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Registro Completo |
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Biblioteca(s): |
Embrapa Agrobiologia; Embrapa Pantanal. |
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Data corrente: |
27/06/1995 |
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Data da última atualização: |
27/06/1995 |
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Autoria: |
VORONEY, R. P.; PAUL, E. A. |
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Título: |
Determination of Kc and Kn in situ for calibration of the chloroform fumigation-incubation method. |
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Ano de publicação: |
1984 |
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Fonte/Imprenta: |
Soil Biol. Biochem., v.16, n.1, p.9-14, 1984. |
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Idioma: |
Inglês
Português |
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Conteúdo: |
14C-labelled glucose and 15N-labelled KNO3 were added to soil and the microbial biomass during 42 days incubation was estimated using the chloroform fumigation-incubation method (CFIM). By day 1, most of the glucose (1577 ug Cg-1 soil) was metabolized and 110 ug NO-3Ng-1 soil were immobilized. In situ values for the proportions of biomass C (Kc) mineralized during the 10days after CHCl3 fumigation were determined on the basis that the immobilized labelled C and N remaining in the soil at this time were present as living microbial cells and their associated metabolites. The tarcer data indicated that biomass C could be calculated by applying a Kc value of 0.41 to the CO2-C evolved from the fumigated sample whithout subtraction of an unfumigated "control". Biomass N was estimated from the net NH+4-N accumulation during the fumigation-incubation. The problem of reimmobilization of NH+4-N where organisms of wide C:N ratio occur was overcome by adjusting the value of Kn according to the ratio of CO2-C evolved: net NH+4-N accumulated during the fumigation-incubation (Cf:Nf). A Cf:Nf ratio of 6:1 resulted in a Kn of 0.30 whereas a ratio of 13:1 indicated a Kn of 0.20. |
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Palavras-Chave: |
BIOMASSA MICROBIANA; Control; Controle; Microorganism; Microorganismo. |
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Thesagro: |
Biomassa; Carbono; Método; Nitrogênio; Solo. |
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Thesaurus Nal: |
biomass; soil. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01888naa a2200277 a 4500
001 1610744
005 1995-06-27
008 1984 bl --- 0-- u #d
100 1 $aVORONEY, R. P.
245 $aDetermination of Kc and Kn in situ for calibration of the chloroform fumigation-incubation method.
260 $c1984
520 $a14C-labelled glucose and 15N-labelled KNO3 were added to soil and the microbial biomass during 42 days incubation was estimated using the chloroform fumigation-incubation method (CFIM). By day 1, most of the glucose (1577 ug Cg-1 soil) was metabolized and 110 ug NO-3Ng-1 soil were immobilized. In situ values for the proportions of biomass C (Kc) mineralized during the 10days after CHCl3 fumigation were determined on the basis that the immobilized labelled C and N remaining in the soil at this time were present as living microbial cells and their associated metabolites. The tarcer data indicated that biomass C could be calculated by applying a Kc value of 0.41 to the CO2-C evolved from the fumigated sample whithout subtraction of an unfumigated "control". Biomass N was estimated from the net NH+4-N accumulation during the fumigation-incubation. The problem of reimmobilization of NH+4-N where organisms of wide C:N ratio occur was overcome by adjusting the value of Kn according to the ratio of CO2-C evolved: net NH+4-N accumulated during the fumigation-incubation (Cf:Nf). A Cf:Nf ratio of 6:1 resulted in a Kn of 0.30 whereas a ratio of 13:1 indicated a Kn of 0.20.
650 $abiomass
650 $asoil
650 $aBiomassa
650 $aCarbono
650 $aMétodo
650 $aNitrogênio
650 $aSolo
653 $aBIOMASSA MICROBIANA
653 $aControl
653 $aControle
653 $aMicroorganism
653 $aMicroorganismo
700 1 $aPAUL, E. A.
773 $tSoil Biol. Biochem.$gv.16, n.1, p.9-14, 1984.
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Registro original: |
Embrapa Agrobiologia (CNPAB) |
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| Registros recuperados : 4 | |
| 2. |  | LAVELLE, P.; BIGNELL, D. E.; AUSTEN, M. C.; BROWN, V. K.; BEHAN-PELLETIER, V.; GAREY, J. R.; GILLER, P. S.; HAWKINS, S. J.; BROWN, G. G.; ST. JOHN, M.; HUNT, H. W.; PAUL, E. A. Connecting soil and sediment biodiversity: the role of scale and implications for management. In: WALL, D. H. (Ed.). Sustaining biodiversity and ecosystem services in soil and sediments. Washington: Island Press, 2004. p. 193-224. (SCOPE, 64).| Biblioteca(s): Embrapa Soja. |
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| 3. | | PUTTEN, W. H. van der; ANDERSON, J. M.; BARDGETT, R. D.; BEHAN-PELLETIER, V.; BIGNELL, D. E.; BROWN, G. G.; BROWN, V. K.; BRUSSAARD, L.; HUNT, H. W.; INESON, P.; JONES, T. H.; LAVELLE, P.; PAUL, E. A.; ST. JOHN, M.; WARDLE, D. A.; WOJTOWICZ, T.; WALL, D. H. The sustainable delivery of goods and services provided by soil biota. In: WALL, D. H. (Ed.). Sustaining biodiversity and ecosystem services in soil and sediments. Washington: Island Press, 2004. p. 15-43. (SCOPE, 64).| Biblioteca(s): Embrapa Soja. |
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| 4. | | WARDLE, D. A.; BROWN, V. K.; BEHAN-PELLETIER, V.; ST. JOHN, M.; WOJTOWICZ, T.; BARDGETT, R. D.; BROWN, G. G.; INESON, P.; LAVELLE, P.; PUTTEN, W. H. van der; ANDERSON, J. M.; BRUSSAARD, L.; HUNT, H. W.; PAUL, E. A.; WALL, D. H. Vulnerability to global change of ecosystem goods and services driven by soil biota. In: WALL, D. H. (Ed.). Sustaining biodiversity and ecosystem services in soil and sediments. Washington: Island Press, 2004. p. 101-135. (SCOPE, 64).| Biblioteca(s): Embrapa Soja. |
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| Registros recuperados : 4 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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