Figure 1.

Example showing how altering the temperature (defined by black line) by the same amount can lead to substantially different population impacts if the shapes of the TPCs differ between life stages (stage 1 in pink, stage 2 in teal). In this example, both life stages have the same thermal optimum (temperature at which performance is maximized), but as the temperature shifts away from the optimum (A-B-C), performance decreases slightly for the teal life stage but declines rapidly for the pink life stage.