Glenn Johnson is a Professor and Chair of the Biology Department at SUNY Potsdam, where he teaches conservation biology, ecology, dendrology and vertebrate biology courses mostly.  His main interest is Conservation Biology, especially endangered vertebrates and most particularly amphibians and reptiles. He coauthored a  field guide to amphibians and reptiles of New York.  Glenn taught a Dendrology (trees) course numerous times, including three times for SOAR.  He teaches Biology of Woody Plants at SUNY Potsdam in alternate years.

Classes:
Fall 2024 - Trees and Shrubs of the North Country [F-24-38]


Past Classes:
Fall 2023 - Trees and Shrubs of the North Country [F-23-47]
Fall 2022 - Trees and Shrubs of the North Country [F-22-30]
Fall 2018 - Trees and Shrubs of the North Country [F-18-57]
Fall 2014 - North Country Trees and Shrubs [F-14-44]
Spring 2011 - Amphibians and Reptiles of the North Country [S-11-3]
Fall 2010 - Trees of the North Country [F-10-48]