Understanding the influences of spatial patterns on N availability within the Brazilian Amazon forest
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 var...
| Autor principal: | Nardoto, G. B. |
|---|---|
| Outros Autores: | Ometto, Jean Pierre Henry Balbaud, Ehleringer, James Russell, Higuchi, Niro, Bustamante, Mercedes M.C., Martinelli, Luiz Antônio |
| Grau: | Artigo |
| Idioma: | English |
| Publicado em: |
Ecosystems
2020
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| Assuntos: | |
| Acesso em linha: |
https://repositorio.inpa.gov.br/handle/1/18510 |
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oai:repositorio:1-18510 |
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dspace |
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oai:repositorio:1-18510 Understanding the influences of spatial patterns on N availability within the Brazilian Amazon forest Nardoto, G. B. Ometto, Jean Pierre Henry Balbaud Ehleringer, James Russell Higuchi, Niro Bustamante, Mercedes M.C. Martinelli, Luiz Antônio Bioenergetics Clay Soil Concentration (composition) Functional Group Legume Lowland Environment Nutrient Availability Spatial Variation Tropical Forest Amazonia Brasil South America 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. 2020-06-15T22:02:00Z 2020-06-15T22:02:00Z 2008 Artigo https://repositorio.inpa.gov.br/handle/1/18510 10.1007/s10021-008-9189-1 en Volume 11, Número 8, Pags. 1234-1246 Restrito Ecosystems |
| institution |
Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional |
| collection |
INPA-RI |
| language |
English |
| topic |
Bioenergetics Clay Soil Concentration (composition) Functional Group Legume Lowland Environment Nutrient Availability Spatial Variation Tropical Forest Amazonia Brasil South America |
| spellingShingle |
Bioenergetics Clay Soil Concentration (composition) Functional Group Legume Lowland Environment Nutrient Availability Spatial Variation Tropical Forest Amazonia Brasil South America Nardoto, G. B. Understanding the influences of spatial patterns on N availability within the Brazilian Amazon forest |
| topic_facet |
Bioenergetics Clay Soil Concentration (composition) Functional Group Legume Lowland Environment Nutrient Availability Spatial Variation Tropical Forest Amazonia Brasil South America |
| description |
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. |
| format |
Artigo |
| author |
Nardoto, G. B. |
| author2 |
Ometto, Jean Pierre Henry Balbaud Ehleringer, James Russell Higuchi, Niro Bustamante, Mercedes M.C. Martinelli, Luiz Antônio |
| author2Str |
Ometto, Jean Pierre Henry Balbaud Ehleringer, James Russell Higuchi, Niro Bustamante, Mercedes M.C. Martinelli, Luiz Antônio |
| title |
Understanding the influences of spatial patterns on N availability within the Brazilian Amazon forest |
| title_short |
Understanding the influences of spatial patterns on N availability within the Brazilian Amazon forest |
| title_full |
Understanding the influences of spatial patterns on N availability within the Brazilian Amazon forest |
| title_fullStr |
Understanding the influences of spatial patterns on N availability within the Brazilian Amazon forest |
| title_full_unstemmed |
Understanding the influences of spatial patterns on N availability within the Brazilian Amazon forest |
| title_sort |
understanding the influences of spatial patterns on n availability within the brazilian amazon forest |
| publisher |
Ecosystems |
| publishDate |
2020 |
| url |
https://repositorio.inpa.gov.br/handle/1/18510 |
| _version_ |
1787144355692150784 |
| score |
11.755432 |