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Biblioteca(s): |
Embrapa Trigo. |
Data corrente: |
10/01/2010 |
Data da última atualização: |
10/01/2010 |
Autoria: |
PUGH, G. W.; JOHANN, H.; DICKSON, J. G. |
Título: |
Relation of the semipermeable membranes of the wheat kernel to infection by Gibberella saubinetii. |
Ano de publicação: |
1932 |
Fonte/Imprenta: |
Journal of Agricultural Research, Washington, v. 45, n. 10, p. 609-626, 1932. |
Idioma: |
Inglês |
Categoria do assunto: |
-- |
Marc: |
LEADER 00438naa a2200133 a 4500 001 1831102 005 2010-01-10 008 1932 bl --- 0-- u #d 100 1 $aPUGH, G. W. 245 $aRelation of the semipermeable membranes of the wheat kernel to infection by Gibberella saubinetii. 260 $c1932 700 1 $aJOHANN, H. 700 1 $aDICKSON, J. G. 773 $tJournal of Agricultural Research, Washington$gv. 45, n. 10, p. 609-626, 1932.
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Embrapa Trigo (CNPT) |
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Registro Completo
Biblioteca(s): |
Embrapa Amazônia Oriental. |
Data corrente: |
23/11/2011 |
Data da última atualização: |
11/11/2022 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 2 |
Autoria: |
DAVIDSON, E.; LEFEBVRE, P. A.; BRANDO, P. M.; RAY, D. M.; TRUMBORE, S. E.; SOLORZANO, L. A.; FERREIRA, J. N.; BUSTAMANTE, M. M. da C.; NEPSTAD, D. C. |
Afiliação: |
Eric A. Davidson, Woods Hole Research Center; Paul A. Lefebvre, Woods Hole Research Center; Paulo M. Brando, IPAM; David Ray, Tall Timbers Research Station; Susan E. Trumbore, University of California; Luis A. Solorzano, The Gordon and Betty Moore Foundation; JOICE NUNES FERREIRA, CPATU; Mercedes M. da C. Bustamante, UNB; Daniel C. Nepstad, The Woods Hole Research Center. |
Título: |
Carbon inputs and water uptake in deep soils of an Eastern Amazon forest. |
Ano de publicação: |
2011 |
Fonte/Imprenta: |
Forest Science, v. 57, n. 1, p. 51-58, Feb. 2011. |
Idioma: |
Inglês |
Conteúdo: |
Rooting depth affects soil profiles of water uptake and carbon inputs. Here we explore the importance of deep roots in a mature tropical forest of eastern Amazonia, where a throughfall exclusion experiment was conducted to test the resilience of the forest to experimentally induced drought. We hypothesized that soil water depletion occurred below the depth previously measured by sensors in 11-m-deep soil pits and that only a small root biomass is necessary to affect water uptake and the isotopic signature of soil CO2. A noninvasive electrical profiling method demonstrated greater depletion of soil water in the 11?18 m depth increment in the exclusion plot compared with the control plot by the end of the 3rd year of the experiment. A fine root biomass of only 0.1 g/cm3 measured at 3?6 m was sufficient for soil water drawdown and for imparting an isotopic signature of modern soil 14CO2 in both plots. A soil 13CO2 profile indicated drought stress in the exclusion plot. Fine root inputs of organic C to deep soils are small with respect to the carbon dynamics of the forest, but the deep rooting habit clearly affects the ecosystem water balance and profiles of soil CO2. FOR. SCI. 57(1):51?58. |
Palavras-Chave: |
Co2. |
Thesagro: |
Água; Matéria Orgânica; Solo. |
Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
Marc: |
LEADER 01928naa a2200265 a 4500 001 1906991 005 2022-11-11 008 2011 bl uuuu u00u1 u #d 100 1 $aDAVIDSON, E. 245 $aCarbon inputs and water uptake in deep soils of an Eastern Amazon forest.$h[electronic resource] 260 $c2011 520 $aRooting depth affects soil profiles of water uptake and carbon inputs. Here we explore the importance of deep roots in a mature tropical forest of eastern Amazonia, where a throughfall exclusion experiment was conducted to test the resilience of the forest to experimentally induced drought. We hypothesized that soil water depletion occurred below the depth previously measured by sensors in 11-m-deep soil pits and that only a small root biomass is necessary to affect water uptake and the isotopic signature of soil CO2. A noninvasive electrical profiling method demonstrated greater depletion of soil water in the 11?18 m depth increment in the exclusion plot compared with the control plot by the end of the 3rd year of the experiment. A fine root biomass of only 0.1 g/cm3 measured at 3?6 m was sufficient for soil water drawdown and for imparting an isotopic signature of modern soil 14CO2 in both plots. A soil 13CO2 profile indicated drought stress in the exclusion plot. Fine root inputs of organic C to deep soils are small with respect to the carbon dynamics of the forest, but the deep rooting habit clearly affects the ecosystem water balance and profiles of soil CO2. FOR. SCI. 57(1):51?58. 650 $aÁgua 650 $aMatéria Orgânica 650 $aSolo 653 $aCo2 700 1 $aLEFEBVRE, P. A. 700 1 $aBRANDO, P. M. 700 1 $aRAY, D. M. 700 1 $aTRUMBORE, S. E. 700 1 $aSOLORZANO, L. A. 700 1 $aFERREIRA, J. N. 700 1 $aBUSTAMANTE, M. M. da C. 700 1 $aNEPSTAD, D. C. 773 $tForest Science$gv. 57, n. 1, p. 51-58, Feb. 2011.
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