For many species, the threat of global warming is more than too much heat. You can get temperature-related effects that may not be what you expect. Subtle environmental change can interact with physiological needs to weaken the ability of a species to maintain a viable population even when the temperature rise is too mild to kill individual organisms.
Gee....I hate to say it but I think these species are SOL, as the climate has been getting "subtly" warmer for over 20,000 years.
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