Example of typical response curves (also called reaction norms). Organismal responses to changes in temperature are often represented in response curves that plot temperature vs. some measure of performance. These curves can be characterised by their shape parameters.

From Coping with Temperature at the Warm Edge – Patterns of Thermal Adaptation in the Microbial Eukaryote Paramecium caudatum – from Krenek et al. 2012. PLoS ONE 7(3):e30598