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Showing 1 to 20 of 48 for “"Tennessee River"”.
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Three-dimensional hydrodynamic model set-up: a case study of middle Tennessee River
… and was tested by developing a test model for Tennessee River near Chattanooga area. The test model was developed for a 9.92 km long segment of the Tennessee River starting from the downstream of the Chickamauga dam to upstream of Moccasin island. The model was calibrated against measured water …
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The community ecology of a riverine turtle assemblage in the Tennessee River Gorge
… community ecology of a turtle assemblage in the Tennessee River Gorge relative to the following hypotheses: 1) ecologically generalized species will be the most numerically abundant forms present in the TRG, 2) adult sex ratios of turtle populations in the TRG will be biased in favor of males, …
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The vascular flora of the Tennessee River Gorge, Hamilton and Marion counties, Tennessee
An inventory of the vascular flora of the Tennessee River Gorge (TRG) was conducted between April 2009 and July 2011. The TRG is a 41-km-long river canyon located on the Cumberland Plateau physiographic province within Hamilton and Marion Counties, Tennessee. According to previous ecological …
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Spatial and temporal analysis of pharmaceutical concentrations and chitobiase activity in the Upper Tennessee River
Tennessee currently has the 3rd highest per capita prescription drug usage rate in the United States, yet no published studies have analyzed Tennessee surface waters for the presence of pharmaceuticals. Composite surface samples were collected upstream and downstream of sewage treatment plants and …
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Post-fledging habitat use and movements of worm-eating warblers in the Tennessee River Gorge
… transmitters to track fledgling WEWAs in the Tennessee River Gorge to study habitat components and daily movements. Results between fledgling location and random points indicate that degrees slope (gradient of a hillside) and leaf litter depth are significant characteristics of juvenile …
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Modeling Ecological Risks at a Landscape Scale: Threat Assessment in the Upper Tennessee River Basin
… data to evaluate impacts to five major biotic drivers: energy sources, physical habitat, flow regime, water quality, and biotic interactions. It assigns 3 final risk rankings based on a user-specified spatial grain. In a case study of the 5 major drainages within the upper Tennessee River basin …
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Where the Zigzags go: a microhabitat analysis for the Plethodon dorsalis complex within the Tennessee River gorge
… sampling of P. dorsalis is conducted in the Tennessee River Gorge (TRG). Sampling of survey polygons began on October 28, 2018 and concluded on June 8, 2019. Three 2,000 m² sites are selected based on presence of target species and a GIS processed land cover dataset in an attempt to best …
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Establishment of permanent plots and analysis of woody vegetation in the Tennessee River Gorge, Marion and Hamilton Counties, Tennessee
The Tennessee River Gorge (TRG) is a large river canyon 8 km west of Chattanooga, Tennessee, on the Cumberland Plateau. In 1984, the Tennessee Natural Heritage Program (TNHP) described 21 vegetation communities within the TRG. Permanent vegetation plots for the long-term study of 13 of these …
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Distributional analysis of the freshwater mussel fauna of the Tennessee River system, with special reference to possible limiting effects of siltation
Mussel studies in the Tennessee River drainage (1973 - 1982) examined ecology and distribution and investigated factors limiting to distribution. This river system presently supports 71 freshwater mussel species, 25% of which are endemic to the Cumberlandian Region. Species have been extirpated …
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Investigating the Life History, Demography, and Thermal Tolerances of Rare and Endangered Freshwater Mussels (Bivalvia: Unionidae) in the Upper Tennessee River Basin
… concern for Alabama, Georgia, North Carolina, Tennessee, and Virginia. Lasmigona holstonia remains very understudied, with key aspects of its life-history, biology, and thermal tolerances still unknown. In this study, I document mussel burrowing behavior, estimate population age structure, …
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Population biology and fish hosts of several federally endangered freshwater mussels (Bivalvia: Unionidae) of the upper Tennessee River drainage, Virginia and Tennessee
… for identifying host fishes of the upper Clinch River also was constructed. The key was constructed through the analysis of restriction fragment length polymorphisms from amplified regions of mussel DNA. Thirty-six unionid species were incorporated into the key. No host fishes were identified due …
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A study of aquatic sedimentation in Chattanooga, Tennessee, using GIS and remote sensing technology integrated with hydrodynamic and watershed models
… and hydrodynamic models and apply them on the Tennessee River and the surrounding tributaries to better assess the fate and transport of suspended sediment concentrations (SSC) there. The obtained results indicate that using Google Earth Engine (GEE), Landsat satellite can be used to estimate …
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Hazard assessment of a mixture of pharmaceuticals detected in the upper Tennessee River of Daphnia magna and the determination of riverine zooplankton assemblage as it relates to chitobiase activity
… on a mixture of pharmaceuticals found in the Tennessee River using Daphnia- magna as a surrogate. Endpoints measured were time to first brood, reproduction, mortality, and number of neonates produced per adult reproduction day. Reproduction was the only endpoint that showed a significant …
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Assessment of morphological and molecular genetic variation of freshwater mussel species belonging to the genera Fusconaia, Pleurobema, and Pleuronaia in the upper Tennessee River basin
… Pleuronaia were collected primarily in the upper Tennessee River basin from 2012 to 2014 for phylogenetic and morphological assessments. Freshwater mussels in these genera are similar in appearance, hence the need for phylogenetic verification and morphological assessment. Phylogenetic analyses of …
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Spatiotemporal patterns in the distribution and abundance of the introduced Redbreast Sunfish (Lepomis auritus) and native Longear Sunfish (L. megalotis; Centrarchidae) in reservoirs of the Tennessee River drainage
… Sunfish (Lepomis auritus) was introduced in the Tennessee River drainage (TRD) in the 1940s, and contemporary anecdotal evidence suggests that L. auritus is possibly displacing the native Longear Sunfish (Lepomis megalotis). This study aimed to characterize temporal patterns in regional …
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The phylogeography of the short-tailed shrews (genus Blarina) of southeast Tennessee
… 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 …
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Genetic and Morphological Analyses of Three Freshwater Mussel Species in Isolated River Drainages Across Appalachia
The Upper Tennessee River drainage of Virginia and Tennessee, Green River drainage of Kentucky, and Cumberland River drainage of Kentucky and Tennessee are known for their freshwater mussel species diversity. These river systems harbor dense populations of freshwater mussels that have significant …
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Systematics of the North American Crayfish Genus Orconectes (Decapoda: Cambaridae)
… endemic to the extreme lower Cumberland and Ohio river drainages in western Kentucky. The second species, now referred to as O. putnami lives in the lower Tennessee River drainage and while the third species, now referred to as O. illinoiensis, occurs in Ohio River tributaries of southeastern …
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Ecotoxicology and environmental education in the development of a turtle conservation program in Southeastern Tennessee
In 1999, the Tennessee Aquarium initiated a long-term mark-recapture study to promote the conservation of freshwater turtles in the Tennessee River Gorge (TRG). The TRG consists of a 42-kilometer stretch of the Tennessee River surrounded by 27,000 acres (11,000 hectares) and is known as the "Grand …
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