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 | Acesso ao texto completo restrito à biblioteca da Embrapa Solos. Para informações adicionais entre em contato com cnps.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Solos. |
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Data corrente: |
16/09/2021 |
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Data da última atualização: |
16/09/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
CALEGARI, M. R.; MADELLA, M.; VIDAL-TORRADO, P.; PESSENDA, L. C. R.; MARQUES, F. A. |
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Afiliação: |
MARCIA R. CALEGARI, UNIOESTE; MARCO MADELLA, Spanish National Research Council; PABLO VIDAL-TORRADO, ESALQ; LUIZ CARLOS R. PESSENDA, CENA; FLAVIO ADRIANO MARQUES, CNPS. |
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Título: |
Combining phytoliths and delta13C matter in Holocene palaeoenvironmental studies of tropical soils: an example of an Oxisol in Brazil. |
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Ano de publicação: |
2013 |
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Fonte/Imprenta: |
Quaternary International, v. 287, p. 47-55, Feb. 2013. |
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DOI: |
https://doi.org/10.1016/j.quaint.2011.11.012 |
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Idioma: |
Inglês |
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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. |
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Palavras-Chave: |
Fitólitos. |
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Thesaurus Nal: |
Forests; Isotopes; Phytoliths. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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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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