Institution: | 1.U.S. Geological Survey, Reston, VA, 20192, USA ;2.U.S. Geological Survey, Lakewood, CO, 80225, USA ;3.Colorado School of Mines, Golden, CO, 80401, USA ;4.University of Texas at El Paso, El Paso, TX, 79968, USA ;5.U.S. Fish and Wildlife Service, Alamosa, CO, 81101, USA ; |