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Registro Completo |
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Biblioteca(s): |
Embrapa Amazônia Ocidental. |
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Data corrente: |
04/01/2021 |
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Data da última atualização: |
17/09/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
SILVA, L. C. R.; CORRÊA, R. S.; WRIGHT, J. L.; BOMFIM, B.; HENDRICKS, L.; GAVIN, D. G.; MUNIZ, A. W.; MARTINS, G. C.; MOTTA, A. C. V.; BARBOSA, J. Z.; MELO, V. de F.; YOUNG, S. D.; BROADLEY, M. R.; SANTOS, R. V. |
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Afiliação: |
Lucas C. R. Silva, University of Oregon; Rodrigo Studart Corrêa; Jamie L. Wright; Barbara Bomfim; Lauren Hendricks; Daniel G. Gavin; ALEKSANDER WESTPHAL MUNIZ, CPAA; GILVAN COIMBRA MARTINS, CPAA; Antônio Carlos Vargas Motta; Julierme Zimmer Barbosa; Vander de Freitas Melo; Scott D. Young; Martin R. Broadley; Roberto Ventura Santos. |
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Título: |
A new hypothesis for the origin of Amazonian Dark Earths. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
Nature Communications, v. 12, Art. 127, 2021. |
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DOI: |
https://doi.org/10.1038/s41467-020-20184-2 |
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Idioma: |
Inglês |
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Conteúdo: |
Amazonian Dark Earths (ADEs) are unusually fertile soils characterised by elevated concentrations of microscopic charcoal particles, which confer their distinctive colouration. Frequent occurrences of pre-Columbian artefacts at ADE sites led to their ubiquitous classification as Anthrosols (soils of anthropic origin). However, it remains unclear how indigenous peoples created areas of high fertility in one of the most nutrient-impoverished environments on Earth. Here, we report new data from a well-studied ADE site in the Brazilian Amazon, which compel us to reconsider its anthropic origin. The amounts of phosphorus and calcium - two of the least abundant macronutrients in the region - are orders of magnitude higher in ADE profiles than in the surrounding soil. The elevated levels of phosphorus and calcium, which are often interpreted as evidence of human activity at other sites, correlate spatially with trace elements that indicate exogenous mineral sources rather than in situ deposition. Stable isotope actios of neodymium, strontium, and radiocarbon activity of microcharcoal particles also indicate exogenous inputs from alluvial deposition of carbon and mineral elements to ADE profiles, beginning several thousands of years before the earliest evidence of soil management for plant cultivation in the region. Our data suggest that indigenous peoples harnessed natural processes of landscape formation, which led to the unique properties of ADEs, but were not responsible for their genesis. If corroborated elsewhere, this hypothesis would transform our understanding of human influence in Amazonia, opening new frontiers for the sustainable use of tropical landscapes going forward. MenosAmazonian Dark Earths (ADEs) are unusually fertile soils characterised by elevated concentrations of microscopic charcoal particles, which confer their distinctive colouration. Frequent occurrences of pre-Columbian artefacts at ADE sites led to their ubiquitous classification as Anthrosols (soils of anthropic origin). However, it remains unclear how indigenous peoples created areas of high fertility in one of the most nutrient-impoverished environments on Earth. Here, we report new data from a well-studied ADE site in the Brazilian Amazon, which compel us to reconsider its anthropic origin. The amounts of phosphorus and calcium - two of the least abundant macronutrients in the region - are orders of magnitude higher in ADE profiles than in the surrounding soil. The elevated levels of phosphorus and calcium, which are often interpreted as evidence of human activity at other sites, correlate spatially with trace elements that indicate exogenous mineral sources rather than in situ deposition. Stable isotope actios of neodymium, strontium, and radiocarbon activity of microcharcoal particles also indicate exogenous inputs from alluvial deposition of carbon and mineral elements to ADE profiles, beginning several thousands of years before the earliest evidence of soil management for plant cultivation in the region. Our data suggest that indigenous peoples harnessed natural processes of landscape formation, which led to the unique properties of ADEs, but were not responsible for the... Mostrar Tudo |
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Palavras-Chave: |
Amazonian Dark Earths; Terra Preta de Índio. |
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Thesagro: |
Solo. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/219845/1/s41467-020-20184-2.pdf
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Marc: |
LEADER 02607naa a2200325 a 4500
001 2128936
005 2021-09-17
008 2021 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1038/s41467-020-20184-2$2DOI
100 1 $aSILVA, L. C. R.
245 $aA new hypothesis for the origin of Amazonian Dark Earths.$h[electronic resource]
260 $c2021
520 $aAmazonian Dark Earths (ADEs) are unusually fertile soils characterised by elevated concentrations of microscopic charcoal particles, which confer their distinctive colouration. Frequent occurrences of pre-Columbian artefacts at ADE sites led to their ubiquitous classification as Anthrosols (soils of anthropic origin). However, it remains unclear how indigenous peoples created areas of high fertility in one of the most nutrient-impoverished environments on Earth. Here, we report new data from a well-studied ADE site in the Brazilian Amazon, which compel us to reconsider its anthropic origin. The amounts of phosphorus and calcium - two of the least abundant macronutrients in the region - are orders of magnitude higher in ADE profiles than in the surrounding soil. The elevated levels of phosphorus and calcium, which are often interpreted as evidence of human activity at other sites, correlate spatially with trace elements that indicate exogenous mineral sources rather than in situ deposition. Stable isotope actios of neodymium, strontium, and radiocarbon activity of microcharcoal particles also indicate exogenous inputs from alluvial deposition of carbon and mineral elements to ADE profiles, beginning several thousands of years before the earliest evidence of soil management for plant cultivation in the region. Our data suggest that indigenous peoples harnessed natural processes of landscape formation, which led to the unique properties of ADEs, but were not responsible for their genesis. If corroborated elsewhere, this hypothesis would transform our understanding of human influence in Amazonia, opening new frontiers for the sustainable use of tropical landscapes going forward.
650 $aSolo
653 $aAmazonian Dark Earths
653 $aTerra Preta de Índio
700 1 $aCORRÊA, R. S.
700 1 $aWRIGHT, J. L.
700 1 $aBOMFIM, B.
700 1 $aHENDRICKS, L.
700 1 $aGAVIN, D. G.
700 1 $aMUNIZ, A. W.
700 1 $aMARTINS, G. C.
700 1 $aMOTTA, A. C. V.
700 1 $aBARBOSA, J. Z.
700 1 $aMELO, V. de F.
700 1 $aYOUNG, S. D.
700 1 $aBROADLEY, M. R.
700 1 $aSANTOS, R. V.
773 $tNature Communications$gv. 12, Art. 127, 2021.
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Registro original: |
Embrapa Amazônia Ocidental (CPAA) |
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| Registros recuperados : 47 | |
| 15. |  | CORRÊA, R. S.; MEDEIROS, J. C.; MADARI, B. E.; CARVALHO, G. D.; COSTA, A. R. da. Distribuição dos fluxos de n2o ao longo do dia em latossolo vermelho no cerrado. In: ENCONTRO BRASILEIRO DE SUBSTÂNCIAS HÚMICAS, 10., 2013, Santo Antônio de Goiás. Matéria orgânica e qualidade ambiental: anais. Brasília, DF: Embrapa, 2013. p. 153-156.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Arroz e Feijão. |
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| 17. | | CORRÊA, R. S.; MADARI, B. E.; CARVALHO, M. da C. S.; CARVALHO, M. T. de M. Nitrous oxide fluxes from different nitrogen sources applied in upland rice in the cerrado goiano. In: INTERNATIONAL SYMPOSIUM ON GREENHOUSE GASES IN AGRICULTURE, 2., 2016, Campo Grande, MS. Proceedings... Brasília, DF: Embrapa, 2016. p. 104-106. (Embrapa Gado de Corte. Documentos, 216). Coordenador Roberto Giolo de Almeida. II SIGEE.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Arroz e Feijão. |
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| 18. | | CORRÊA, R. S.; MAGGIOTTO, S. R.; MEDEIROS, J. C.; MADARI, B. E. Quantificação dos fluxos de N2O pelo método do fluxo-gradiente e da câmara estática manual em iLP em Santo Antônio de Goiás, GO. In: SEMINÁRIO JOVENS TALENTOS, 8., 2014, Santo Antônio de Goiás. Coletânea dos resumos apresentados. Santo Antônio de Goiás: Embrapa Arroz e Feijão, 2014. p. 114. (Embrapa Arroz e Feijão. Documentos, 306).| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Arroz e Feijão. |
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| Registros recuperados : 47 | |
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