IsoSource dietary mixing polygon for Eastern European grey wolves.

<p>The wolf <i>δ</i>¹³C and <i>δ</i>¹⁵N values are plotted with potential prey. Trophic enrichment values of 1.3‰ for <i>δ</i>¹³C and 4.6‰ for <i>δ</i>¹⁵N <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0039341#pone.0039341-FoxDobbs1" target="_blank">[17]</a> were added to the mean <i>δ</i>¹³C and <i>δ</i>¹⁵N values of potential prey. Stable isotope profiles are presented as mean and standard deviation for: (A) The entire wolf population. Contribution of each prey species to the diet is reported as the 25th to 75th percentile ranges of the estimated feasible distributions; (B) Subpopulations delimited based on microsatellite loci (NUC 1 and 2); (C) Subpopulations delimited based on mtDNA (MIT 1-4); (D) All analyzed individuals. Subpopulation MIT4 was represented by only one individual, and it was excluded from DISTLM analysis (see <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0039341#s2" target="_blank">Materials and Methods</a>). For standard deviation of prey stable isotope profiles, see <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0039341#pone.0039341.s002" target="_blank">Figure S2</a>.