Ecology 5th Edition by Manuel Molles

Exercise 11

How can we be sure that the two distinctive responses to temperature shown by Atriplex lentiformis were due to acclimation and not the result of genetic differences (see fig. 5.13)?
Figure 5.13 Growing the same species of shrub in cool versus hot environments altered their optimal temperature for photosynthesis. This change was a short-term physiological adjustment due to acclimation (data from Berry and Björkman 1980, after Pearcy 1977).