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Registro Completo |
Biblioteca(s): |
Embrapa Amazônia Oriental. |
Data corrente: |
16/10/2018 |
Data da última atualização: |
19/05/2022 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
FONTES, C. G.; DAWSON, T. E.; JARDINE, K.; McDOWELL, N.; GIMENEZ, B. O.; ANDEREGG, L.; NEGRÓN-JUÁREZ, R.; HIGUCHI, N.; FINE, P. V. A.; ARAUJO, A. C. de; CHAMBERS, J. Q. |
Afiliação: |
Clarissa G. Fontes, University of California at Berkeley; Todd E. Dawson, University of California at Berkeley; Kolby Jardine, Lawrence Berkeley National Laboratory / INPA; Nate McDowell, Pacific Northwest National Laboratory; Bruno O. Gimenez, INPA; Leander Anderegg, University of California at Berkeley; Robinson Negrón-Juárez, Lawrence Berkeley National Laboratory; Niro Higuchi, INPA; Paul V. A. Fine, University of California at Berkeley; ALESSANDRO CARIOCA DE ARAUJO, CPATU; Jeffrey Q. Chambers, Lawrence Berkeley National Laboratory / University of California Berkeley. |
Título: |
Dry and hot: the hydraulic consequences of a climate change-type drought for Amazonian trees. |
Ano de publicação: |
2018 |
Fonte/Imprenta: |
Philosophical Transactions of the Royal Society B, v. 373, n. 1760, 2018. |
DOI: |
10.1098/rstb.2018.0209 |
Idioma: |
Inglês |
Conteúdo: |
How plants respond physiologically to leaf warming and low water availability may determine how they will perform under future climate change. In 2015?2016, an unprecedented drought occurred across Amazonia with record-breaking high temperatures and low soil moisture, offering a unique opportunity to evaluate the performances of Amazonian trees to a severe climatic event. We quantified the responses of leaf water potential, sap velocity, whole-tree hydraulic conductance (Kwt), turgor loss and xylem embolism, during and after the 2015?2016 El Niño for five canopy-tree species. Leaf/xylem safety margins (SMs), sap velocity and Kwt showed a sharp drop during warm periods. SMs were negatively correlated with vapour pressure deficit, but had no significant relationship with soil water storage. Based on our calculations of canopy stomatal and xylem resistances, the decrease in sap velocity and Kwt was due to a combination of xylem cavitation and stomatal closure. Our results suggest that warm droughts greatly amplify the degree of trees' physiological stress and can lead to mortality. Given the extreme nature of the 2015?2016 El Niño and that temperatures are predicted to increase, this work can serve as a case study of the possible impact climate warming can have on tropical trees. This article is part of a discussion meeting issue "The impact of the 2015/2016 El Niño on the terrestrial tropical carbon cycle: patterns, mechanisms and implications". |
Thesagro: |
Aquecimento; Floresta Tropical; Mudança Climática; Seca. |
Thesaurus Nal: |
El Nino. |
Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
Marc: |
LEADER 02377naa a2200313 a 4500 001 2097462 005 2022-05-19 008 2018 bl uuuu u00u1 u #d 024 7 $a10.1098/rstb.2018.0209$2DOI 100 1 $aFONTES, C. G. 245 $aDry and hot$bthe hydraulic consequences of a climate change-type drought for Amazonian trees.$h[electronic resource] 260 $c2018 520 $aHow plants respond physiologically to leaf warming and low water availability may determine how they will perform under future climate change. In 2015?2016, an unprecedented drought occurred across Amazonia with record-breaking high temperatures and low soil moisture, offering a unique opportunity to evaluate the performances of Amazonian trees to a severe climatic event. We quantified the responses of leaf water potential, sap velocity, whole-tree hydraulic conductance (Kwt), turgor loss and xylem embolism, during and after the 2015?2016 El Niño for five canopy-tree species. Leaf/xylem safety margins (SMs), sap velocity and Kwt showed a sharp drop during warm periods. SMs were negatively correlated with vapour pressure deficit, but had no significant relationship with soil water storage. Based on our calculations of canopy stomatal and xylem resistances, the decrease in sap velocity and Kwt was due to a combination of xylem cavitation and stomatal closure. Our results suggest that warm droughts greatly amplify the degree of trees' physiological stress and can lead to mortality. Given the extreme nature of the 2015?2016 El Niño and that temperatures are predicted to increase, this work can serve as a case study of the possible impact climate warming can have on tropical trees. This article is part of a discussion meeting issue "The impact of the 2015/2016 El Niño on the terrestrial tropical carbon cycle: patterns, mechanisms and implications". 650 $aEl Nino 650 $aAquecimento 650 $aFloresta Tropical 650 $aMudança Climática 650 $aSeca 700 1 $aDAWSON, T. E. 700 1 $aJARDINE, K. 700 1 $aMcDOWELL, N. 700 1 $aGIMENEZ, B. O. 700 1 $aANDEREGG, L. 700 1 $aNEGRÓN-JUÁREZ, R. 700 1 $aHIGUCHI, N. 700 1 $aFINE, P. V. A. 700 1 $aARAUJO, A. C. de 700 1 $aCHAMBERS, J. Q. 773 $tPhilosophical Transactions of the Royal Society B$gv. 373, n. 1760, 2018.
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Registro original: |
Embrapa Amazônia Oriental (CPATU) |
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| Acesso ao texto completo restrito à biblioteca da Embrapa Meio Ambiente. Para informações adicionais entre em contato com cnpma.biblioteca@embrapa.br. |
Registro Completo
Biblioteca(s): |
Embrapa Meio Ambiente. |
Data corrente: |
21/01/2011 |
Data da última atualização: |
21/01/2011 |
Tipo da produção científica: |
Resumo em Anais de Congresso |
Autoria: |
CORREA, E. B.; GALVAO, J. A. H.; BETTIOL, W. |
Afiliação: |
Élida Barbosa Corrêa, FCA/UNESP; JOSE ABRAHAO HADDAD GALVAO, CNPMA; WAGNER BETTIOL, CNPMA. |
Título: |
Biological control of root rot caused by Pythium aphanidermatum and growth promotion in hydroponic cucumber with microorganisms from mangrove. |
Ano de publicação: |
2010 |
Fonte/Imprenta: |
In: IOBC/WPRS WORKING GROUP "BIOLOGICAL CONTROL OF FUNGAL AND BACTERIAL PLANT PATHOGENS", 2010, Graz, Austria. Abstracts. Climate change: challenge or threat to biocontrol? Graz: ABITEP, 2010. p. 12. |
Idioma: |
Inglês |
Thesagro: |
Controle Biológico; Doença de Planta. |
Categoria do assunto: |
-- |
Marc: |
LEADER 00679naa a2200157 a 4500 001 1873858 005 2011-01-21 008 2010 bl --- 0-- u #d 100 1 $aCORREA, E. B. 245 $aBiological control of root rot caused by Pythium aphanidermatum and growth promotion in hydroponic cucumber with microorganisms from mangrove. 260 $c2010 650 $aControle Biológico 650 $aDoença de Planta 700 1 $aGALVAO, J. A. H. 700 1 $aBETTIOL, W. 773 $tIn: IOBC/WPRS WORKING GROUP "BIOLOGICAL CONTROL OF FUNGAL AND BACTERIAL PLANT PATHOGENS", 2010, Graz, Austria. Abstracts. Climate change: challenge or threat to biocontrol? Graz: ABITEP, 2010. p. 12.
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