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Campo DC | Valor | Idioma |
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dc.contributor.author | Chambers, Jeffrey Quintin | - |
dc.contributor.author | Higuchi, Niro | - |
dc.contributor.author | Schimel, Joshua P. | - |
dc.contributor.author | Ferreira, Leandro Valle | - |
dc.contributor.author | Melack, John M. | - |
dc.date.accessioned | 2020-06-15T22:06:03Z | - |
dc.date.available | 2020-06-15T22:06:03Z | - |
dc.date.issued | 2000 | - |
dc.identifier.uri | https://repositorio.inpa.gov.br/handle/1/19176 | - |
dc.description.abstract | Decomposition rate constants were measured for boles of 155 large dead trees (>10 cm diameter) in central Amazon forests. Mortality data from 21 ha of permanent inventory plots, monitored for 10-15 years, were used to select dead trees for sampling. Measured rate constants varied by over 1.5 orders of magnitude (0.015-0.67 year-1), averaging 0.19 year-1 with predicted error of 0.026 year. Wood density and bole diameter were significantly and inversely correlated with rate constants. A tree of average biomass was predicted to decompose at 0.17 year-1. Based on mortality data, an average of 7.0 trees ha-1 year-1 died producing 3.6 Mg ha-1 year-1 of coarse litter (>10 cm: diameter). Mean coarse litter standing-stocks were predicted to be 21 Mg ha-1, with a mean residence time of 5.9 years, and a maximum mean carbon flux to the atmosphere of 1.8 Mg C ha-1 year-1. Total litter is estimated to be partitioned into 16% fine wood, 30% coarse wood, and 54% non-woody litter (e.g., leaves, fruits, flowers). Decomposition rate constants for coarse litter were compiled from 20 globally distributed studies. Rates were highly correlated with mean annual temperature, giving a respiration quotient (Q10) of 2.4 (10°C-1). | en |
dc.language.iso | en | pt_BR |
dc.relation.ispartof | Volume 122, Número 3, Pags. 380-388 | pt_BR |
dc.rights | Restrito | * |
dc.subject | Carbon Cycle | en |
dc.subject | Carbon Flux | en |
dc.subject | Decomposition | en |
dc.subject | Tree | en |
dc.subject | Tropical Forest | en |
dc.subject | Amazonia | en |
dc.subject | South America | en |
dc.title | Decomposition and carbon cycling of dead trees in tropical forests of the central Amazon | en |
dc.type | Artigo | pt_BR |
dc.identifier.doi | 10.1007/s004420050044 | - |
dc.publisher.journal | Oecologia | pt_BR |
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