Larval Black Fly Diptera Simuliidae Populations As Indicators Of Water Quality Change In The Burned Areas Of Yellowstone National Park PDF Download

During the summer of 1988, extensive areas of Yellowstone National Park were burned by forest fires. In many areas, the vegetation of entire watersheds were completely consumed. This study was carried out during the spring and summer of the following year, 1989, in order to assess the effects of these fires and the resulting residues on populations of black flies larvae (Diptera: Simuliidae) in the streams. Because most black fly species are filter-feeders and can often be one of the more abundant groups in lotic systems, changes in population densities and/or species composition in burned versus unburned streams could indicate water quality change caused by the fire residue. -Introduction.