Morin, Eugene

Testing the Validity of Dental Calculus as a Proxy to Bone in Paleodietary Studies Using Stable Isotope Analysis

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Names:
Creator (cre): Price, Samantha D.R., Thesis advisor (ths): Keenleyside, Anne, Degree committee member (dgc): Williams, Jocelyn S, Degree committee member (dgc): Morin, Eugene, Degree granting institution (dgg): Trent University
Abstract:

This study investigates the use of dental calculus for paleodietary studies using stable isotope analysis of a skeletal sample from the Greek colonial site of Apollonia Pontica, Bulgaria (5th to 3rd century BC). A sample of 27 individuals was used to examine the δ13C and δ15N values of paired dental calculus and bone samples, and the dental calculus was analyzed as separate organic and inorganic components. No significant correlation was found between the δ13C values of either the bone collagen and organic dental calculus samples, or the bone apatite and inorganic dental calculus samples. A significant correlation was found between the δ15N values of the bone collagen and organic dental calculus samples; however, the reason for this correlation is unclear. A greater range of variation in the δ13C and δ15N values was found in the organic dental calculus samples compared to the respective bone collagen samples. These results suggest that dental calculus is not an appropriate proxy to bone for paleodietary studies using stable isotope analysis and that any dietary signal is clouded by other data. The oral microbiome is considerably diverse and is the most probable explanation for the great range of stable isotope values obtained from dental calculus. A significant, strong correlation was found between the C/N ratios and δ15N values of the organic dental calculus samples, suggesting that the lowest C/N ratios and δ15N values depict deposits with the least bacterial alteration.

Author Keywords: carbon, dental calculus, nitrogen, paleodietary studies, Social Sciences, stable isotopes

2015

Holocene Resource Exploitation: A Zooarchaeological Analysis from Jacob's Island, Peterborough County, Ontario.

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Names:
Creator (cre): Csenkey, Kristen Anne, Thesis advisor (ths): Morin, Eugene, Degree committee member (dgc): Conolly, James, Degree committee member (dgc): Williams, Jocelyn, Degree granting institution (dgg): Trent University
Abstract:

This study uses the zooarchaeological record to examine the range of activities represented in Late Archaic period samples excavated from Jacob's Island -1B, in the Trent-Severn Waterway region in Ontario. Radiocarbon dates from sixteen features were used to establish a chronology of site use and occupation. The faunal remains analyzed in this study were recovered from seven dated mortuary features associated with human remains. The results of the faunal analysis suggest that Canis lupus familiaris was the primary species interred at Jacob's Island-1B. Small rodents, specifically Tamias striatus were also found in high abundance and are possibly the result of natural burrowing disturbances. Red ochre staining and low levels of burning were identified. Comparisons with other contemporaneous sites in the region indicate some variation in species composition. It is suggested that Canis lupus familiaris was associated with ritual and mortuary activities at Jacob's Island-1B.

Author Keywords: Canis lupus familiaris, Late Archaic Period, Ontario, Ritualsim, Zooarchaeology

2014