[1] Univ S Florida, Sch Geosci, Tampa, FL 33620 USA
[2] US EPA, Natl Hlth & Environm Effects Res Lab, Corvallis, OR 97333 USA
[3] Univ Florida, Sch Forest Resources & Conservat, Gainesville, FL 32611 USA
[4] Univ Western Ontario, Dept Biol, London, ON N6A 5B7, Canada
[5] US EPA, Natl Exposure Res Lab, Cincinnati, OH 45268 USA
[6] Univ Florida, Soil & Water Sci Dept, Gainesville, FL 32611 USA
[7] US EPA Reg 4, Athens, GA 30606 USA
[8] Univ Maryland, Dept Geog Sci, College Pk, MD 20742 USA
[9] Virginia Tech, Dept Forest Resources & Environm Conservat, Blacksburg, VA 24061 USA