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Campo DC | Valor | Idioma |
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dc.contributor.author | Nardoto, G. B. | - |
dc.contributor.author | Ometto, Jean Pierre Henry Balbaud | - |
dc.contributor.author | Ehleringer, James Russell | - |
dc.contributor.author | Higuchi, Niro | - |
dc.contributor.author | Bustamante, Mercedes M.C. | - |
dc.contributor.author | Martinelli, Luiz Antônio | - |
dc.date.accessioned | 2020-06-15T22:02:00Z | - |
dc.date.available | 2020-06-15T22:02:00Z | - |
dc.date.issued | 2008 | - |
dc.identifier.uri | https://repositorio.inpa.gov.br/handle/1/18510 | - |
dc.description.abstract | Nitrogen variations at different spatial scales and integrated across functional groups were addressed for lowland tropical forests in the Brazilian Amazon as follows: (1) how does N availability vary across the region over different spatial scales (regional × landscape scale); (2) how are these variations in N availability integrated across plant functional groups (legume × non-legume trees). Leaf N, P, and Ca concentrations as well the leaf N isotope ratios (δ15N) from a large set of legume and non-legume tree species were measured. Legumes had higher foliar N/Ca ratios than non-legumes, consistent with the high energetic costs in plant growth associated with higher foliar P/Ca ratios found in legumes than in non-legumes. At the regional level, foliar δ15N decreased with increasing rainfall. At the landscape level, N availability was higher in the forests on clayey soils on the plateau than in forests on sandier soils. The isotope as well as the non-isotope data relationships here documented, explain to a large extent the variation in δ15N signatures across gradients of rainfall and soil. Although at the regional level, the precipitation regime is a major determinant of differences in N availability, at the landscape level, under the same precipitation regime, soil type seems to be a major factor influencing the availability of N in the Brazilian Amazon forest. © 2008 Springer Science+Business Media, LLC. | en |
dc.language.iso | en | pt_BR |
dc.relation.ispartof | Volume 11, Número 8, Pags. 1234-1246 | pt_BR |
dc.rights | Restrito | * |
dc.subject | Bioenergetics | en |
dc.subject | Clay Soil | en |
dc.subject | Concentration (composition) | en |
dc.subject | Functional Group | en |
dc.subject | Legume | en |
dc.subject | Lowland Environment | en |
dc.subject | Nutrient Availability | en |
dc.subject | Spatial Variation | en |
dc.subject | Tropical Forest | en |
dc.subject | Amazonia | en |
dc.subject | South America | en |
dc.title | Understanding the influences of spatial patterns on N availability within the Brazilian Amazon forest | en |
dc.type | Artigo | pt_BR |
dc.identifier.doi | 10.1007/s10021-008-9189-1 | - |
dc.publisher.journal | Ecosystems | pt_BR |
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