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Source Partitioning Using Stable Isotopes: Coping with Too Much Variation

Figure 1

Two example simulated datasets and corresponding model performance on estimating the underlying parameters.

(A) Consumer (open circles and crosses) and source (filled squares) isotope values from two data sets with different between-individual variability in the animal isotope measurements (standard deviation σ = 0.1 for open circles, compared with 0.5 for crosses). (B) Posterior density estimates of the proportions for both models. The true values of the proportions are shown in the vertical lines. In both cases, the true proportions are inside the 95% credibility intervals of the posterior distributions.

Figure 1

doi: https://doi.org/10.1371/journal.pone.0009672.g001