Szpak, Paul

This research presents stable carbon and nitrogen isotope data of camelid fiber (n=238) from the coast of Arica, the Lluta Valley, and Azapa Valley – all located in the hyper-arid core of the Atacama Desert in northern Chile. Samples included are attributed to the Formative (1000 BCE– 200 CE), Middle (200 CE – 1000CE), and Late Intermediate (1000 CE – 1450 CE) periods. The principal aim of this research was to determine whether camelid fiber uncovered at archaeological sites on the coast were likely obtained from locally managed camelid herds, or whether fiber was traded from the highlands. The majority of samples are consistent with a highland origin; however, a small group of samples is consistent with having come from animals herded outside the highlands, possibly locally in the coastal river valleys. There was also an increase in fiber δ13C between the Formative and Late Intermediate Periods, indicating an increased reliance on maize and agricultural intensification between these periods.

Author Keywords: Camelid, Carbon, Chile, Keratin, Nitrogen, Stable isotope analysis

This research represents the first stable carbon and nitrogen isotope analysis of human bone collagen (n = 29) from the Escape Site (AD 300 - 1000), Saint Vincent. As a two-pronged investigation, this research had the following goals: (1) determining the ideal pretreatment for poorly preserved bones and (2) reconstructing the Escape Site sample population diet. By incorporating powdered specimens, shorter demineralizations and increased acid:sample exposure, higher collagen yields were produced, thereby expanding the sample size for isotopic analysis. Notably, the elemental data suggests that not all isolated collagen was biogenic and was perhaps contaminated by non-collagenous proteins. This highlighted the importance of using multiple criteria to rigorously evaluate collagen based on the full quality indicator profile. In the end, 5 individuals yielded useable isotope data which was consistent with a broad spectrum diet relying primarily on C3 plants as well as terrestrial, reef, nearshore and freshwater fauna. Within the broad region, the Escape Site data was comparable to other islands from the Lesser Antilles and Cuba emphasizing the influence of regional biodiversity as well as the likelihood that the studied population contributed and benefitted from the extensive Saladoid trade networks which existed at the time.

Author Keywords: Caribbean, Collagen, Escape Site, Human diet, Saladoid, Stable isotope analysis

This study uses stable isotope analysis on both the organic and inorganic fractions of ostrich eggshell obtained from archaeological excavations in Mongolia, northern China, and southern Siberia. By establishing the δ13Corg, δ15N, δ13Cinorg, δ18O isotopic compositions of the eggshell of the Asian ostrich (Struthio asiaticus), this study provides insight into the maximum northern range of the species, which I suggest reached Lake Baikal, Siberia through the late Pleistocene, up to the Last Glacial Maximum. Through these isotopic data, the interactions between S. asiaticus and human forager groups are explored, specifically the trade of ostrich eggshell by hunter/gatherer populations in the early/middle Holocene. Because of deviations from the correlation between δ18O and latitude observed for other sites, the site of Shabarakh-usu may have been an aggregation point for ostrich eggshell from other locations. Movement of eggshell is observable from north to south but not from south to north on the basis of eggshell δ18O. Finally, I am able to develop a hypothesis regarding the drivers of species extinction. Specifically, I discuss trade in eggshell leading up to extinction as evidence for human pressure on S. asiaticus at a time when environmental shifts likely isolated populations in small regions of habitable landscape. I therefore implicate both changing environmental conditions and human pressure in my proposed explanation for the extinction of S. asiaticus.

Author Keywords: Extinction, Holocene, ostrich, Pleistocene, Steppe, Struthio

The goal of the thesis is to establish the temporal patterning of the cultural complexes of the Middle to Late Woodland periods in Ontario. To do so I examine the statistical shape and phase boundaries of samples of radiocarbon dates associated with the Princess Point, Sandbanks, Glen Meyer, and Pickering archaeological complexes. The radiocarbon dates used for this thesis were collected through published sources, grey literature, and resources such as the Canadian Archaeological Radiocarbon Database. Each date was put through a data hygiene process and those deemed acceptable were merged into Summed Probability Distributions (SPDs) and further analysed through the r-carbon and OxCal packages. Bayesian statistics were used to estimate the start and end dates per complex, Shapiro-Wilks tests were used to examine the legitimacy of cultural entities, and the amount of geographic, and chronological overlap was determined by randomly sampling between the compared datasets to determine an acceptable threshold of randomness. Results indicate that the Princess Point complex does not meet the requirements of a culturally homogeneous archaeological cultural group. There is no difference in the Glen Meyer and Pickering radiocarbon patterns, which supports combining them into a single cultural designation. It was impossible to evaluate the Sandbanks complex due to a lack of radiocarbon data, although overall it seems to agree with the current understanding of the complex.

Author Keywords: Glen Meyer, Ontario Archaeology, Pickering, Princess Point, Radiocarbon, Sandbanks

Fatty acid analysis was performed on archaeological bone from various fauna from sites in the Canadian arctic to better understand the preservation of fatty acids and their potential applications to palaeoecological and palaeodietary studies. These data were complemented by analyses of modern bone and soft tissue samples from livestock and harp seals (Pagophilus groenlandicus). Results of modern analyses revealed that in terrestrial species, bone has inherently lower concentrations of most fatty acids relative to other soft tissues (adipose, marrow, and muscle). These analyses suggest that the distribution of fatty acids in bone is unique compared to other tissues, and the types and abundances of fatty acids in bone may be linked to dietary sources of lipids. Of the archaeological samples analyzed, terrestrial species (caribou [Rangifer tarandus]) generally exhibited higher concentrations of saturated fatty acids compared to marine species (ringed seals [Pusa hispida] and polar bears [Ursus maritimus]), whereas marine species had higher concentrations of monounsaturated fatty acids compared to terrestrial species. Results of analyses on both modern and archaeological samples provided insight into the degradation of fatty acids in bone, and the rapid loss of polyunsaturated fatty acids in particular. Because the abundances of fatty acids are likely altered in the burial environment, it is recommended that future analyses incorporate compound specific isotope analysis to focus on applications of fatty acids that are typically in the highest abundance and arguably have undergone the least amount of change, including palmitic (C16:0) and stearic acid (C18:0)

Author Keywords: Archaeological Science, Bone Lipids, Fatty Acid Analysis, GC-MS, Lipid Preservation, Palaeoecology

The Upper Paleolithic sequence at Vale Boi, Portugal, represents an early example of resource intensification, for which evidence of both diet diversification and intensified utilization of faunal remains has been published. The current research project tests the hypothesis that bone grease rendering was occurring throughout the Upper Paleolithic sequence at Vale Boi. As there are various issues of equifinality which makes the identification of bone grease rendering challenging, data from experimental bone grease rendering studies were utilized. The resulting analysis demonstrated limited evidence in support of a sustained use of bone grease rendering during the Upper Paleolithic sequence. However, evidence suggested that alternate bone processing activities and discard behaviours may have been occurring at the site. This suggests that the dietary behaviours of the foragers at Vale Boi were more varied than previously hypothesized.

Author Keywords: Archaeozoology, Bone Grease Rendering, Faunal Analysis, Iberia, Resource Intensification, Upper Paleolithic

Stable carbon and nitrogen isotope analyses were performed on individuals from the Virú Valley, Peru to better understand the people and society in this region of early-state development. This analysis also sheds light on the lives of individuals from a ritual killing event at Huaca Santa Clara. Bone collagen stable isotope analysis revealed that all individuals had diets predominantly based on terrestrial resources, while incremental hair segments, skin, tendon, and nails revealed that marine resources made small, non-seasonal contributions to the diet. The prioritization of farming over fishing in the Virú Valley may be indicative of the economic specialization of agricultural and marine subsistence practices by distinct communities and the tendency of state-level societies to monopolize agricultural resources. The isotopic compositions of the individuals from the Huaca Santa Clara ritual killing event showed no evidence of a controlled diet before their death and identified a likely migrant to Virú.

Author Keywords: Diet, Early Intermediate Period, Early-State Development, North Coast Peru, Ritual Killing Event, Stable Isotope Analysis

This study reconstructs the diet of pastoral populations from Bronze Age Southern Mongolia and Early Iron Age Central Mongolia using stable carbon and nitrogen isotope analysis of bone collagen from 44 individuals. Spatial and temporal differences were investigated and interpreted in combination with paleoenvironmental, archaeological, genetic and other stable isotope data. The Southern Mongolian diet is consistent with a mixed diet including C3 and C4 plants and large amounts of animal products from herd animals such as sheep/goat, horses and cattle. The δ13C values from Bronze Age Southern Mongolia are consistent with the consumption of C4 plants, most likely millet, obtained through trade with Northern China although environmental aridity might also be responsible for this pattern. The diet was relatively constant over time but spatial differences in Mongolia and Central Asia indicate variation in subsistence strategies based on environmental and cultural context. This thesis highlights the flexibility of pastoralism and its adaptability in the face of environmental and cultural changes.

Author Keywords: Bronze Age, carbon and nitrogen isotopes, Mongolia, nomadic pastoralism, paleodiet, stable isotope analysis