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@Article{SouzaSRBAMMSKNI:2018:PrEaSe,
               author = "Souza, Jonas Gregorio de and Schaan, Denise Pahl and Robinson, 
                         Mark and Barbosa, Antonia Damasceno and Arag{\~a}o, Luiz Eduardo 
                         Oliveira e Cruz de and Marimon Junior, Ben Hur and Marimon, 
                         Beatriz Schwantes and Silva, Izaias Brasil da and Khan, Salman 
                         Saeed and Nakahara, Francisco Ruji and Iriarte, Jos{\'e}",
          affiliation = "{University of Exeter} and {Universidade Federal do Par{\'a} 
                         (UFPA)} and {University of Exeter} and {Universidade Federal do 
                         Par{\'a} (UFPA)} and {Instituto Nacional de Pesquisas Espaciais 
                         (INPE)} and {Universidade do Estado de Mato Grosso (UEMT)} and 
                         {Universidade do Estado de Mato Grosso (UEMT)} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)} and {University of Exeter} 
                         and {Universidade Federal do Par{\'a} (UFPA)} and {University of 
                         Exeter}",
                title = "Pre-Columbian earth-builders settled along the entire southern rim 
                         of the Amazon",
              journal = "Nature Communications",
                 year = "2018",
               volume = "9",
                pages = "e1125",
                month = "Mar.",
             abstract = "The discovery of large geometrical earthworks in interfluvial 
                         settings of southern Amazonia has challenged the idea that 
                         Pre-Columbian populations were concentrated along the major 
                         floodplains. However, a spatial gap in the archaeological record 
                         of the Amazon has limited the assessment of the territorial extent 
                         of earth-builders. Here, we report the discovery of Pre-Columbian 
                         ditched enclosures in the Tapajos headwaters. The results show 
                         that an 1800 km stretch of southern Amazonia was occupied by 
                         earth-building cultures living in fortified villages similar to 
                         Cal AD 1250-1500. We model earthwork distribution in this broad 
                         region using recorded sites, with environmental and terrain 
                         variables as predictors, estimating that earthworks will be found 
                         over similar to 400,000 km(2) of southern Amazonia. We conclude 
                         that the interfluves and minor tributaries of southern Amazonia 
                         sustained high population densities, calling for a re-evaluation 
                         of the role of this region for Pre-Columbian cultural developments 
                         and environmental impact.",
                  doi = "10.1038/s41467-018-03510-7",
                  url = "http://dx.doi.org/10.1038/s41467-018-03510-7",
                 issn = "2041-1723",
             language = "en",
           targetfile = "souza_pre.pdf",
        urlaccessdate = "24 nov. 2020"
}


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