1. Natural Resources Research Institute, University of Minnesota, Duluth, Minnesota, USA
2. Cooperative Wetlands Center, Pennsylvania State University, University Park, Pennsylvania, USA
3. Bodega Marine Laboratory, University of California Davis, Bodega Bay, California, USA
4. Institute of Marine Sciences, University of North Carolina-Chapel Hill, Morehead City, North Carolina, USA
5. Department of Coastal Sciences, University of Southern Mississippi, Ocean Springs, Mississippi, USA
6. U.S. Environmental Protection Agency, National Center for Environmental Research, Washington DC, USA
7. U.S. Environmental Protection Agency, Environmental Monitoring and Assessment Program, Research Triangle Park, North Carolina, USA