1. Watershed Studies Institute, Murray State University, Murray, Kentucky 42071; Hancock Biological Station, Murray State University, Murray, Kentucky 42071
2. Hancock Biological Station, Murray State University, Murray, Kentucky 42071; Department of Biological Sciences, Murray State University, Murray, Kentucky 42071
3. Watershed Studies Institute, Murray State University, Murray, Kentucky 42071; Department of Biological Sciences, Murray State University, 2112 Biology Building, Murray, Kentucky 42071