1. Department of Earth and Planetary Science, UC Santa Cruz, Santa Cruz, California, USA
2. Department of Geoscience, Aarhus University, Aarhus, Denmark
3. University of Tennessee – Knoxville
4. Department of Geology and Geophysics, Louisiana State University, Baton Rouge, LA, USA
5. Center for Limnology, University of Wisconsin – Madison, Madison, WI, USA
6. Environmental Studies Program, Dartmouth College, Hanover, New Hampshire, USA