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| 4. |  | OLIVEIRA JUNIOR, R. C. de. A erosividade das chuvas na região de Conceição do Araguaia, PA. In: CONGRESSO LATINO AMERICANO DE CIÊNCIA DO SOLO, 13.; REUNIÃO BRASILEIRA DE BIOLOGIA DO SOLO, 1.; SIMPÓSIO BRASILEIRO SOBRE MICROBIOLOGIA DO SOLO, 4.; REUNIÃO BRASILEIRA SOBRE MICORRIZAS, 6.; REUNIÃO BRASILEIRA DE MANEJO E CONSERVAÇÃO DO SOLO E DA ÁGUA, 11., 1996, Aguas de Lindoia. Solo suelo 96. Aguas de Lindoia: SBCS/SLCS, 1996. 1 CD-ROM.| Biblioteca(s): Embrapa Amazônia Oriental. |
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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. |
Registro Completo
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Biblioteca(s): |
Embrapa Amazônia Oriental. |
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Data corrente: |
04/10/2023 |
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Data da última atualização: |
13/11/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
RESTREPO-COUPE, N.; CHRISTOFFERSEN, B. O.; LONGO, M.; ALVES, L. F.; CAMPOS, K. S.; ARAUJO, A. C. de; OLIVEIRA JUNIOR, R. C. de; PROHASKA, N.; SILVA, R. da; TAPAJOS, R.; WIEDEMANN, K. T.; WOFSY, S. C.; SALESKA, S. R. |
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Afiliação: |
NATALIA RESTREPO-COUPE, UNIVERSITY OF ARIZONA; BRADLEY O'DONNELL CHRISTOFFERSEN, UNIVERSITY OF TEXAS RIO GRANDE VALLEY; MARCOS LONGO, LAWRENCE BERKELEY NATIONAL LABORATORY; LUCIANA F. ALVES, UNIVERSITY OF CALIFORNIA LOS ANGELES; KLEBER SILVA CAMPOS, UNIVERSIDADE FEDERAL DO OESTE DO PARÁ; ALESSANDRO CARIOCA DE ARAUJO, CPATU; RAIMUNDO COSME DE OLIVEIRA JUNIOR, CPATU; NEILL PROHASKA, UNIVERSITY OF ARIZONA; RODRIGO DA SILVA, UNIVERSIDADE FEDERAL DO OESTE DO PARÁ; RAPHAEL TAPAJOS, UNIVERSIDADE FEDERAL DO OESTE DO PARÁ; KENIA T. WIEDEMANN, HARVARD UNIVERSITY; STEVEN C. WOFSY, HARVARD UNIVERSITY; SCOTT R. SALESKA, UNIVERSITY OF ARIZONA. |
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Título: |
Asymmetric response of Amazon forest water and energy fluxes to wet and dry hydrological extremes reveals onset of a local drought-induced tipping point. |
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Ano de publicação: |
2023 |
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Fonte/Imprenta: |
Global Change Biology, v. 29, n. 21, p. 6077-6092, Nov. 2023. |
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DOI: |
10.1111/gcb.16933 |
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Idioma: |
Inglês |
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Conteúdo: |
Understanding the effects of intensification of Amazon basin hydrological cycling manifest as increasingly frequent floods and droughts'on water and energy cycles of tropical forests is essential to meeting the challenge of predicting ecosystem responses to climate change, including forest 'tipping points'. Here, we investigated the impacts of hydrological extremes on forest function using 12+ years of observations (between 2001-2020) of water and energy fluxes from eddy covariance, along with associated ecological dynamics from biometry, at the Tapajós National Forest. Measurements encompass the strong 2015-2016 El Niño drought and La Niña 2008-2009 wet events. We found that the forest responded strongly to El Niño-Southern Oscillation (ENSO): Drought reduced water availability for evapotranspiration (ET) leading to large increases in sensible heat fluxes (H). Partitioning ET by an approach that assumes transpiration (T) is proportional to photosynthesis, we found that water stress-induced reductions in canopy conductance (Gs) drove T declines partly compensated by higher evaporation (E). By contrast, the abnormally wet La Niña period gave higher T and lower E, with little change in seasonal ET. Both El Niño-Southern Oscillation (ENSO) events resulted in changes in forest structure, manifested as lower wet-season leaf area index. However, only during El Niño 2015-2016, we observed a breakdown in the strong meteorological control of transpiration fluxes (via energy |
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Palavras-Chave: |
Água e sazonalidade do fluxo de energia; Ecosystem-climate interactions; ENSO; Interações ecossistema-clima; Water and energy flux seasonality. |
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Thesagro: |
Água; Floresta Tropical. |
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Thesaurus NAL: |
Amazonia; Eddy covariance; Tropical forests. |
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Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
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Marc: |
LEADER 02746naa a2200397 a 4500
001 2157088
005 2023-11-13
008 2023 bl uuuu u00u1 u #d
024 7 $a10.1111/gcb.16933$2DOI
100 1 $aRESTREPO-COUPE, N.
245 $aAsymmetric response of Amazon forest water and energy fluxes to wet and dry hydrological extremes reveals onset of a local drought-induced tipping point.$h[electronic resource]
260 $c2023
520 $aUnderstanding the effects of intensification of Amazon basin hydrological cycling manifest as increasingly frequent floods and droughts'on water and energy cycles of tropical forests is essential to meeting the challenge of predicting ecosystem responses to climate change, including forest 'tipping points'. Here, we investigated the impacts of hydrological extremes on forest function using 12+ years of observations (between 2001-2020) of water and energy fluxes from eddy covariance, along with associated ecological dynamics from biometry, at the Tapajós National Forest. Measurements encompass the strong 2015-2016 El Niño drought and La Niña 2008-2009 wet events. We found that the forest responded strongly to El Niño-Southern Oscillation (ENSO): Drought reduced water availability for evapotranspiration (ET) leading to large increases in sensible heat fluxes (H). Partitioning ET by an approach that assumes transpiration (T) is proportional to photosynthesis, we found that water stress-induced reductions in canopy conductance (Gs) drove T declines partly compensated by higher evaporation (E). By contrast, the abnormally wet La Niña period gave higher T and lower E, with little change in seasonal ET. Both El Niño-Southern Oscillation (ENSO) events resulted in changes in forest structure, manifested as lower wet-season leaf area index. However, only during El Niño 2015-2016, we observed a breakdown in the strong meteorological control of transpiration fluxes (via energy
650 $aAmazonia
650 $aEddy covariance
650 $aTropical forests
650 $aÁgua
650 $aFloresta Tropical
653 $aÁgua e sazonalidade do fluxo de energia
653 $aEcosystem-climate interactions
653 $aENSO
653 $aInterações ecossistema-clima
653 $aWater and energy flux seasonality
700 1 $aCHRISTOFFERSEN, B. O.
700 1 $aLONGO, M.
700 1 $aALVES, L. F.
700 1 $aCAMPOS, K. S.
700 1 $aARAUJO, A. C. de
700 1 $aOLIVEIRA JUNIOR, R. C. de
700 1 $aPROHASKA, N.
700 1 $aSILVA, R. da
700 1 $aTAPAJOS, R.
700 1 $aWIEDEMANN, K. T.
700 1 $aWOFSY, S. C.
700 1 $aSALESKA, S. R.
773 $tGlobal Change Biology$gv. 29, n. 21, p. 6077-6092, Nov. 2023.
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