|
|
| Acesso ao texto completo restrito à biblioteca da Embrapa Amazônia Oriental. Para informações adicionais entre em contato com cpatu.biblioteca@embrapa.br. |
Registro Completo |
Biblioteca(s): |
Embrapa Amazônia Oriental. |
Data corrente: |
23/07/2018 |
Data da última atualização: |
23/07/2018 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
ALBERT, L. P.; WU, J.; PROHASKA, N.; CAMARGO, P. B. de; HUXMAN, T. E.; TRIBUZY, E. S.; IVANOV, V. Y.; OLIVEIRA, R. S.; GARCIA, S.; SMITH, M. N.; OLIVEIRA JUNIOR, R. C. de; RESTREPO-COUPE, N.; SILVA, R. da; STARK, S. C.; MARTINS, G. A.; PENHA, D. V.; SALESKA, S. R. |
Afiliação: |
Loren P. Albert, University of Arizona / Brown University; Jin Wu, University of Arizona / Brookhaven National Laboratory; Neill Prohaska, University of Arizona; Plinio Barbosa de Camargo, CENA/USP; Travis E. Huxman, University of California; Edgard S. Tribuzy, UFOPA; Valeriy Y. Ivanov, University of Michigan; Rafael S. Oliveira, UNICAMP; Sabrina Garcia, INPA; Marielle N. Smith, University of Arizona / Michigan State University; RAIMUNDO COSME DE OLIVEIRA JUNIOR, CPATU; Natalia Restrepo-Coupe, University of Technology Sydney; Rodrigo da Silva, UFOPA; Scott C. Stark, Michigan State University; Giordane A. Martins, INPA; Deliane V. Penha, UFOPA; Scott R. Saleska, University of Arizona. |
Título: |
Age-dependent leaf physiology and consequences for crown-scale carbon uptake during the dry season in an Amazon evergreen forest. |
Ano de publicação: |
2018 |
Fonte/Imprenta: |
New Phytologist, v. 219, n. 3, p. 870-884, Aug. 2018. |
DOI: |
10.1111/nph.15056 |
Idioma: |
Inglês |
Conteúdo: |
Satellite and tower-based metrics of forest-scale photosynthesis generally increase with dry season progression across central Amazônia, but the underlying mechanisms lack consensus. We conducted demographic surveys of leaf age composition, and measured the age dependence of leaf physiology in broadleaf canopy trees of abundant species at a central eastern Amazon site. Using a novel leaf-to-branch scaling approach, we used these data to independently test the much-debated hypothesis ? arising from satellite and towe-based observations ? that leaf phenology could explain the forest-scale pattern of dry season photosynthesis. Stomatal conductance and biochemical parameters of photosynthesis were higher for recently mature leaves than for old leaves. Most branches had multiple leaf age categories simultaneously present, and the number of recently mature leaves increased as the dry season progressed because old leaves were exchanged for new leaves. These findings provide the first direct field evidence that branch-scale photosynthetic capacity increases during the dry season, with a magnitude consistent with increases in ecosystem-scale photosynthetic capacity derived from flux towers. Interactions between leaf age-dependent physiology and shifting leaf age-demographic composition are sufficient to explain the dry season photosynthetic capacity pattern at this site, and should be considered in vegetation models of tropical evergreen forests. |
Thesagro: |
Desmatamento; Fenologia; Floresta Tropical; Fotossíntese; Seca. |
Thesaurus Nal: |
Amazonia; Drought; Ontogeny; Photosynthesis; Tropical forests. |
Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
Marc: |
LEADER 02699naa a2200445 a 4500 001 2093465 005 2018-07-23 008 2018 bl uuuu u00u1 u #d 024 7 $a10.1111/nph.15056$2DOI 100 1 $aALBERT, L. P. 245 $aAge-dependent leaf physiology and consequences for crown-scale carbon uptake during the dry season in an Amazon evergreen forest.$h[electronic resource] 260 $c2018 520 $aSatellite and tower-based metrics of forest-scale photosynthesis generally increase with dry season progression across central Amazônia, but the underlying mechanisms lack consensus. We conducted demographic surveys of leaf age composition, and measured the age dependence of leaf physiology in broadleaf canopy trees of abundant species at a central eastern Amazon site. Using a novel leaf-to-branch scaling approach, we used these data to independently test the much-debated hypothesis ? arising from satellite and towe-based observations ? that leaf phenology could explain the forest-scale pattern of dry season photosynthesis. Stomatal conductance and biochemical parameters of photosynthesis were higher for recently mature leaves than for old leaves. Most branches had multiple leaf age categories simultaneously present, and the number of recently mature leaves increased as the dry season progressed because old leaves were exchanged for new leaves. These findings provide the first direct field evidence that branch-scale photosynthetic capacity increases during the dry season, with a magnitude consistent with increases in ecosystem-scale photosynthetic capacity derived from flux towers. Interactions between leaf age-dependent physiology and shifting leaf age-demographic composition are sufficient to explain the dry season photosynthetic capacity pattern at this site, and should be considered in vegetation models of tropical evergreen forests. 650 $aAmazonia 650 $aDrought 650 $aOntogeny 650 $aPhotosynthesis 650 $aTropical forests 650 $aDesmatamento 650 $aFenologia 650 $aFloresta Tropical 650 $aFotossíntese 650 $aSeca 700 1 $aWU, J. 700 1 $aPROHASKA, N. 700 1 $aCAMARGO, P. B. de 700 1 $aHUXMAN, T. E. 700 1 $aTRIBUZY, E. S. 700 1 $aIVANOV, V. Y. 700 1 $aOLIVEIRA, R. S. 700 1 $aGARCIA, S. 700 1 $aSMITH, M. N. 700 1 $aOLIVEIRA JUNIOR, R. C. de 700 1 $aRESTREPO-COUPE, N. 700 1 $aSILVA, R. da 700 1 $aSTARK, S. C. 700 1 $aMARTINS, G. A. 700 1 $aPENHA, D. V. 700 1 $aSALESKA, S. R. 773 $tNew Phytologist$gv. 219, n. 3, p. 870-884, Aug. 2018.
Download
Esconder MarcMostrar Marc Completo |
Registro original: |
Embrapa Amazônia Oriental (CPATU) |
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
Registro Completo
Biblioteca(s): |
Embrapa Cerrados. |
Data corrente: |
15/09/2020 |
Data da última atualização: |
15/09/2020 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 2 |
Autoria: |
MUNIZ, D. H. de F.; SANTANA, M. L. C.; OLIVEIRA FILHO, E. C. de. |
Afiliação: |
DAPHNE HELOISA DE FREITAS MUNIZ, CPAC; Murilo Luiz e Castro Santana; EDUARDO CYRINO DE OLIVEIRA FILHO, CPAC. |
Título: |
Avaliação da qualidade da água e condições de balneabilidade no médio Rio Araguaia. |
Ano de publicação: |
2020 |
Fonte/Imprenta: |
Fronteiras: Journal of Social, Technological and Environmental Science, v. 9, n. 2, maio-ago, 2020. |
Páginas: |
p. 308-327 |
Idioma: |
Português |
Palavras-Chave: |
Recreação. |
Thesagro: |
Água Doce; Qualidade da Água; Rio. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/216030/1/DAPHNE-avaliacao-da-qualidade.pdf
|
Marc: |
LEADER 00635naa a2200193 a 4500 001 2124952 005 2020-09-15 008 2020 bl uuuu u00u1 u #d 100 1 $aMUNIZ, D. H. de F. 245 $aAvaliação da qualidade da água e condições de balneabilidade no médio Rio Araguaia.$h[electronic resource] 260 $c2020 300 $ap. 308-327 650 $aÁgua Doce 650 $aQualidade da Água 650 $aRio 653 $aRecreação 700 1 $aSANTANA, M. L. C. 700 1 $aOLIVEIRA FILHO, E. C. de 773 $tFronteiras: Journal of Social, Technological and Environmental Science$gv. 9, n. 2, maio-ago, 2020.
Download
Esconder MarcMostrar Marc Completo |
Registro original: |
Embrapa Cerrados (CPAC) |
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
Nenhum registro encontrado para a expressão de busca informada. |
|
|