1. U.S. Geological
Survey, Fort Collins Science Center, 2150 Centre Avenue, Building C, Fort Collins, Colorado 80526, United States
2. U.S. Environmental
Protection Agency, National Exposure Research Laboratory, Ecological
Exposure Research Division, 26 West
Martin Luther King Drive, Cincinnati, Ohio 45268, United States
3. Department of Earth & Environmental Sciences, Wright State University, Dayton, Ohio 45435, United States
4. Department
of Biology, Miami University, Oxford, Ohio 45056, United States