Lisa S. Webb

Determining the water quality of estuarine ecosystems is difficult because of the environment's variable properties. Hexavalent chromium is a toxic metal found in estuarine ecosystems due to pollution from industrial surroundings, and methods are needed to determine biotic responses to chromium contamination. It is proposed that expression of the fatty-acid binding protein (FABP) gene in (Fundulus heteroclitus), a common estuarine inhabitant, and Inductively Coupled Plasma-Optical Emission Spectroscopy (ICP-OES) analytical techniques can be used as indicators of hexavalent chromium...

Beginning in the early 1900s, the original range and abundance of brook trout within Great Smoky Mountains National Park (GRSM) was drastically reduced due to landscape alterations resulting from increased logging and introduction of nonnative salmonid species. Consequently, brook trout populations retreated to the headwaters of most streams, resulting in geographic isolation due to waterfalls and eventual genetic differentiation of the fish inhabiting these streams. In an effort to reestablish LeConte Creek's extirpated brook trout population, GRSM fisheries managers collected fish from...