This report summarizes the results of a rapid landscape-scale climate vulnerability assessment for the Gunnison Basin. The primary objective of this assessment was to determine what ecosystems/habitats and species are most at risk to climate change (and why) under climate change scenarios predicted for 2050. This report summarizes the results of a landscape-scale climate change vulnerability assessment of 24 ecosystems (17 terrestrial and seven freshwater ecosystems) and 73 species of concern (50 plants and 23 animals) in the Upper Gunnison Basin, Colorado.