Climate change and ecosystems

This report examines the basis for claims that projected human-induced climate change will have a severe impact on ecosystems. Past Marshall Institute Reports, most recently Climate Science and Policy: Making the Connection, have questioned the basis for projections that human activities will have a severe impact on the climate of the 21st century. This report does not repeat those arguments, but discusses the possible impact on ecosystems of different levels of climate change, as indicated by temperature increases, independent of time frame or cause.