Glenn Johnson is a Professor in the Biology Department at SUNY Potsdam, where he teaches conservation, ecology 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 and has authored numerous scientific papers and technical reports on threatened vertebrates in New York and Pennsylvania.

Classes:


Past Classes:
Spring 2026 - Conservation Efforts for Threatened North Country Wildlife [S-26-10]
Fall 2024 - Trees and Shrubs of the North Country [F-24-38]
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]