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w słowach kluczowych: reconstruction of the diet of individuals

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Analiza trwałych izotopów węgla i azotu w szczątkach osobników pochowanych na grodzisku w Grzybowie

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Lisowska-Gaczorek A. , Szostek K. , Wrzesiński J.

Studia Lednickie

2022

tom 21

285-299

The teeth of the specimens explored at the Grzybowo site (a male Maturus and a child in the Infans I age category) were analysed for diagenesis, followed by carbon and nitrogen stable isotope composition. All the analysed samples were within the normal ranges of collagen diagenesis indicators, which allowed isotopic analyses. The child’s isotopic values indicate that he/she had access to maternal milk at the age of 3. The δ13C and δ15N isotopic delta values obtained for an adult in the collagen of tooth roots representing the period of mineralization of the aforementioned structures (13-16 years of age) indicate that the male was characterized by a terrestrial type of diet during the aforementioned period of life. A significant quantitative predominance in his diet (about 86% to 95%) was accounted for by plants of the C3 photosynthetic pathway (e.g., wheat, rye, barley, vegetables and fruits) and meat from animals consuming C3 plants. A small supplementation with products withigher (less negative) concentrations of δ13C (perhaps plants of the C4 pathway, e.g. millet) also cannot be ruled out. The analysis of the proportions of plant and animal proteins in the individual’s diet suggests that the male consumed similar amounts of protein from plants and animal meat.