MEDINA FERRER, Fernando1, ROSEN, Michael R.2, FEYHL-BUSKA, Jayme3, RUSSELL, Virginia4, SØNDERHOLM, Fredrik5, LOYD, Sean6, SHAPIRO, Russell7, STAMPS, Blake W.8, PETRYSHYN, Victoria A.9, DEMIREL-FLOYD, Cansu10, BAILEY, Jake V.11, JOHNSON, Hope A.12, SPEAR, John13 and CORSETTI, Frank3, (1)Earth & Environmental Sciences, University of Minnesota, Twin Cities, Minneapolis, MN 55454, (2)California Water Science Center, US Geological Survey, 2730 North Deer Run Road, Carson City, NV 89701, (3)Department of Earth Sciences, University of Southern California, Los Angeles, CA 90089, (4)Plant and Microbiology, University of California, Berkeley, Berkeley, CA 94720, (5)Department of Geosciences and Natural Resource Management, University of Copenhagen, Copenhagen, Denmark, (6)Department of Geological Sciences, California State University, Fullerton, Fullerton, CA 92831, (7)Geological and Environmental Sciences, California State University at Chico, Department of Geological and Environmental Sciences, 400 West 1st. Street, Chico, CA 95929-0205, (8)UES, Inc., Dayton, OH 45432, (9)Environmental Studies Program, University of Southern California, Los Angeles, CO 90089, (10)School of Geosciences, University of Oklahoma, 100 East Boyd St., NORMAN, OK 73069, (11)Earth Sciences, University of Minnesota - Twin Cities, 310 Pillsbury Drive SE, Minneapolis, MN 55455, (12)Department of Biological Science, California State University Fullerton, 800 N. State College Blvd, Fullerton, CA 92831, (13)Department of Civil and Environmental Engineering, Colorado School of Mines, 1500 Illinois Street, Golden, CO 80401-1887