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 | Acesso ao texto completo restrito à biblioteca da Embrapa Amazônia Oriental. Para informações adicionais entre em contato com cpatu.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Amazônia Oriental. |
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Data corrente: |
04/12/2023 |
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Data da última atualização: |
04/12/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
MENG, L.; CHAMBERS, J.; KOVEN, C.; PASTORELLO, G.; GIMENEZ, B.; JARDINE, K.; TANG, Y.; McDOWELL, N.; NEGRON-JUAREZ, R.; LONGO, M.; ARAUJO, A. C. de; TOMASELLA, J.; FONTES, C.; MOHAN, M.; HIGUCHI, N. |
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Afiliação: |
LIN MENG, Lawrence Berkeley National Laboratory; JEFFREY CHAMBERS, Lawrence Berkeley National Laboratory / University of California Berkeley; CHARLES KOVEN, Lawrence Berkeley National Laboratory; GILBERTO PASTORELLO, Lawrence Berkeley National Laboratory; BRUNO GIMENEZ, INPA / Smithsonian Tropical Research Institute; KOLBY JARDINE, Lawrence Berkeley National Laboratory; YAO TANG, Lawrence Berkeley National Laboratory; NATE MCDOWELL, Pacific Northwest National Laboratory; ROBINSON NEGRON-JUAREZ, Lawrence Berkeley National Laboratory; MARCOS LONGO, Lawrence Berkeley National Laboratory; ALESSANDRO CARIOCA DE ARAUJO, CPATU; JAVIER TOMASELLA, Centro Nacional de Monitoramento e Alertas de Desastres Naturais—CEMADEN; CLARISSA FONTES, University of California; MIDHUN MOHAN, Lawrence Berkeley National Laboratory / University of California Berkeley; NIRO HIGUCHI, INPA. |
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Título: |
Soil moisture thresholds explain a shift from light-limited to water-limited sap velocity in the Central Amazon during the 2015-16 El Niño drought. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
Environmental Research Letters, v. 17, n. 6, 064023, 2022. |
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DOI: |
https://doi.org/10.1088/1748-9326/ac6f6d |
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Idioma: |
Inglês |
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Conteúdo: |
Transpiration is often considered to be light- but not water-limited in humid tropical rainforests due to abundant soil water, even during the dry seasons. The record-breaking 2015?16 El Niño drought provided a unique opportunity to examine whether transpiration is constrained by water under severe lack of rainfall. We measured sap velocity, soil water content, and meteorological variables in an old-growth upland forest in the Central Amazon throughout the 2015?16 drought. We found a rapid decline in sap velocity (-38 ± 21%, mean ± SD.) and in its temporal variability (-88%) during the drought compared to the wet season. Such changes were accompanied by a marked decline in soil moisture and an increase in temperature and vapor pressure deficit. Sap velocity was largely limited by net radiation during the wet and normal dry seasons; however, it shifted to be primarily limited by soil moisture during the drought. The threshold in which sap velocity became dominated by soil moisture was at 0.33 m3 m-3 (around -150 kPa in soil matric potential), below which sap velocity dropped steeply. Our study provides evidence for a soil water threshold on transpiration in a moist tropical forest, suggesting a shift from light limitation to water limitation under future climate characterized by increased temperature and an increased frequency, intensity, duration and extent of extreme drought events. |
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Palavras-Chave: |
Ciclo da água; Soil moisture; Water cycle. |
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Thesagro: |
Evapotranspiração; Floresta Tropical; Seca; Umidade do Solo. |
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Thesaurus Nal: |
Drought; Evapotranspiration; Tropical forests. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 02623naa a2200421 a 4500
001 2159119
005 2023-12-04
008 2022 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1088/1748-9326/ac6f6d$2DOI
100 1 $aMENG, L.
245 $aSoil moisture thresholds explain a shift from light-limited to water-limited sap velocity in the Central Amazon during the 2015-16 El Niño drought.$h[electronic resource]
260 $c2022
520 $aTranspiration is often considered to be light- but not water-limited in humid tropical rainforests due to abundant soil water, even during the dry seasons. The record-breaking 2015?16 El Niño drought provided a unique opportunity to examine whether transpiration is constrained by water under severe lack of rainfall. We measured sap velocity, soil water content, and meteorological variables in an old-growth upland forest in the Central Amazon throughout the 2015?16 drought. We found a rapid decline in sap velocity (-38 ± 21%, mean ± SD.) and in its temporal variability (-88%) during the drought compared to the wet season. Such changes were accompanied by a marked decline in soil moisture and an increase in temperature and vapor pressure deficit. Sap velocity was largely limited by net radiation during the wet and normal dry seasons; however, it shifted to be primarily limited by soil moisture during the drought. The threshold in which sap velocity became dominated by soil moisture was at 0.33 m3 m-3 (around -150 kPa in soil matric potential), below which sap velocity dropped steeply. Our study provides evidence for a soil water threshold on transpiration in a moist tropical forest, suggesting a shift from light limitation to water limitation under future climate characterized by increased temperature and an increased frequency, intensity, duration and extent of extreme drought events.
650 $aDrought
650 $aEvapotranspiration
650 $aTropical forests
650 $aEvapotranspiração
650 $aFloresta Tropical
650 $aSeca
650 $aUmidade do Solo
653 $aCiclo da água
653 $aSoil moisture
653 $aWater cycle
700 1 $aCHAMBERS, J.
700 1 $aKOVEN, C.
700 1 $aPASTORELLO, G.
700 1 $aGIMENEZ, B.
700 1 $aJARDINE, K.
700 1 $aTANG, Y.
700 1 $aMcDOWELL, N.
700 1 $aNEGRON-JUAREZ, R.
700 1 $aLONGO, M.
700 1 $aARAUJO, A. C. de
700 1 $aTOMASELLA, J.
700 1 $aFONTES, C.
700 1 $aMOHAN, M.
700 1 $aHIGUCHI, N.
773 $tEnvironmental Research Letters$gv. 17, n. 6, 064023, 2022.
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Embrapa Amazônia Oriental (CPATU) |
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| Registros recuperados : 8 | |
| 1. |  | SOUZA, L. B. de; PEIXOTO, C. P.; SILVEIRA, P. S. da; LEDO, C. A. da S.; SANTOS, V. P.; SANTOS, A. P. S. G. dos. Características agronômicas e rendimento de girassol em diferentes épocas de semeadura e populações de plantas no Recôncavo da Bahia. Bioscience Journal .,Uberlandia, v. 30, supplement 1, p. 90-100, June, 2014.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 1 |
| Biblioteca(s): Embrapa Mandioca e Fruticultura. |
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| 2. | | MANZONI, G. C.; A. P. S., KUROSHIMA, K. N., SILVA, M. G. da, PACKER, A. P., SANTOS; SANTOS, A. P. S.; KUROSHIMA, K. N.; PACKER, A. P. Qualidade da água em áreas de maricultura do estado de Santa Catarina. In: CONGRESSO BRASILEIRO DE AQUICULTURA E BIOLOGIA AQUÁTICA, 10., 2023, Florianópolis. Anais eletrônicos... Florianópolis: UFSC, Aquabio, 2023.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Meio Ambiente. |
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| 3. | | SILVA, M. G. da; A. P. S., KUROSHIMA, K. N., MANZONI, G. C., GOMES, L. E., PACKER, A. P., SANTOS; SANTOS, A. P. S.; KUROSHIMA, K. N.; MANZONI, G. C.; GOMES, L. E.; PACKER, A. P. Balanço de gases de efeito estufa em áreas de malacocultura. In: CONGRESSO BRASILEIRO DE AQUICULTURA E BIOLOGIA AQUÁTICA, 10., 2023, Florianópolis. Anais eletrônicos... Florianópolis: UFSC, Aquabio, 2023.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Meio Ambiente. |
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| 4. | | SANTOS, A. P. S. F.; LUDKE, M. C. M. M.; LUDKE, J. V.; FRAIHA, M.; OLIVEIRA, E. L.; TORRES, T. R.; SANTOS, M. J. B.; VILELA, M. R. O.; RABELLO, C. B. V. Características de carcaça de frangos alimentados com farelo de algodão. Archivos de Zootecnia, v. 57, n. 217, p.15-24, 2008. Projeto n. 16.00.30.001.16.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: Internacional - C |
| Biblioteca(s): Embrapa Suínos e Aves. |
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| 5. | | MANZONI, G. C.; A. P. S., SILVA, M. G. da, KUROSHIMA, K. N., PACKER, A. P., SANTOS; SANTOS, A. P. S.; SILVA, M. G. da; KUROSHIMA, K. N.; PACKER, A. P. Pegada de carbono em áreas de maricultura. In: CONGRESSO BRASILEIRO DE AQUICULTURA E BIOLOGIA AQUÁTICA, 10., 2023, Florianópolis. Anais eletrônicos... Florianópolis: UFSC, Aquabio, 2023.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Meio Ambiente. |
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| 6. | | FAVERO, R.; MIZUBUTI, I. Y.; GOMES, R. da C.; RIBEIRO, E. L. A.; PEREIRA, E. S.; PRADO-CALIXTO, O. P. P.; MASSARO JÚNIOR, F. L.; SANTOS, A. P. S. Relationships between residual feed intake and feedlot performance, profitability, and carcass traits in Brahman cattle. Arquivo Brasileiro Medicina Veterinária Zootecnia, v. 70, n. 2, p .525-534, 2018| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
| Biblioteca(s): Embrapa Gado de Corte. |
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| 7. | | FAVERO, F.; GOMES, R. da C.; VIEIRA, T. C.; SANTANA, M. H. de A.; SANTOS, A. P. S.; CROZARA, A. S.; RIBEIRO, E. L. de A.; MIZUBUTI, Y. I. Relationships between residual feed intake and feedlot profitability, growth performance and carcass traits in Brahman cattle. In: ANNUAL MEETING BRAZILIAN SOCIETY OF ANIMAL SCIENCE, 50., 2013, Campinas. The integration of Knowledge in animal production - abstracts. Campinas: SBZ, 2013 1 CD ROM| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Gado de Corte. |
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| 8. | | FAVERO, R.; GOMES, R. da C.; VIEIRA, T. C.; SANTANA, M. H. de A.; SANTOS, A. P. S.; CROZARA, A. S.; RIBEIRO, E. L. de A.; MIZUBUTI, I. Y. Relationships of feedlot residual feed intake with the performance and carcass traits during the previous growing phase in pasture. In: ANNUAL MEETING BRAZILIAN SOCIETY OF ANIMAL SCIENCE, 50., 2013, Campinas. The integration of Knowledge in animal production - abstracts. Campinas: SBZ, 2013 1 CD ROM| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Gado de Corte. |
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| Registros recuperados : 8 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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