Delayed demographic transition following the adoption of cultivated plants in the eastern La Plata Basin and Atlantic coast, South America

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• dc.contributor.author Gregorio de Souza, Jonas
• dc.contributor.author Riris, Philip
• dc.date.accessioned 2024-05-14T06:21:41Z
• dc.date.available 2024-05-14T06:21:41Z
• dc.date.issued 2024
• dc.description.abstract Understanding past population dynamics in lowland South America relative to changes in subsistence is crucial for drawing comparisons with global processes. Here, we use aggregated radiocarbon data as a palaeodemography proxy for in the eastern La Plata Basin and adjacent Atlantic coast, southeastern South America. Our results show that population dynamics in the study area are best explained by a three-phase model consisting of exponential growth ~6000-4000 cal BP, linear decrease ~4000-2000 cal BP and further exponential growth ~2000-500 cal BP. Local deviations from the regional trend show a heterogeneous landscape, with the first phase of exponential growth mainly driven by activity in the coast. Although the first adoption of domesticated plants occurs during that period, a causal relationship with population growth cannot be established, as plant cultivation may have been incorporated into the economy of already large and settled populations approaching carrying capacity. The second phase of exponential growth follows the arrival of new cultural traditions, bringing with them a more diverse package of cultivated plants and landscape management practises. Our results highlight the complexity of the relationships between population dynamics and changes in economy in South America, with a delayed transition attested in our study region.
• dc.description.sponsorship JGS is funded by a Marie Skłodowska-Curie Individual Fellowship, project 840163, European Commission Horizon 2020.
• dc.format.mimetype application/pdf
• dc.identifier.citation de Souza JG, Riris P. Delayed demographic transition following the adoption of cultivated plants in the eastern La Plata Basin and Atlantic coast, South America. J Archaeol Sci. 2024;125:105293. DOI: 10.1016/j.jas.2020.105293
• dc.identifier.doi http://dx.doi.org/10.1016/j.jas.2020.105293
• dc.identifier.issn 0305-4403
• dc.identifier.uri http://hdl.handle.net/10230/60129
• dc.language.iso eng
• dc.publisher Elsevier
• dc.relation.ispartof Journal of Archaeological Science. 2024;125:105293.
• dc.relation.isreferencedby https://doi.org/10.1016/j.jas.2020.105293
• dc.relation.projectID info:eu-repo/grantAgreement/EC/H2020/840163
• dc.rights © 2020 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
• dc.rights.accessRights info:eu-repo/semantics/openAccess
• dc.rights.uri http://creativecommons.org/licenses/by/4.0/
• dc.subject.keyword Demography
• dc.subject.keyword Radiocarbon
• dc.subject.keyword Summed probability distributions
• dc.subject.keyword Agriculture
• dc.title Delayed demographic transition following the adoption of cultivated plants in the eastern La Plata Basin and Atlantic coast, South America
• dc.type info:eu-repo/semantics/article
• dc.type.version info:eu-repo/semantics/publishedVersion