Papers by Alice Toso
Scientific Reports, 2021
The emergence of plant-based economies have dominated evolutionary models of Middle and Late Holo... more The emergence of plant-based economies have dominated evolutionary models of Middle and Late Holocene pre-Columbian societies in South America. Comparatively, the use of aquatic resources and the circumstances for intensifying their exploitation have received little attention. Here we reviewed the stable carbon and nitrogen isotope composition of 390 human individuals from Middle and Late Holocene coastal sambaquis, a long-lasting shell mound culture that flourished for nearly 7000 years along the Atlantic Forest coast of Brazil. Using a newly generated faunal isotopic baseline and Bayesian Isotope Mixing Models we quantified the relative contribution of marine resources to the diet of some of these groups. Through the analysis of more than 400 radiocarbon dates we show that fishing sustained large and resilient populations during most of the Late Holocene. A sharp decline was observed in the frequency of sambaqui sites and radiocarbon dates from ca. 2200 years ago, possibly reflecting the dissolution of several nucleated groups into smaller social units, coinciding with substantial changes in coastal environments. The spread of ceramics from ca. 1200 years ago is marked by innovation and intensification of fishing practices, in a context of increasing social and ecological instability in the Late Holocene.
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Journal of Archaeological Science, 2021
A constant and intense debate in South American archaeology stands on the origin and patterns of ... more A constant and intense debate in South American archaeology stands on the origin and patterns of food production of ancient populations and the correlation of both aspects with demographic growth and social complexity. Some studies associated population growth with the shift from foraging to agricultural practices in hotspots on the continent. This association has been confronted by a number of studies performed in recent years that reconstructed dietary patterns for several tropical and subtropical areas of eastern South America. However, there is still a lack of information on the diet for Late Holocene populations in the wetlands of the Pampa Biome. In order to access the paleodiet of earthen-mound builders from southern Patos Lagoon (Brazil), this study combined bulk collagen stable carbon and nitrogen isotopes analysis of faunal and human remains with Bayesian Stable Isotope Mixing Models. The paleodiet of 20 human and one dog remains from six sites was reconstructed. The Bayesian mixing model on collagen δ13C and δ15N values revealed variable subsistence strategies with high consumption of marine/estuarine protein for some individuals. Other individuals’ diets relied on terrestrial/freshwater resources as protein sources. In southeastern South America, such patterns reinforce the resource-rich aquatic environment as a facilitator for the endurance of mixed economies. In addition, our results suggest that the Patos Lagoon surroundings was a “hub of interactivity” characterised by a remarkable intra-site dietary variability.
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American Journal of Physical Anthropology, 2021
Objectives: During the Middle Ages, Portugal witnessed unprecedented socioeconomic and religious ... more Objectives: During the Middle Ages, Portugal witnessed unprecedented socioeconomic and religious changes under transitioning religious political rule. The implications of changing ruling powers for urban food systems and individual diets in medieval Portugal is poorly understood. This study aimed to elucidate the dietary impact of the Islamic and Christian conquests. Materials and Methods: Radiocarbon dating, peptide mass fingerprinting (ZooMS) and stable isotope analysis (δ 13 C, δ 15 N) of animal (n = 59) and human skeletal remains (n = 205) from Muslim and Christian burials were used to characterize the diet of a large historical sample from Portugal. A Bayesian stable isotope mixing model (BSIMM) was used to estimate the contribution of marine protein to human diet. Results: Early medieval (8-12th century), preconquest urban Muslim populations had mean (±1SD) values of À18.8 ± 0.4 ‰ for δ 13 C 10.4 ± 1 ‰ for δ 15 N, indicating a predominantly terrestrial diet, while late medieval (12-14th century) postconquest Muslim and Christian populations showed a greater reliance on marine resources with mean (±1SD) values of À17.9 ± 1.3‰ for δ 13 C and 11.1 ± 1.1‰ for δ 15 N. BSIMM
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Archaeological and Anthropological Sciences, 2019
This paper presents the first bioarchaeological study of Islamic diet and lifeways in medieval Po... more This paper presents the first bioarchaeological study of Islamic diet and lifeways in medieval Portugal. Stable isotopes of δ 13 C and δ 15 N and osteological and paleopathological analyses are combined to explore the diet and health status of 27 humans buried within São Jorge Castle, Lisbon (eleventh to twelfth century), interpreted as a high status population. Human isotopic data are considered alongside an animal baseline comprised of 30 specimens sampled from nearby Praça da Figueira, including the main domesticates and fish. Isotopic data indicate an age-and sex-related difference in diet among the population, suggesting a difference in food access between females and children compared to males. Palaeopathological analysis indicates a low prevalence of non-specific stress indicators such as Harris lines (HL), linear enamel hypoplasia (LEH) and cribra orbitalia (CO) in this population in comparison to other medieval populations. LEH is only present in adults. These results suggest the presence of socio-cultural patterning relating to the organisation of the Islamic family, where women and men occupied different places in the household and society. This paper demonstrates the utility of a combined osteological and isotopic approach to understand the lifeways of Islamic populations in Medieval Iberia, as well as illuminates the lifeways of understudied segments of the population.
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Setúbal Arqueológica, 2018
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Posters by Alice Toso
Actas De Las V Jornadas De Jovenes En Investigacion Arqueologica Santiago De Compostela Mayo De 2012 2013 Isbn 978 84 939295 8 9 Pags 380 382, 2013
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Conference Presentations by Alice Toso
A necrópole do Largo da Igreja (Sarilhos Grandes, Montijo): evidências bioarqueológicas de contat... more A necrópole do Largo da Igreja (Sarilhos Grandes, Montijo): evidências bioarqueológicas de contato entre Portugal e o Novo Mundo
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Books by Alice Toso
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Papers by Alice Toso
Posters by Alice Toso
Conference Presentations by Alice Toso
Books by Alice Toso