1. Department of Biology Virginia Commonwealth University Box 842012 1000 West Cary Street Richmond Virginia 23284 USA
2. Department of Civil, Environmental and Geodetic Engineering Ohio State University 2070 Neil Avenue Columbus Ohio 43210 USA
3. Department of Chemical and Biomedical Engineering Ohio State University 2070 Neil Avenue Columbus Ohio 43210 USA
4. Department of Plant Biology Franklin College of Arts and Sciences University of Georgia Miller Plant Science 120 Carlton St Athens Georgia 30602 USA
5. Joint Global Change Research Institute Pacific Northwest National Laboratory 5825 University Research Court College Park Maryland 20740 USA
6. University of Michigan Biological Station Pellston Michigan 49769 USA