At the time of its construction (1971-1985), the Tennessee-Tombigbee Waterway was a highly scrutinized public works project, but the years after its construction have remained largely unexplored. Research in the John C. Stennis Collection, U.S. Army Corps of Engineers and Tennessee-Tombigbee Waterway Development Authority archives, and local newspapers, revealed that despite developers’ promise the waterway’s economic impact failed to live up to expectations, while its environmental influence more than exceeded them. Though rural southerners failed to benefit economically from the waterway, they embraced the environmental changes forced upon the project by the National Environmental Policy Act. Built as a promise of economic development, the Tenn-Tom offers a model of how economics and environmental forces intersected within the rural South. The waterway’s history as an economic and environmental force demands a reconsideration of the role of public works projects in southern environmental history.

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Thesis (M. En.)--Miami University, Institute of Environmental Sciences, 2006. / Title from first page of PDF document. Includes bibliographical references (p. 35 [1st set of paginations]).

A study of Asian clam (Corbicula fluminea Müller) colonization in relation to changes in aquatic vegetation community as a result of management of Hydrilla verticillata (L. f.) Royle with grass carp was conducted at the Lewisville Aquatic Ecosystem Research Facility (LAERF), Lewisville, TX, from April 2015 through October 2016. Percent vegetation cover, C. fluminea abundance and water quality metrics (pH, turbidity, conductivity, DO, calcium, chlorophyll a) from 16 experimental subjects were analyzed. Treatments included four replicated grass carp stocking densities; 1-control with no fish stocked (n = 4), 2-low density of 40-43 fish per vegetated ha (n = 4), 3-medium density of 72-81 fish per vegetated ha (n = 4) and 4-high density of 110-129 fish per vegetated ha (n = 4). Data analysis showed statistical significance in the relation of C. fluminea abundance to percent vegetation cover (multiple linear regression, r2 = 0.820), grass carp stocking densities (two-way analysis of variance, p = <0.001) and chlorophyll a (multiple linear regression, r2 = 0.339). Findings of this research indicate the possibility that management of hydrilla had enabled establishment of secondary invasive species.