Archaeological expansions in tropical South America during the late Holocene: assessing the role of demic diffusion
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- dc.contributor.author de Souza, Jonas Gregorio
- dc.contributor.author Alcaina-Mateos, Jonas
- dc.contributor.author Madella, Marco
- dc.date.accessioned 2021-03-18T08:42:45Z
- dc.date.available 2021-03-18T08:42:45Z
- dc.date.issued 2020
- dc.description.abstract Human expansions motivated by the spread of farming are one of the most important processes that shaped cultural geographies during the Holocene. The best known example of this phenomenon is the Neolithic expansion in Europe, but parallels in other parts of the globe have recently come into focus. Here, we examine the expansion of four archaeological cultures of widespread distribution in lowland South America, most of which originated in or around the Amazon basin and spread during the late Holocene with the practice of tropical forest agriculture. We analyze spatial gradients in radiocarbon dates of each culture through space-time regressions, allowing us to establish the most likely geographical origin, time and speed of expansion. To further assess the feasibility of demic diffusion as the process behind the archaeological expansions in question, we employ agent-based simulations with demographic parameters derived from the ethnography of tropical forest farmers. We find that, while some expansions can be realistically modeled as demographic processes, others are not easily explainable in the same manner, which is possibly due to different processes driving their dispersal (e.g. cultural diffusion) or problematic/incomplete archaeological data.
- dc.format.mimetype application/pdf
- dc.identifier.citation De Souza JG, Alcaina Mateos J, Madella M. Archaeological expansions in tropical South America during the late Holocene: assessing the role of demic diffusion. PLoS ONE. 2020 Apr 27; 15(4): e0232367. DOI: 10.1371/journal.pone.0232367
- dc.identifier.doi http://dx.doi.org/10.1371/journal.pone.0232367
- dc.identifier.issn 1932-6203
- dc.identifier.uri http://hdl.handle.net/10230/46829
- dc.language.iso eng
- dc.publisher Public Library of Science (PLoS)
- dc.relation.ispartof PLoS ONE. 2020 Apr 27; 15(4): e0232367
- dc.relation.projectID info:eu-repo/grantAgreement/EC/H2020/840163
- dc.rights © 2020 Gregorio de Souza et al. This is an open access article distributed under the terms of the Creative Commons Attribution License https://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
- dc.rights.accessRights info:eu-repo/semantics/openAccess
- dc.rights.uri https://creativecommons.org/licenses/by/4.0/
- dc.subject.keyword Archaeological dating
- dc.subject.keyword Radioactive carbon dating
- dc.subject.keyword South America
- dc.subject.keyword Genetic algorithms
- dc.subject.keyword Ceramics
- dc.subject.keyword Population density
- dc.title Archaeological expansions in tropical South America during the late Holocene: assessing the role of demic diffusion
- dc.type info:eu-repo/semantics/article
- dc.type.version info:eu-repo/semantics/publishedVersion