Figure 4
Trends and distributions of cortisol concentrations from adult Dolphin and Union caribou in feces and hair. Results of cortisol concentrations in feces (upper panel) and in hair from the neck (lower panel), showed by season and by the sampling method used to obtain the samples. Results of hair cortisol are plotted by the year in which the hair was grown. Cortisol data in feces from the fall 2018 appears as a dark horizontal line because it is only composed by two similar values (8.6 and 8.0 ng/g). The dashed lined in the lower panel graphs separates results that were analyzed in different laboratories and methods (2015 vs 2017–2020). Significant differences between the method of sampling are indicated with an asterisk.