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Registro Completo |
Biblioteca(s): |
Embrapa Amazônia Ocidental. |
Data corrente: |
04/01/2021 |
Data da última atualização: |
17/09/2021 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
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. |
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. |
Título: |
A new hypothesis for the origin of Amazonian Dark Earths. |
Ano de publicação: |
2021 |
Fonte/Imprenta: |
Nature Communications, v. 12, Art. 127, 2021. |
DOI: |
https://doi.org/10.1038/s41467-020-20184-2 |
Idioma: |
Inglês |
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 |
Palavras-Chave: |
Amazonian Dark Earths; Terra Preta de Índio. |
Thesagro: |
Solo. |
Categoria do assunto: |
-- |
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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Registro Completo
Biblioteca(s): |
Embrapa Arroz e Feijão. |
Data corrente: |
17/12/2022 |
Data da última atualização: |
17/12/2022 |
Tipo da produção científica: |
Resumo em Anais de Congresso |
Autoria: |
VIRGÍLIO, M. L. de S.; BOAVENTURA, H. A.; QUEIRÓS, L. A.; TRIPODE, B. M. D.; SILVA, J. F. A. e; QUINTELA, E. D. |
Afiliação: |
MARIA LETÍCIA DE SIQUEIRA VIRGÍLIO; HELOIZA A. BOAVENTURA, UNIVERSIDADE FEDERAL DE GOIÁS; LIDIANE A. QUEIRÓS; BRUNA MENDES DINIZ TRIPODE, CNPA; JOSE FRANCISCO ARRUDA E SILVA, CNPAF; ELIANE DIAS QUINTELA, CNPAF. |
Título: |
Componentes da dieta artificial de Anthonomus grandis (Coleoptera: Curculionidae) afetam a viabilidade dos conídios de Metarhizium anisopliae (Hypocreales: Clavicipitaceae)? |
Ano de publicação: |
2022 |
Fonte/Imprenta: |
In: CONGRESSO BRASILEIRO DE ENTOMOLOGIA, 28., 2022, Fortaleza. Anais... Fortaleza: SEB, 2022. |
Páginas: |
p. 363. |
Idioma: |
Português |
Conteúdo: |
Estudos tem demonstrado que Metarhizium anisopliae (Hypocreales: Clavicipitaceae) é altamente virulento a Anthonomus grandis (Coleoptera: Curculionidae) quando os adultos se alimentam de botões florais, mas quando se alimentam de dieta artificial a mortalidade dos adultos pelo fungo reduz significativamente. Desta forma, o objetivo deste trabalho foi determinar se componentes da dieta artificial de A. grandis podem afetar a germinação de M. anisopliae. |
Thesagro: |
Anthonomus Grandis; Bicudo; Conídio; Metarhizium Anisopliae. |
Categoria do assunto: |
O Insetos e Entomologia |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1149888/1/CBE-2002-p363.pdf
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Marc: |
LEADER 01273nam a2200229 a 4500 001 2149888 005 2022-12-17 008 2022 bl uuuu u00u1 u #d 100 1 $aVIRGÍLIO, M. L. de S. 245 $aComponentes da dieta artificial de Anthonomus grandis (Coleoptera$bCurculionidae) afetam a viabilidade dos conídios de Metarhizium anisopliae (Hypocreales: Clavicipitaceae)?$h[electronic resource] 260 $aIn: CONGRESSO BRASILEIRO DE ENTOMOLOGIA, 28., 2022, Fortaleza. Anais... Fortaleza: SEB$c2022 300 $ap. 363. 520 $aEstudos tem demonstrado que Metarhizium anisopliae (Hypocreales: Clavicipitaceae) é altamente virulento a Anthonomus grandis (Coleoptera: Curculionidae) quando os adultos se alimentam de botões florais, mas quando se alimentam de dieta artificial a mortalidade dos adultos pelo fungo reduz significativamente. Desta forma, o objetivo deste trabalho foi determinar se componentes da dieta artificial de A. grandis podem afetar a germinação de M. anisopliae. 650 $aAnthonomus Grandis 650 $aBicudo 650 $aConídio 650 $aMetarhizium Anisopliae 700 1 $aBOAVENTURA, H. A. 700 1 $aQUEIRÓS, L. A. 700 1 $aTRIPODE, B. M. D. 700 1 $aSILVA, J. F. A. e 700 1 $aQUINTELA, E. D.
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