Figure 1: The cardiac responses to warming.
From: Atlantic salmon show capability for cardiac acclimation to warm temperatures

(a) Average maximum heart rates±s.e. of two populations of Atlantic salmon (Alta, N=5 and Dordogne, N=8 for both acclimation temperatures; otherwise indicated in parenthesis) acclimated to 12 and 20 °C during temperature increase. *Significant difference between acclimation groups; #significant difference between populations (three-way analysis of variance with Holm–Sidak post-hoc test, P<0.05). (b) Arrhenius plot of maximum heart rate. The dotted vertical lines indicate an Arrhenius break point temperature (TAB) for Dordogne and Alta populations.