Figure 5. Marginal posterior distributions of δ¹⁵N values for the two assumed foraging grounds (bell-shaped curves) and individual assignments to one of the two foraging grounds (filled circles in horizontal arrangement) with color-coded probabilities of belonging to the eastern Pacific foraging area.

Panel A is from Model 4, whereas the Panel B is from Model 6. For both models, posterior distributions depicted in red are from the ‘low δ¹⁵N’ (i.e. putative western Pacific foragers), whereas those in blue represent the ‘high δ¹⁵N’ group (i.e., putative eastern Pacific foragers).