Diet composition of wolves inferred from the stable isotope data using IsoSource for (A) subpopulations delimited based on mtDNA variability (MIT 1-MIT 4), (B) subpopulations delimited based on microsatellite variability (NUC 1, NUC 2), and (C) all individuals at average.

We report mean, standard deviation (SD) and 25th–75th percentile (25 and 75%ile) ranges. The mean values are given for comparative purposes only and should be treated with caution because of the lack of uniqueness of the mixing model results [24]. The result for the subpopulation MIT 4 is based on one individual only and therefore is biased. This individual has not been considered in any population-based analyses.