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Registro Completo |
Biblioteca(s): |
Embrapa Solos. |
Data corrente: |
16/09/2021 |
Data da última atualização: |
16/09/2021 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
CALEGARI, M. R.; MADELLA, M.; VIDAL-TORRADO, P.; PESSENDA, L. C. R.; MARQUES, F. A. |
Afiliação: |
MARCIA R. CALEGARI, UNIOESTE; MARCO MADELLA, Spanish National Research Council; PABLO VIDAL-TORRADO, ESALQ; LUIZ CARLOS R. PESSENDA, CENA; FLAVIO ADRIANO MARQUES, CNPS. |
Título: |
Combining phytoliths and delta13C matter in Holocene palaeoenvironmental studies of tropical soils: an example of an Oxisol in Brazil. |
Ano de publicação: |
2013 |
Fonte/Imprenta: |
Quaternary International, v. 287, p. 47-55, Feb. 2013. |
DOI: |
https://doi.org/10.1016/j.quaint.2011.11.012 |
Idioma: |
Inglês |
Conteúdo: |
Many plants deposit the soluble silica absorbed from the soil as monosilicic acid (H4SiO4) in and between their cells, generating bodies of opal silica (SiO2·nH2O) called phytoliths. Although phytoliths are susceptible to dissolution under extreme pH conditions, they generally do remain in the soil for long periods of time and can help in the reconstruction of past vegetation and climates. In the present study, phytolith analysis was used to reconstruct the palaeoenvironmental conditions that contributed to the pedogenetic processes, the deposition of organic matter and its stabilization in a very thick (>1 m) umbric epipedon of a Humic Hapludox profile from Minas Gerais State (Brazil). The results from the phytolith assemblages were also compared to the fractions and isotopic data of soil carbon of the same profile. The result from studying these two palaeoenvironmental proxies together has shown that the environment under which the umbric epipedon was formed was a mixture of vegetation with predominance of C3 plants in mesothermic conditions and with little variation in humidity since Middle Holocene. |
Palavras-Chave: |
Fitólitos. |
Thesaurus Nal: |
Forests; Isotopes; Phytoliths. |
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
Marc: |
LEADER 01857naa a2200229 a 4500 001 2134499 005 2021-09-16 008 2013 bl uuuu u00u1 u #d 024 7 $ahttps://doi.org/10.1016/j.quaint.2011.11.012$2DOI 100 1 $aCALEGARI, M. R. 245 $aCombining phytoliths and delta13C matter in Holocene palaeoenvironmental studies of tropical soils$ban example of an Oxisol in Brazil.$h[electronic resource] 260 $c2013 520 $aMany plants deposit the soluble silica absorbed from the soil as monosilicic acid (H4SiO4) in and between their cells, generating bodies of opal silica (SiO2·nH2O) called phytoliths. Although phytoliths are susceptible to dissolution under extreme pH conditions, they generally do remain in the soil for long periods of time and can help in the reconstruction of past vegetation and climates. In the present study, phytolith analysis was used to reconstruct the palaeoenvironmental conditions that contributed to the pedogenetic processes, the deposition of organic matter and its stabilization in a very thick (>1 m) umbric epipedon of a Humic Hapludox profile from Minas Gerais State (Brazil). The results from the phytolith assemblages were also compared to the fractions and isotopic data of soil carbon of the same profile. The result from studying these two palaeoenvironmental proxies together has shown that the environment under which the umbric epipedon was formed was a mixture of vegetation with predominance of C3 plants in mesothermic conditions and with little variation in humidity since Middle Holocene. 650 $aForests 650 $aIsotopes 650 $aPhytoliths 653 $aFitólitos 700 1 $aMADELLA, M. 700 1 $aVIDAL-TORRADO, P. 700 1 $aPESSENDA, L. C. R. 700 1 $aMARQUES, F. A. 773 $tQuaternary International$gv. 287, p. 47-55, Feb. 2013.
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| Acesso ao texto completo restrito à biblioteca da Embrapa Cerrados. Para informações adicionais entre em contato com cpac.biblioteca@embrapa.br. |
Registro Completo
Biblioteca(s): |
Embrapa Cerrados. |
Data corrente: |
14/12/2015 |
Data da última atualização: |
14/12/2015 |
Tipo da produção científica: |
Resumo em Anais de Congresso |
Autoria: |
PACHÊCO, B. S.; SOUSA, A. C. da S. A. de; SOUSA, S. R. de; AQUINO, F. de G.; ALBUQUERQUE, L. B. de. |
Afiliação: |
FABIANA DE GOIS AQUINO, CPAC; LIDIAMAR BARBOSA DE ALBUQUERQUE, CPAC. |
Título: |
Estaquia de tococa formicaria mart. e Miconia chamissois naud. em área de restauração ecológica. |
Ano de publicação: |
2015 |
Fonte/Imprenta: |
In: CONGRESO IBEROAMERICANO Y DEL CARIBE DE RESTAURACIÓN ECOLÓGICA, 4., 2015, Buenos Aires. Resúmenes... Buenos Aires: Siacre, 2015. |
Páginas: |
p. 152 |
Idioma: |
Português |
Palavras-Chave: |
Estacas. |
Thesagro: |
Cerrado; Propagação Vegetativa. |
Categoria do assunto: |
-- |
Marc: |
LEADER 00699naa a2200205 a 4500 001 2031607 005 2015-12-14 008 2015 bl uuuu u00u1 u #d 100 1 $aPACHÊCO, B. S. 245 $aEstaquia de tococa formicaria mart. e Miconia chamissois naud. em área de restauração ecológica. 260 $c2015 300 $ap. 152 650 $aCerrado 650 $aPropagação Vegetativa 653 $aEstacas 700 1 $aSOUSA, A. C. da S. A. de 700 1 $aSOUSA, S. R. de 700 1 $aAQUINO, F. de G. 700 1 $aALBUQUERQUE, L. B. de 773 $tIn: CONGRESO IBEROAMERICANO Y DEL CARIBE DE RESTAURACIÓN ECOLÓGICA, 4., 2015, Buenos Aires. Resúmenes... Buenos Aires: Siacre, 2015.
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