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In omnivores, the carbohydrate fraction of the diet may frequently supply carbon for ne AA synthesis.In these cases, bone collagen δ13C values more closely reflect the isotope signature of total diet. Stable Carbon Isotope Analysis Stable carbon isotope values record the ratio of 13C/12C in the carbonates of tooth enamel or in the amino acid sequences that comprise bone collagen fibrils. Please feel free to contact us if you have questions regarding the applicability of stable isotope analysis to your research.
These values reflect reliance on plants that use the C3 versus C4 and CAM photosynthetic pathways for the following reasons.
Due to the diverse distribution of results, we deduced that the human remains were from the local mass grave.
This study supports and suggests the use of radiocarbon dating more frequently in the analysis of human skeletal remains.
We then conducted the radiocarbon analysis on seven femora (head and body portions), five mandibular teeth, and soil from the site through a request to the Korea Institute of Geoscience and Mineral Resources.
The results demonstrated that the estimated year of birth or death was prior to the 1950s.
Cool season grasses, trees, tubers and most bushy plants employ C3 photosynthetic mechanisms discriminating heavily against 13C, expressing a mean δ13C value of -26.7 2.7 ‰ (n=370) (Cerling et al. A small set of forbs and all warm-season grasses including maize (Zea mays), common to regions where daytime growing-season temperature exceeds 22o C and precipitation exceeds 25 mm (Ehleringer et al.