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David Ashley, Ph.D.  (University of Nebraska–Lincoln)
is a professor in the Department of Biology at Missouri Western State University with teaching and research interests in cave ecology and invertebrate biology.  At RBS, he teaches the Cave Biology course.   Dr. Ashley is a member of the Missouri Academy of Science, the  Council for Undergraduate Research, Beta Beta Beta Undergraduate Biology Honor Society, National Speleological Society, Missouri Speleological Survey, and the Missouri Cave and Karst Conservancy.

Jan Barber, Ph.D.  (University of Texas–Austin)
is interested in the evolutionary relationships among flowering plants and how those relationships provide a framework for interpreting and understanding biological processes such as hybridization, chromosomal evolution and species diversification.  At RBS, she teaches the Spring Flora of the Ozarks course.  Dr. Barber holds a faculty appointment in the Biology Department at Saint Louis University and is also a Research Associate at the Missouri Botanical Garden in St. Louis.

Thomas Valone, Ph.D.  (University of Arizona)
is a professor in the Department of Biology at Saint Louis University with teaching and research interests in arid ecosystem ecology and conservation and the behavioral ecology of information use.  His research in arid ecosystems examines factors that affect the diversity of mammals, birds and plants.  Dr. Valone currently serves as the Director of Reis Biological Station.

Robert Wood, Ph.D.  (University of Alabama)
studies the phylogenetic systematics and historical biogeography of percid and cyprinid fishes.  His research involved the application of molecular and morphological methods to the resolution of questions regarding the evolution of the North American freshwater fish fauna with particular emphasis on species- and population-level genetic analysis of darters.  He is currently Chair of the Department of Biology at Saint Louis University.  At RBS, Dr. Wood teaches courses in Aquatic Ecology and Natural History of Vertebrates.