“…The δ 13 C and δ 15 N values of human bone will be discussed and interpreted here primarily using the 5‰ levels of TLE (Trophic level effect) but also taking the 3‰ level into account, an approach which has recently been frequently used (e.g., Basha, Chamberlain, Zaki, Kandeel, & Fares, ; Chen et al, ; Ciaffi et al, ; Fernandes, Grootes, Nadeau, & Nehlich, ; Halffman & Velemínský, ; Mörseburg, Alt, & Knipper, ; Nafplioti, ; Richards, Karavanić, Pettitt, & Miracle, ; Schutkowski & Soltysiak, ). The offset in δ 13 C is much smaller in human bone collagen when comparing with bones of animals likely consumed by humans (i.e., the TLE) and is sometimes given as an interval of +0.8 to 1.3‰ (Bocherens & Drucker, ), but mostly rounded off to the originally suggested +1‰ (DeNiro & Epstein, ) which is the value that will be employed in this study for the TLE.…”