Actual extinction risks linked to climate change are almost double those that were predicted. Temperature, ocean acidity and other climate-related changes can set the stage for widespread extinctions by adding even more pressure to ecosystems already stressed by habitat loss, pollution, disease and other human-related impacts.
Maclean, I. & Wilson, R. (2011). Recent ecological responses to climate change support predictions of high extinction risk. PNAS 108(30), 12337-12342.