Investigating human paleodiet at Mesolithic Yuzhniy Oleniy Ostrov, Karelia using a multi-proxy stable isotope approach
Fig 5
Overview of δ13Ccol, δ13Capa and δ13CAA used to assess origin of dietary sources at YOO.
A) The relationship between human δ13Capa and δ13Ccol values from YOO plotted against diet-specific regression lines after Froehle et al. [28] (following [186]). B-D) Bivariate plots of B) δ13CPhe vs. δ13CVal, C) δ13CLys vs. Δ 13CGly-Phe and D) δ13CLys vs. Δ13CVal-Phe, showing the values from YOO humans and Lake Onega fish compared with published data from humans and animals with known dietary background data (65% confidence ellipses) [35,40,42,132,139,169,187]. The perch with anomalous bulk δ13Ccol values (see Results) potentially associated with an altered feeding ecology is marked with an asterisk.