Figure 3.

Community-level dietary diversity of medieval humans represented by posterior distributions of core isotopic niche area (‰²) by sites and regions in Central Asia. Isotopic niches were calculated by fitting standard ellipses to cover ca. 39% of the δ¹³C and δ¹⁵N data points using Bayesian inference. Black dots indicate area means, and the shaded boxes, from dark to light, represent the 50%, 75%, and 95% credible intervals.