 different cultivars, varieties, and species. Twenty trees from each of 20 different cultivars were planted as five-tree plots in a randomized complete block design in four blocks of 100 trees each, amounting to 400 trees. The remaining 44 chestnut cultivars, varieties, and species served as a germplasm collection. These were planted in guard rows surrounding the four blocks in completely randomized, single-tree …
An Assessment Of A Herpetofaunal Community In Hamilton, County, Tennessee: Baseline Ecology, Species Richness, And Relative Abundance, Joseph Frellen Simpson Iii
An Assessment Of A Herpetofaunal Community In Hamilton, County, Tennessee: Baseline Ecology, Species Richness, And Relative Abundance, Joseph Frellen Simpson Iii
Masters Theses and Doctoral Dissertations
Long-term investigations are needed to adequately assess herpetofaunal community structure and dynamics, and habitat alteration remains the most critical threat to these communities. Herein, I report on a 32-month study investigating species richness, abundance, sex ratios, and body sizes of amphibians and reptiles in a Hamilton County, Tennessee, wetland. Utilizing drift fencing in conjunction with pitfall arrays, a total of 14 reptile species and 16 amphibian species was recorded. Evenness was low among all study years due to large sample sizes of ambystomatid salamanders relative to all other species. Body sizes of Ambystoma were larger in females, and sex ratios …