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 | Acesso ao texto completo restrito à biblioteca da Embrapa Pecuária Sudeste. Para informações adicionais entre em contato com cppse.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Instrumentação; Embrapa Pecuária Sudeste. |
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Data corrente: |
27/05/2024 |
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Data da última atualização: |
11/10/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
SANTOS, J. V. DOS; GORANOV, A. I.; BENTO, L. R.; OLIVEIRA, P. P. A.; PEZZOPANE, J. R. M.; BERNARDI, A. C. de C.; SÁ, I. P. DE; NOGUEIRA, A. R. de A.; MARTIN NETO, L.; HATCHER, P. G. |
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Afiliação: |
JOÃO VITOR DOS SANTOS, OLD DOMINION UNIVERSITY; ALEKSANDAR I. GORANOV, OLD DOMINION UNIVERSITY; LUCAS R. BENTO, UNIVERSITY OF SÃO PAULO; PATRICIA PERONDI ANCHAO OLIVEIRA, CPPSE; JOSE RICARDO MACEDO PEZZOPANE, CPPSE; ALBERTO CARLOS DE CAMPOS BERNARDI, CPPSE; ÍVERO P. DE SÁ; ANA RITA DE ARAUJO NOGUEIRA, CPPSE; LADISLAU MARTIN NETO, CNPDIA; PATRICK G. HATCHER, OLD DOMINION UNIVERSITY. |
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Título: |
Biogeochemistry of dissolved organic matter and inorganic solutes in soil profiles of tropical pasturelands. |
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Ano de publicação: |
2024 |
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Fonte/Imprenta: |
Soil and Tillage Research, v. 240, Aug. 2024, 106100. |
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Páginas: |
15 p. |
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DOI: |
10.1016/j.still.2024.106100 |
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Idioma: |
Inglês |
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Conteúdo: |
Tropical soils play a critical role in the global biogeochemical cycles and are essential for maintaining the Earth's carbon balance. Understanding the dynamics of dissolved organic matter (DOM) is paramount due to its implications for ecosystem functioning and nutrient cycling. This study comprehensively evaluated the origin, distribution, and composition of DOM and inorganic solutes in Brazilian tropical agricultural soils. Multiple analytical techniques were utilized to assess DOM from soil profiles (0–100 cm depth) across a spectrum of land uses, including a native Atlantic Forest, a degraded pasture, as well as intensive grazing, extensive grazing, and silvopastoral systems. Inorganic elements were quantified to assess the coupling between the organic and inorganic biogeochemical cycles. The dominance of C4 carbon in topsoil layers suggested substantial contributions of organic matter from grasses to the soil organic matter pool. However, with increased depth, C3 carbon inputs became more prominent, indicating the influence of forest vegetation that existed prior to the implementation of agricultural managements. DOM concentrations decreased with soil depth due to reduced carbon inputs, sorption to minerals, or oxidation. DOM composition did not show significant changes among different land use and managements. Lignin was identified as the primary contributor to oxidized DOM with increasing soil depth. The composition of DOM exhibited a shift from more aromatic and higher molecular weight compounds in topsoil layers to smaller, more aliphatic compounds in subsoil layers. Our key findings revealed that aliphatic compounds, particularly fatty acids, tend to accumulate in deeper soil layers. This phenomenon was consistent in pastures dominated by grasses but not in soils near treed vegetation. Overseeding (from C3 plants) did not significantly impact DOM compositions, emphasizing the persistence of C4 plants in these systems. The presence of inorganic elements in soil water extracts showed minimal impact on DOM dynamics, suggesting decoupled organic and inorganic biogeochemical cycles in tropical pasturelands. MenosTropical soils play a critical role in the global biogeochemical cycles and are essential for maintaining the Earth's carbon balance. Understanding the dynamics of dissolved organic matter (DOM) is paramount due to its implications for ecosystem functioning and nutrient cycling. This study comprehensively evaluated the origin, distribution, and composition of DOM and inorganic solutes in Brazilian tropical agricultural soils. Multiple analytical techniques were utilized to assess DOM from soil profiles (0–100 cm depth) across a spectrum of land uses, including a native Atlantic Forest, a degraded pasture, as well as intensive grazing, extensive grazing, and silvopastoral systems. Inorganic elements were quantified to assess the coupling between the organic and inorganic biogeochemical cycles. The dominance of C4 carbon in topsoil layers suggested substantial contributions of organic matter from grasses to the soil organic matter pool. However, with increased depth, C3 carbon inputs became more prominent, indicating the influence of forest vegetation that existed prior to the implementation of agricultural managements. DOM concentrations decreased with soil depth due to reduced carbon inputs, sorption to minerals, or oxidation. DOM composition did not show significant changes among different land use and managements. Lignin was identified as the primary contributor to oxidized DOM with increasing soil depth. The composition of DOM exhibited a shift from more aromatic and high... Mostrar Tudo |
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Palavras-Chave: |
ILPF; Long term field experiment. |
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Thesaurus Nal: |
Pasture management; Soil organic matter; Tropical soils. |
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Categoria do assunto: |
W Química e Física |
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Marc: |
LEADER 03102naa a2200313 a 4500
001 2164504
005 2024-10-11
008 2024 bl uuuu u00u1 u #d
024 7 $a10.1016/j.still.2024.106100$2DOI
100 1 $aSANTOS, J. V. DOS
245 $aBiogeochemistry of dissolved organic matter and inorganic solutes in soil profiles of tropical pasturelands.$h[electronic resource]
260 $c2024
300 $a15 p.
520 $aTropical soils play a critical role in the global biogeochemical cycles and are essential for maintaining the Earth's carbon balance. Understanding the dynamics of dissolved organic matter (DOM) is paramount due to its implications for ecosystem functioning and nutrient cycling. This study comprehensively evaluated the origin, distribution, and composition of DOM and inorganic solutes in Brazilian tropical agricultural soils. Multiple analytical techniques were utilized to assess DOM from soil profiles (0–100 cm depth) across a spectrum of land uses, including a native Atlantic Forest, a degraded pasture, as well as intensive grazing, extensive grazing, and silvopastoral systems. Inorganic elements were quantified to assess the coupling between the organic and inorganic biogeochemical cycles. The dominance of C4 carbon in topsoil layers suggested substantial contributions of organic matter from grasses to the soil organic matter pool. However, with increased depth, C3 carbon inputs became more prominent, indicating the influence of forest vegetation that existed prior to the implementation of agricultural managements. DOM concentrations decreased with soil depth due to reduced carbon inputs, sorption to minerals, or oxidation. DOM composition did not show significant changes among different land use and managements. Lignin was identified as the primary contributor to oxidized DOM with increasing soil depth. The composition of DOM exhibited a shift from more aromatic and higher molecular weight compounds in topsoil layers to smaller, more aliphatic compounds in subsoil layers. Our key findings revealed that aliphatic compounds, particularly fatty acids, tend to accumulate in deeper soil layers. This phenomenon was consistent in pastures dominated by grasses but not in soils near treed vegetation. Overseeding (from C3 plants) did not significantly impact DOM compositions, emphasizing the persistence of C4 plants in these systems. The presence of inorganic elements in soil water extracts showed minimal impact on DOM dynamics, suggesting decoupled organic and inorganic biogeochemical cycles in tropical pasturelands.
650 $aPasture management
650 $aSoil organic matter
650 $aTropical soils
653 $aILPF
653 $aLong term field experiment
700 1 $aGORANOV, A. I.
700 1 $aBENTO, L. R.
700 1 $aOLIVEIRA, P. P. A.
700 1 $aPEZZOPANE, J. R. M.
700 1 $aBERNARDI, A. C. de C.
700 1 $aSÁ, I. P. DE
700 1 $aNOGUEIRA, A. R. de A.
700 1 $aMARTIN NETO, L.
700 1 $aHATCHER, P. G.
773 $tSoil and Tillage Research$gv. 240, Aug. 2024, 106100.
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Registro original: |
Embrapa Pecuária Sudeste (CPPSE) |
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| Registros recuperados : 5 | |
| 2. |  | BUGLIONE-NETO, C.; MOURIÑO, J. L.; VIEIRA, F. do N.; SILVA, B. C. da; JATOBÁ, A.; SEIFFERT, W.; FRACALOSSI, D. M.; ANDREATTA, E. Métodos para determinação da digestibilidade aparente de dietas para camarão marinho suplementadas com probiótico. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 48, n. 8, p. 1021-1027, ago. 2013. Título em inglês: Methods for determining the apparent digestibility of diets for marine shrimp supplemented with probiotic.| Biblioteca(s): Embrapa Unidades Centrais. |
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| 3. | | VIEIRA, F. do N.; BUGLIONE NETO, C. C.; MOURIÑO, J. L. P.; JATOBÁ, A.; RAMIREZ, C.; MARTINS, M. L.; BARRACCO, M. A. A. M.; VINATEA, L. A. Time-related action of Lactobacillus plantarum in the bacterial microbiota of shrimp digestive tract and its action as immunostimulant. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 43, n. 6, p. 763-769, jun. 2008 Título em português: Tempo de atuação de Lactobacillus plantarum na microbiota bacteriana intestinal de camarão e sua ação como imunoestimulante.| Biblioteca(s): Embrapa Unidades Centrais. |
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| 4. | | JATOBÁ, A.; VIEIRA, F. do N.; BUGLIONE NETO, C.; SILVA, B. C.; MOURIÑO, J. L. P.; JERÔNIMO, G. T.; DOTTA, G.; MARTINS, M. L. Utilização de bactérias ácido-lácticas isoladas do trato intestinal de tilápia-do-nilo como probiótico. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 43, n. 9, p. 1201-1207, set. 2008. Título em inglês: Lactic-acid bacteria isolated from the intestinal tract of Nile tilapia utilized as probiotic.| Biblioteca(s): Embrapa Unidades Centrais. |
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| 5. | | OLIVEIRA, L. K.; BAUMGARTNER, L. A.; CARDOSO, A. J. da S.; DUARTE, P. R. K.; BLATT, T. L. D.; RIBEIRO, A. S. A.; BUGLIONE NETO, C. C.; WATANABE, A. L.; BICUDO, A. J.; HISANO, H. Parâmetros hematológicos de tilápias do Nilo cultivadas em sistema bioflocos comdiferentes frequências alimentares e proteína dietética subótima. In: INTERNATIONAL FISH CONGRESS & FISH EXPO BRASIL, 5., 2023, Foz doIguaçu. [Anais]. Foz do Iguaçu: Fundep, Unioeste, 2023. 5 p.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Meio Ambiente. |
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| Registros recuperados : 5 | |
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