1. Professor, Dept. of Geological and Environmental Sciences, Hope College, P.O. Box 9000, Holland, MI 49422-9000 (corresponding author).
2. Undergraduate Student, Dept. of Geological and Environmental Sciences, Hope College, P.O. Box 9000, Holland, MI 49422-9000.
3. Associate Professor, Dept. of Environmental Studies, Univ. of North Carolina-Asheville, 1 University Heights, Asheville, NC 28804. ORCID: