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Registro Completo |
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Biblioteca(s): |
Embrapa Pantanal. |
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Data corrente: |
30/06/1995 |
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Data da última atualização: |
05/04/2017 |
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Autoria: |
SAN JOSE, J. J.; BERRADE, F.; RAMIREZ, J. |
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Título: |
Seasonal changes of growth mortality and disappearance of belowground root biomass in the Trachypogon savanna grass. |
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Ano de publicação: |
1982 |
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Fonte/Imprenta: |
Acta Oecologia, Oecologia Plantarum, v.3, n.4, p.347-352, 1982. |
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Idioma: |
Inglês |
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Conteúdo: |
An estimation of belowground growth and turnover in a Trachypogon savanna grass was compared with those of two other plots at different times during the dry season. In these estimations we took into account the disappearance rate of dead matter and the data on funcxtional and non-functional dru matter. Thus, changes were recorded in the dry weight of excised roots during their decomposition in the soil and the ratio of functional to non-functional roots was assessed with the 2, 3, 5-Triphenyltetrazolium chloride reduction techniques. Results indicate that fire produce a significant decrease of 8 and 28% in the belowground growth of savannas burnt at the beginning (194.8 vs. 179.0 g m-2yr-1) and end (194.8 vs. 141.2 g m-2yr-1) of the dry season. The mean turnover values suggest that the root system of a savanna grass may survive on the average for one year. Therefore there is a relative equilibrium in the bellowground system, where annual growth is equal to the amount of annual decomposed dead matter in the soil. |
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Palavras-Chave: |
Fire; Grassland; Savana. |
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Thesagro: |
Biomassa; Fogo; Pastagem; Queimada. |
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Thesaurus Nal: |
biomass; burning; Trachypogon. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01730naa a2200265 a 4500
001 1784732
005 2017-04-05
008 1982 bl --- 0-- u #d
100 1 $aSAN JOSE, J. J.
245 $aSeasonal changes of growth mortality and disappearance of belowground root biomass in the Trachypogon savanna grass.
260 $c1982
520 $aAn estimation of belowground growth and turnover in a Trachypogon savanna grass was compared with those of two other plots at different times during the dry season. In these estimations we took into account the disappearance rate of dead matter and the data on funcxtional and non-functional dru matter. Thus, changes were recorded in the dry weight of excised roots during their decomposition in the soil and the ratio of functional to non-functional roots was assessed with the 2, 3, 5-Triphenyltetrazolium chloride reduction techniques. Results indicate that fire produce a significant decrease of 8 and 28% in the belowground growth of savannas burnt at the beginning (194.8 vs. 179.0 g m-2yr-1) and end (194.8 vs. 141.2 g m-2yr-1) of the dry season. The mean turnover values suggest that the root system of a savanna grass may survive on the average for one year. Therefore there is a relative equilibrium in the bellowground system, where annual growth is equal to the amount of annual decomposed dead matter in the soil.
650 $abiomass
650 $aburning
650 $aTrachypogon
650 $aBiomassa
650 $aFogo
650 $aPastagem
650 $aQueimada
653 $aFire
653 $aGrassland
653 $aSavana
700 1 $aBERRADE, F.
700 1 $aRAMIREZ, J.
773 $tActa Oecologia, Oecologia Plantarum$gv.3, n.4, p.347-352, 1982.
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Registro original: |
Embrapa Pantanal (CPAP) |
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| 9. | | SÃO JOSÉ, J. F. B. de; BAYER, C.; BENDER, A. C.; MARTINS, J. G.; DICK, D. P.; ARAÚJO, E. F. de; RODRIGUES, R. de A. R.; CARNIEL, E.; SILVA, D. U. da. Impact of Eucalyptus harvest residues management on soil carbon storage and greenhouse gas emission (GHG) in sandy soil in southern Brazil. In: WORLD CONGRESS OF SOIL SCIENCE, 21., 2018, Rio de Janeiro. Soil science: beyond food and fuel: proceedings... Viçosa, MG: SBCS, 2019. v. 2, p. 363-364. WCSS 2018.| Tipo: Resumo em Anais de Congresso |
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| Registros recuperados : 10 | |
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