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Registro Completo |
Biblioteca(s): |
Embrapa Amazônia Oriental. |
Data corrente: |
17/11/2020 |
Data da última atualização: |
11/01/2021 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
ROWLAND, L.; COSTA, A. C. L. da; OLIVEIRA, R. S.; BITTENCOURT, P. R. L.; GILES, A. L.; COUGHLIN, I.; COSTA, P. de B.; BARTHOLOMEW, D.; DOMINGUES, T. F.; MIATTO, R. C.; FERREIRA, L. V.; VASCONCELOS, S. S.; S. JUNIOR, J. A.; OLIVEIRA, A. A. R.; MENCUCCINI, M.; MEIR, P. |
Afiliação: |
Lucy Rowland, University of Exeter; Antonio C. L. da Costa, UFPA / MPEG; Rafael S. Oliveira, UNICAMP; Paulo R. L. Bittencourt, UNICAMP / University of Exeter; André L. Giles, UNICAMP; Ingrid Coughlin, USP / Australian National University; Patricia de Britto Costa, UNICAMP; David Bartholomew, University of Exeter; Tomas F. Domingues, USP; Raquel C. Miatto, USP; Leandro V. Ferreira, MPEG; STEEL SILVA VASCONCELOS, CPATU; Joao A. S. Junior, UFPA; Alex A. R. Oliveira, Australian National University; Maurizio Mencuccini, CREAF, Campus UAB / ICREA; Patrick Meir, USP / University of Edinburgh. |
Título: |
The response of carbon assimilation and storage to long-term drought in tropical trees is dependent on light availability. |
Ano de publicação: |
2021 |
Fonte/Imprenta: |
Functional Ecology, v. 35, n. 1, p. 43-53, Jan. 2021. |
DOI: |
https://doi.org/10.1111/1365-2435.13689 |
Idioma: |
Inglês |
Notas: |
Publicado online em 29 set. 2020. |
Conteúdo: |
Whether tropical trees acclimate to long‐term drought stress remains unclear. This uncertainty is amplified if drought stress is accompanied by changes in other drivers such as the increases in canopy light exposure that might be induced by tree mortality or other disturbances. Photosynthetic capacity, leaf respiration, non‐structural carbohydrate (NSC) storage and stomatal conductance were measured on 162 trees at the world's longest running (15 years) tropical forest drought experiment. We test whether surviving trees have altered strategies for carbon storage and carbon use in the drier and elevated light conditions present following drought‐related tree mortality. Relative to control trees, the surviving trees experiencing the drought treatment showed functional responses including: (a) moderately reduced photosynthetic capacity; (b) increased total leaf NSC; and (c) a switch from starch to soluble sugars as the main store of branch NSC. This contrasts with earlier findings at this experiment of no change in photosynthetic capacity or NSC storage. The changes detected here only occurred in the subset of drought‐stressed trees with canopies exposed to high radiation and were absent in trees with less‐exposed canopies and also in the community average. In contrast to previous results acquired through less intensive species sampling from this experiment, we also observe no species‐average drought‐induced change in leaf respiration. Our results suggest that long‐term responses to drought stress are strongly influenced by a tree's full‐canopy light environment and therefore that disturbance‐induced changes in stand density and dynamics are likely to substantially impact tropical forest responses to climate change. We also demonstrate that, while challenging, intensive sampling is essential in tropical forests to avoid sampling biases caused by limited taxonomic coverage. MenosWhether tropical trees acclimate to long‐term drought stress remains unclear. This uncertainty is amplified if drought stress is accompanied by changes in other drivers such as the increases in canopy light exposure that might be induced by tree mortality or other disturbances. Photosynthetic capacity, leaf respiration, non‐structural carbohydrate (NSC) storage and stomatal conductance were measured on 162 trees at the world's longest running (15 years) tropical forest drought experiment. We test whether surviving trees have altered strategies for carbon storage and carbon use in the drier and elevated light conditions present following drought‐related tree mortality. Relative to control trees, the surviving trees experiencing the drought treatment showed functional responses including: (a) moderately reduced photosynthetic capacity; (b) increased total leaf NSC; and (c) a switch from starch to soluble sugars as the main store of branch NSC. This contrasts with earlier findings at this experiment of no change in photosynthetic capacity or NSC storage. The changes detected here only occurred in the subset of drought‐stressed trees with canopies exposed to high radiation and were absent in trees with less‐exposed canopies and also in the community average. In contrast to previous results acquired through less intensive species sampling from this experiment, we also observe no species‐average drought‐induced change in leaf respiration. ... Mostrar Tudo |
Thesagro: |
Carboidrato; Floresta Tropical; Fotossíntese; Respiração; Seca. |
Thesaurus Nal: |
Carbohydrates; Drought; Light; Photosynthesis; Stomatal conductance; Tropical forests. |
Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/220103/1/1365-2435.13689-2021.pdf
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Marc: |
LEADER 03293naa a2200457 a 4500 001 2126671 005 2021-01-11 008 2021 bl uuuu u00u1 u #d 024 7 $ahttps://doi.org/10.1111/1365-2435.13689$2DOI 100 1 $aROWLAND, L. 245 $aThe response of carbon assimilation and storage to long-term drought in tropical trees is dependent on light availability.$h[electronic resource] 260 $c2021 500 $aPublicado online em 29 set. 2020. 520 $aWhether tropical trees acclimate to long‐term drought stress remains unclear. This uncertainty is amplified if drought stress is accompanied by changes in other drivers such as the increases in canopy light exposure that might be induced by tree mortality or other disturbances. Photosynthetic capacity, leaf respiration, non‐structural carbohydrate (NSC) storage and stomatal conductance were measured on 162 trees at the world's longest running (15 years) tropical forest drought experiment. We test whether surviving trees have altered strategies for carbon storage and carbon use in the drier and elevated light conditions present following drought‐related tree mortality. Relative to control trees, the surviving trees experiencing the drought treatment showed functional responses including: (a) moderately reduced photosynthetic capacity; (b) increased total leaf NSC; and (c) a switch from starch to soluble sugars as the main store of branch NSC. This contrasts with earlier findings at this experiment of no change in photosynthetic capacity or NSC storage. The changes detected here only occurred in the subset of drought‐stressed trees with canopies exposed to high radiation and were absent in trees with less‐exposed canopies and also in the community average. In contrast to previous results acquired through less intensive species sampling from this experiment, we also observe no species‐average drought‐induced change in leaf respiration. Our results suggest that long‐term responses to drought stress are strongly influenced by a tree's full‐canopy light environment and therefore that disturbance‐induced changes in stand density and dynamics are likely to substantially impact tropical forest responses to climate change. We also demonstrate that, while challenging, intensive sampling is essential in tropical forests to avoid sampling biases caused by limited taxonomic coverage. 650 $aCarbohydrates 650 $aDrought 650 $aLight 650 $aPhotosynthesis 650 $aStomatal conductance 650 $aTropical forests 650 $aCarboidrato 650 $aFloresta Tropical 650 $aFotossíntese 650 $aRespiração 650 $aSeca 700 1 $aCOSTA, A. C. L. da 700 1 $aOLIVEIRA, R. S. 700 1 $aBITTENCOURT, P. R. L. 700 1 $aGILES, A. L. 700 1 $aCOUGHLIN, I. 700 1 $aCOSTA, P. de B. 700 1 $aBARTHOLOMEW, D. 700 1 $aDOMINGUES, T. F. 700 1 $aMIATTO, R. C. 700 1 $aFERREIRA, L. V. 700 1 $aVASCONCELOS, S. S. 700 1 $aS. JUNIOR, J. A. 700 1 $aOLIVEIRA, A. A. R. 700 1 $aMENCUCCINI, M. 700 1 $aMEIR, P. 773 $tFunctional Ecology$gv. 35, n. 1, p. 43-53, Jan. 2021.
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Embrapa Amazônia Oriental (CPATU) |
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Registro Completo
Biblioteca(s): |
Embrapa Soja. |
Data corrente: |
02/10/2006 |
Data da última atualização: |
13/11/2023 |
Tipo da produção científica: |
Resumo em Anais de Congresso |
Autoria: |
MARQUES-MARÇAL, V. V.; MENOLLI JUNIOR, N.; FRANÇA, E. J. G.; LIBONI, A. P.; ALMEIDA, A. M. R.; ANDRADE-NÓBREGA, G. M.; PACCOLA-MEIRELLES, L. O. |
Título: |
Atividade inibitória de leveduras sobre fungos patogênicos à soja. |
Ano de publicação: |
2006 |
Fonte/Imprenta: |
Fitopatologia Brasileira, Brasília, DF, v. 31, p. S334, ago. 2006. Suplemento. |
Idioma: |
Português |
Notas: |
Edição dos Resumos do XXXIX Congresso Brasileiro de Fitopatologia, Salvador, BA, ago. 2006. |
Thesagro: |
Soja. |
Thesaurus NAL: |
Soybeans. |
Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
Marc: |
LEADER 00742nam a2200205 a 4500 001 1469640 005 2023-11-13 008 2006 bl uuuu u00u1 u #d 100 1 $aMARQUES-MARÇAL, V. V. 245 $aAtividade inibitória de leveduras sobre fungos patogênicos à soja.$h[electronic resource] 260 $aFitopatologia Brasileira, Brasília, DF, v. 31, p. S334, ago. 2006. Suplemento.$c2006 500 $aEdição dos Resumos do XXXIX Congresso Brasileiro de Fitopatologia, Salvador, BA, ago. 2006. 650 $aSoybeans 650 $aSoja 700 1 $aMENOLLI JUNIOR, N. 700 1 $aFRANÇA, E. J. G. 700 1 $aLIBONI, A. P. 700 1 $aALMEIDA, A. M. R. 700 1 $aANDRADE-NÓBREGA, G. M. 700 1 $aPACCOLA-MEIRELLES, L. O.
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