Tibisay Perez, Instituto Venezolano de Investigaciones Científicas, Caracas, Venezuela; University of California Berkeley, Environmental Sciences, Policy, and Management, Berkeley, United States, Whendee L Silver, University of California Berkeley, Department of Environmental Science, Policy, and Management, Berkeley, CA, United States and Sintana Vergara, Humboldt State University, Environmental Resources Engineering, Arcata, CA, United States