FIGURE 1.

Carbon and nitrogen isotope ratios of a representative sample of traditional (A) and market (B) food items, see Supplemental Table 1 for a complete list. Only foods with n > 2 are represented in this figure. Foods were assigned to groups, which are abbreviated in the legend as follows: AQ, aquatic; WF, waterfowl; TA, terrestrial animals; MI, mixed; TP, terrestrial plants; GV, grains and vegetables; D, dairy; ME, nontraditional meats; CC, corn and cane sugar based.