Figure 4From: Spawning salmon disrupt trophic coupling between wolves and ungulate prey in coastal British ColumbiaSeasonal isotopic shifts in wolf hair. Seasonal isotopic shifts in δ13C and δ15N in wolf (Canis lupus) hair, collected in coastal British Columbia, 2001 to 2004. Seasonal shifts calculated by subtracting values in distal (summer-grown) hair segments from basal (fall-grown) hair segments.Back to article page