Fig. 3: Scatter plots of δ13C values of C16:0 and C18:0 fatty acids determined by GC-C-IRMS. | Nature Communications

Fig. 3: Scatter plots of δ13C values of C16:0 and C18:0 fatty acids determined by GC-C-IRMS.

From: Neolithic culinary traditions revealed by cereal, milk and meat lipids in pottery from Scottish crannogs

Fig. 3

The plots show the δ13C values of C16:0 and C18:0 fatty acids prepared from total lipid extracts of the pottery from Loch an Duna (A), Loch Arnish (B), Loch Bhorgastail (C) and Loch Langabhat (D). All δ13C values obtained for modern reference terrestrial animal fats were from animals raised on pure C3 diet28 and have been adjusted for the post-Industrial Revolution effects of fossil fuel burning, by the addition of 1.2‰47. Reference values for aquatic fats are from marine species from UK waters, Atlantic and North Sea (marine) and a UK lake and Kazakh river (freshwater fish)48. The diagonal line separates the reference range of ruminant adipose and dairy fats. Lines connecting the ellipses represent theoretical δ13C values obtained through the mixing of these fats and are for orientation only. Extracts with cereal biomarkers are displayed as stars with bold labels. Source data are provided as a Source Data file.

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