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Registro Completo |
Biblioteca(s): |
Embrapa Instrumentação. |
Data corrente: |
10/03/2023 |
Data da última atualização: |
10/03/2023 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
SANTOS, S. R. dos; SCHELLEKENS, J.; BUURMAN, P.; CORNELIS, J-T.; VANCAMPENHOUT, K.; SILVA, W. T. L. da; CAMARGO, P. B. de; VIDAL-TORRADO, P. |
Afiliação: |
WILSON TADEU LOPES DA SILVA, CNPDIA. |
Título: |
Selective sorption and desorption of DOM in Podzol horizons - DOC and aluminium contents of leachates from a column experiment. |
Ano de publicação: |
2023 |
Fonte/Imprenta: |
Science of the Total Environment, v. 872. 162234, 2023. |
Páginas: |
1 - 10 |
ISSN: |
0048-9697 |
DOI: |
http://dx.doi.org/10.1016/j.scitotenv.2023.162234 |
Idioma: |
Inglês |
Conteúdo: |
Complexation of dissolved organic matter (DOM) with cations and minerals contributes to the stabilization of carbon in soils, and can enable the transport of metals in the environment. Hence, a proper understanding of mechanisms that control DOM binding properties in the soil is important for major environmental challenges, such as climate change and stream pollution. However, the role of DOM source in those mechanisms remains understudied. Here, we consider poorly drained tropical Podzols as a model environment to isolate effects of aluminium and DOM on sorption and desorption processes in podzolisation. We collected E- and Bh-horizons from a Brazilian coastal Podzol under tropical rainforest to conduct a column experiment, and percolated the columns with DOM collected from a stream (Stream), peat water (Peat), litter (Litter) and charred litter (Char). To quantify sorption and desorption from the columns, leachates were analysed for DOC content, aluminium content, pH, and the amount of fulvic acid relative to humic acid. The results showed large differences in DOC retention between DOM-types, which were consistent over all columns. Retention of DOC in the column varied between 25 % and 92 % for DOM-type Stream, between 33 % and 63 % for DOM-type Peat, between 22 % and 47 % for DOM-type Litter, and between 8 % and 49 % for DOM-type Char. Similarly, desorption from columns with B-horizon material highly differed between DOM-types. Percolation with DOM-types Stream and Peat caused a release of native DOC from B columns that was higher than in those percolated with water only. On the other hand, percolation of B columns with DOM-types Litter and Char caused a net DOC retention. These differences reflect that certain DOM-types hindered desorption, while other DOM-types caused active desorption. The large differences in sorption/desorption between DOM-types implies that changes in environmental conditions may highly influence the fate of soil carbon in Podzols MenosComplexation of dissolved organic matter (DOM) with cations and minerals contributes to the stabilization of carbon in soils, and can enable the transport of metals in the environment. Hence, a proper understanding of mechanisms that control DOM binding properties in the soil is important for major environmental challenges, such as climate change and stream pollution. However, the role of DOM source in those mechanisms remains understudied. Here, we consider poorly drained tropical Podzols as a model environment to isolate effects of aluminium and DOM on sorption and desorption processes in podzolisation. We collected E- and Bh-horizons from a Brazilian coastal Podzol under tropical rainforest to conduct a column experiment, and percolated the columns with DOM collected from a stream (Stream), peat water (Peat), litter (Litter) and charred litter (Char). To quantify sorption and desorption from the columns, leachates were analysed for DOC content, aluminium content, pH, and the amount of fulvic acid relative to humic acid. The results showed large differences in DOC retention between DOM-types, which were consistent over all columns. Retention of DOC in the column varied between 25 % and 92 % for DOM-type Stream, between 33 % and 63 % for DOM-type Peat, between 22 % and 47 % for DOM-type Litter, and between 8 % and 49 % for DOM-type Char. Similarly, desorption from columns with B-horizon material highly differed between DOM-types. Percolation with DOM-types Stream and Peat c... Mostrar Tudo |
Palavras-Chave: |
Complexation; Podzol B-horizon; Soil carbon. |
Categoria do assunto: |
-- |
Marc: |
LEADER 02861naa a2200277 a 4500 001 2152250 005 2023-03-10 008 2023 bl uuuu u00u1 u #d 022 $a0048-9697 024 7 $ahttp://dx.doi.org/10.1016/j.scitotenv.2023.162234$2DOI 100 1 $aSANTOS, S. R. dos 245 $aSelective sorption and desorption of DOM in Podzol horizons - DOC and aluminium contents of leachates from a column experiment.$h[electronic resource] 260 $c2023 300 $a1 - 10 520 $aComplexation of dissolved organic matter (DOM) with cations and minerals contributes to the stabilization of carbon in soils, and can enable the transport of metals in the environment. Hence, a proper understanding of mechanisms that control DOM binding properties in the soil is important for major environmental challenges, such as climate change and stream pollution. However, the role of DOM source in those mechanisms remains understudied. Here, we consider poorly drained tropical Podzols as a model environment to isolate effects of aluminium and DOM on sorption and desorption processes in podzolisation. We collected E- and Bh-horizons from a Brazilian coastal Podzol under tropical rainforest to conduct a column experiment, and percolated the columns with DOM collected from a stream (Stream), peat water (Peat), litter (Litter) and charred litter (Char). To quantify sorption and desorption from the columns, leachates were analysed for DOC content, aluminium content, pH, and the amount of fulvic acid relative to humic acid. The results showed large differences in DOC retention between DOM-types, which were consistent over all columns. Retention of DOC in the column varied between 25 % and 92 % for DOM-type Stream, between 33 % and 63 % for DOM-type Peat, between 22 % and 47 % for DOM-type Litter, and between 8 % and 49 % for DOM-type Char. Similarly, desorption from columns with B-horizon material highly differed between DOM-types. Percolation with DOM-types Stream and Peat caused a release of native DOC from B columns that was higher than in those percolated with water only. On the other hand, percolation of B columns with DOM-types Litter and Char caused a net DOC retention. These differences reflect that certain DOM-types hindered desorption, while other DOM-types caused active desorption. The large differences in sorption/desorption between DOM-types implies that changes in environmental conditions may highly influence the fate of soil carbon in Podzols 653 $aComplexation 653 $aPodzol B-horizon 653 $aSoil carbon 700 1 $aSCHELLEKENS, J. 700 1 $aBUURMAN, P. 700 1 $aCORNELIS, J-T. 700 1 $aVANCAMPENHOUT, K. 700 1 $aSILVA, W. T. L. da 700 1 $aCAMARGO, P. B. de 700 1 $aVIDAL-TORRADO, P. 773 $tScience of the Total Environment$gv. 872. 162234, 2023.
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Embrapa Instrumentação (CNPDIA) |
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| Acesso ao texto completo restrito à biblioteca da Embrapa Suínos e Aves. Para informações adicionais entre em contato com cnpsa.biblioteca@embrapa.br. |
Registro Completo
Biblioteca(s): |
Embrapa Suínos e Aves. |
Data corrente: |
04/01/2008 |
Data da última atualização: |
11/03/2008 |
Tipo da produção científica: |
Artigo em Anais de Congresso / Nota Técnica |
Circulação/Nível: |
-- - -- |
Autoria: |
DICK, W.; SIMON, N. L.; VIANCELLI, A.; RITTERBUSCH, G. A.; MORÉS, N.; CIACCI-ZANELLA, J. R. |
Afiliação: |
Willian Dick, Universidade do Estado de Santa Catarina; Neide Lisiane Simon, Embrapa Suínos e Aves; Aline Viancelli, Universidade do Contestado; Giseli Aparecida Ritterbusch, Universidade de Passo Fundo; Nelson Mores, Embrapa Suínos e Aves; Janice Reis Ciacci-Zanella, Embrapa Suínos e Aves. |
Título: |
Diagnóstico da infecção por circovirus suíno tipo 2 (PCV2) e parvovírus suíno (PPV) em material proveniente de porcas com patologias reprodutivas. |
Ano de publicação: |
2007 |
Fonte/Imprenta: |
In: CONGRESSO BRASILEIRO DE VETERINÁRIOS ESPECIALISTAS EM SUÍNOS, 13., 2007, Florianópolis. Anais... Concórdia: Embrapa Suínos e Aves, 2007. |
Descrição Física: |
1 CD-ROM. |
Idioma: |
Português |
Notas: |
Projeto n. 10.06.21.032-01 |
Palavras-Chave: |
Circovírus suíno tipo2; Doenças reprodutivas; PPV; Suínos. |
Categoria do assunto: |
-- |
Marc: |
LEADER 00850naa a2200241 a 4500 001 1436318 005 2008-03-11 008 2007 bl uuuu u00u1 u #d 100 1 $aDICK, W. 245 $aDiagnóstico da infecção por circovirus suíno tipo 2 (PCV2) e parvovírus suíno (PPV) em material proveniente de porcas com patologias reprodutivas. 260 $c2007 300 $c1 CD-ROM. 500 $aProjeto n. 10.06.21.032-01 653 $aCircovírus suíno tipo2 653 $aDoenças reprodutivas 653 $aPPV 653 $aSuínos 700 1 $aSIMON, N. L. 700 1 $aVIANCELLI, A. 700 1 $aRITTERBUSCH, G. A. 700 1 $aMORÉS, N. 700 1 $aCIACCI-ZANELLA, J. R. 773 $tIn: CONGRESSO BRASILEIRO DE VETERINÁRIOS ESPECIALISTAS EM SUÍNOS, 13., 2007, Florianópolis. Anais... Concórdia: Embrapa Suínos e Aves, 2007.
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