1. Evidence confirms an anthropic origin of Amazonian Dark Earths
- Author
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Umberto Lombardo, Manuel Arroyo-Kalin, Morgan Schmidt, Hans Huisman, Helena P. Lima, Claide de Paula Moraes, Eduardo G. Neves, Charles R. Clement, João Aires da Fonseca, Fernando Ozorio de Almeida, Carlos Francisco Brazão Vieira Alho, Christopher Bronk Ramsey, George G. Brown, Marta S. Cavallini, Marcondes Lima da Costa, Luís Cunha, Lúcia Helena C. dos Anjos, William M. Denevan, Carlos Fausto, Caroline Fernandes Caromano, Ademir Fontana, Bruna Franchetto, Bruno Glaser, Michael J. Heckenberger, Susanna Hecht, Vinicius Honorato, Klaus A. Jarosch, André Braga Junqueira, Thiago Kater, Eduardo K. Tamanaha, Thomas W. Kuyper, Johannes Lehmann, Marco Madella, S. Yoshi Maezumi, Leandro Matthews Cascon, Francis E. Mayle, Doyle McKey, Bruno Moraes, Gaspar Morcote-Ríos, Carlos A. Palheta Barbosa, Marcos Pereira Magalhães, Gabriela Prestes-Carneiro, Francisco Pugliese, Fabiano N. Pupim, Marco F. Raczka, Anne Rapp Py-Daniel, Philip Riris, Bruna Cigaran da Rocha, Leonor Rodrigues, Stéphen Rostain, Rodrigo Santana Macedo, Myrtle P. Shock, Tobias Sprafke, Filippo Stampanoni Bassi, Raoni Valle, Pablo Vidal-Torrado, Ximena S. Villagrán, Jennifer Watling, Sadie L. Weber, Wenceslau Geraldes Teixeira, Archaeology of Northwestern Europe, UMBERTO LOMBARDO, Institut de Ciència i Tecnologia Ambientals, Universitat Autònoma de Barcelona (ICTA-UAB), MANUEL ARROYO-KALIN, Institute of Archaeology, MORGAN SCHMIDT, Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, HANS HUISMAN, University of Groningen, HELENA P. LIMA, Museu Paraense Emílio Goeldi, CLAIDE DE PAULA MORAES, Universidade Federal do Oeste do Pará, EDUARDO G. NEVES, University of São Paulo, CHARLES R. CLEMENT, Instituto Nacional de Pesquisas da Amazônia, JOÃO AIRES DA FONSECA, ArqueoMaquina, FERNANDO OZORIO DE ALMEIDA, Universidade do Estado do Rio de Janeiro, CARLOS FRANCISCO BRAZÃO VIEIRA ALHO, Wageningen University & Research, CHRISTOPHER BRONK RAMSEY, University of Oxford, GEORGE GARDNER BROWN, CNPF, MARTA S. CAVALLINI, University of São Paulo, MARCONDES LIMA DA COSTA, Federal University of Pará, LUÍS CUNHA, Universidade de Coimbra, LÚCIA HELENA C. DOS ANJOS, Federal Rural University of Rio de Janeiro, WILLIAM M. DENEVAN, University of Wisconsin-Madison, CARLOS FAUSTO, Universidade Federal do Rio de Janeiro, CAROLINE FERNANDES CAROMANO, Naturalis Biodiversity Center, ADEMIR FONTANA, CNPS, BRUNA FRANCHETTO, Universidade Federal do Rio de Janeiro, BRUNO GLASER, Martin-Luther-Universität Halle-Wittenberg, MICHAEL J. HECKENBERGER, University of Florida, SUSANNA HECHT, School of Public Affairs, UCLA, VINICIUS HONORATO, Universidade Federal do Oeste do Pará, KLAUS A. JAROSCH, University of Bern, ANDRÉ BRAGA JUNQUEIRA, Universitat Autònoma de Barcelona (ICTA-UAB), THIAGO KATER, University of São Paulo, EDUARDO K. TAMANAHA, Instituto de Desenvolvimento Sustentável Mamirauá, THOMAS W. KUYPER, Wageningen University & Research, Wageningen, JOHANNES LEHMANN, Cornell University, MARCO MADELLA, Institució Catalana de Recerca i Estudis Avançats (ICREA), S. YOSHI MAEZUMI, University of Amsterdam, LEANDRO MATTHEWS CASCON, Leiden University, FRANCIS E. MAYLE, University of Reading, DOYLE MCKEY, Univ Paul-Valéry Montpellier, BRUNO MORAES, Amazon Hopes Collective, GASPAR MORCOTE-RÍOS, Universidad Nacional de Colombia, CARLOS A. PALHETA BARBOSA, Institute of National Historic and Artistic Heritage, MARCOS PEREIRA MAGALHÃES, Museu Paraense Emílio Goeldi, GABRIELA PRESTES-CARNEIRO, Universidade Federal do Oeste do Pará, FRANCISCO PUGLIESE, University of São Paulo, FABIANO N. PUPIM, Universidade Federal de São Paulo, MARCO F. RACZKA, University of Reading, ANNE RAPP PY-DANIEL, Universidade Federal do Oeste do Pará, BRUNA CIGARAN DA ROCHA, Universidade Federal do Oeste do Pará, LEONOR RODRIGUES, Agroscope, STÉPHEN ROSTAIN, French National Centre for Scientific Research, RODRIGO SANTANA MACEDO, Instituto Nacional do Semiárido, MYRTLE P. SHOCK, Universidade Federal do Oeste do Pará, TOBIAS SPRAFKE, Center of Competence for Soils, FILIPPO STAMPANONI BASSI, Museu da Amazônia, RAONI VALLE, Universidade Federal do Oeste do Pará, PABLO VIDAL-TORRADO, University of São Paulo, XIMENA S. VILLAGRÁN, University of São Paulo, JENNIFER WATLING, University of São Paulo, SADIE L. WEBER, University of São Paulo, and WENCESLAU GERALDES TEIXEIRA, CNPS.
- Subjects
Amazonian Archaeology ,Earth, Planet ,Terra preta ,General Physics and Astronomy ,Water en Voedsel ,910 Geography & travel ,Arqueologia ,General Biochemistry, Genetics and Molecular Biology ,Soil ,Ciencias ambientais ,Amazonia ,Life Science ,Anthopic Soil ,Bodembiologie ,Multidisciplinary ,Water and Food ,Amazonian Dark Earths ,Agriculture ,General Chemistry ,Soil Biology ,PE&RC ,Environmental sciences ,Microbiologia do Solo ,Solo ,Archaeology - Abstract
First described over 120 years ago in Brazil, Amazonian Dark Earths (ADEs) are expanses of dark soil that are exceptionally fertile and contain large quantities of archaeological artefacts. The elevated fertility of the dark and often deep A horizon of ADEs is widely regarded as an outcome of preColumbian human influence. Archaeological research provides clear evidence that their widespread formation in lowland South America was concentrated in the Late Holocene, an outcome of sharp human population growth that peaked towards 1000 BP.\ud In their recent paper Silva et al. argue that the higher fertility of ADEs is principally a result of fluvial deposition and, as a corollary, that pre-Columbian peoples just made use of these locales, contributing little to their enhanced nutrient status.\ud Soil formation is inherently complex and often difficult to interpret, requiring a combination of geochemical data, stratigraphy, and dating. Although Silva et al. use this combination of methods to make their case, their hypothesis, based on the analysis of a single ADE site and its immediate surroundings (Caldeirão, see maps in Silva et al.), is too limited to distinguish among the multiple possible mechanisms for ADE formation.\ud Moreover, it disregards or misreads a wealth of evidence produced by archaeologists, soil scientists, geographers and anthropologists, showing that ADEs are anthropic soils formed on land surfaces enriched by inputs associated with pre-Columbian sedentary settlement. To be accepted, and be pertinent at a regional level, Silva et al.’s hypothesis would need to be supported by solid evidence (from numerous ADE sites), which we demonstrate is lacking.
- Published
- 2022