Figure 4 | Scientific Reports

Figure 4

From: Isotopic investigation of skeletal remains at the Imdang tombs reveals high consumption of game birds and social stratification in ancient Korea

Figure 4

Isotopic plot of humans from the Imdang tombs in relation to the potential five food sources generated by the MixSIAR model (A) and the relationship between the percent contributions of the game birds (GB) and terrestrial herbivores (TH) to each human (B). The previously published isotopic values of humans (n = 18) from Joyeung C56 are added and calculated using the MixSIAR model. Isotopic values of the five food sources were adjusted for trophic discrimination factors (C3 plant: Δ13C = 5.2‰ and Δ15N = 3.8‰; C4 plant: Δ13C = 4.5‰ and Δ15N = 3.8‰; animal: Δ13C = 1‰ and Δ15N = 3.8‰)33,34,69. In terms of contributions for each food to the human diet, there was a negative correlation between game birds and terrestrial herbivores (r = − 0.962, P < 0.0001).

Back to article page