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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: |
30/09/2014 |
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Data da última atualização: |
19/10/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
CHRISTOFFERSEN, B. O.; RESTREPO-COUPE, N.; ARAIN, M. A.; BAKER, I. T.; CESTARO, B. P.; CIAIS, P.; FISHER, J. B.; GALBRAITH, D.; GUAN, X.; GULDEN, L.; HURK, B. van den; ICHII, K.; IMBUZEIRO, H.; JAIN, A.; LEVINE, N.; MIGUEZ-MACHO, G.; POULTER, B.; ROBERTI, D. R.; SAKAGUCHI, K.; SAHOO, A.; SCHAEFER, K.; SHI, M.; VERBEECK, H.; YANG, Z.-L.; ARAUJO, A. C.; KRUIJT, B.; MANZI, A. O.; ROCHA, H. R. da; RANDOW, C. von; MUZA, M. N.; BORAK, J.; COSTA, M. H.; GONÇALVES, L. G. G. de; ZENG, X.; SALESKA, S. R. |
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Afiliação: |
Bradley O. Christoffersen, University of Arizona; Natalia Restrepo-Coupe, University of Arizona / University of Technology, Sydney, Australia; M Altaf Arain, McMaster University; Ian T. Baker, Colorado State University; Bruno P. Cestaro, USP; Phillippe Ciais, LSCE CEA-CNRS-UVSQ, Orme des Merisiers; Joshua B. Fisher, California Institute of Technology; David Galbraith, University of Oxford / University of Leeds; Xiaodan Guan, The University of Texas at Austin; Lindsey Gulden, The University of Texas at Austin / ExxonMobil Upstream Research Company; Bart van den Hurk, Royal Netherlands Meteorological Institute (KNMI); Kazuhito Ichii, Fukushima University; Hewlley Imbuzeiro, UFV; Atul Jain, University of Illinois at Urbana-Champaign; Naomi Levine, Harvard University; Gonzalo Miguez-Macho, Universidade de Santiago de Compostela; Ben Poulter, Swiss Federal Research Institute WSL; Debora R. Roberti, UFSM; Koichi Sakaguchi, University of Arizona; Alok Sahoo, Center for Research on Environment and Water, IGES; Kevin Schaefer, University of Colorado at Boulder; Mingjie Shi, The University of Texas at Austin; Hans Verbeeck, Ghent University; Zong-Liang Yang, The University of Texas at Austin; ALESSANDRO CARIOCA DE ARAUJO, CPATU; Bart Kruijt, Wageningen University & Research Center; Antonio O. Manzi, INPA; Humberto R. da Rocha, USP; Celso von Randow, INPE; Michel N. Muza, University of Maryland, College Park, Hydrological Sciences Laboratory, NASA Goddard Space Flight Center; Jordan Borak, INPE; Marcos H. Costa, UFV; Luis Gustavo Gonçalves de Gonçalves, University of Maryland, College Park, Hydrological Sciences Laboratory, NASA Goddard Space Flight Center / INPE; Xubin Zeng, University of Arizona; Scott R. Saleska, University of Arizona. |
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Título: |
Mechanisms of water supply and vegetation demand govern the seasonality and magnitude of evapotranspiration in Amazonia and Cerrado. |
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Ano de publicação: |
2014 |
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Fonte/Imprenta: |
Agricultural and Forest Meteorology, v. 191, p. 33-50, June 2014. |
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DOI: |
10.1016/j.agrformet.2014.02.008 |
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Idioma: |
Inglês |
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Conteúdo: |
Evapotranspiration (E) in the Amazon connects forest function and regional climate via its role in precipitation recycling However, the mechanisms regulating water supply to vegetation and its demand for water remain poorly understood, especially during periods of seasonal water deficits In this study, we address two main questions: First, how do mechanisms of water supply (indicated by rooting depth and groundwater) and vegetation water demand (indicated by stomatal conductance and intrinsic water use efficiency) control evapotranspiration (E) along broad gradients of climate and vegetation from equatorial Amazonia to Cerrado, and second, how do these inferred mechanisms of supply and demand compare to those employed by a suite of ecosystem models? We used a network of eddy covariance towers in Brazil coupled with ancillary measurements to address these questions With respect to the magnitude and seasonality of E, models have much improved in equatorial tropical forests by eliminating most dry season water limitation, diverge in performance in transitional forests where seasonal water deficits are greater, and mostly capture the observed seasonal depressions in E at Cerrado However, many models depended universally on either deep roots or groundwater to mitigate dry season water deficits, the relative importance of which we found does not vary as a simple function of climate or vegetation In addition, canopy stomatal conductance (gs) regulates dry season vegetation demand for water at all except the wettest sites even as the seasonal cycle of E follows that of net radiation In contrast, some models simulated no seasonality in gs, even while matching the observed seasonal cycle of E. We suggest that canopy dynamics mediated by leaf phenology may play a significant role in such seasonality, a process poorly represented in models Model bias in gs and E, in turn, was related to biases arising from the simulated light response (gross primary productivity, GPP) or the intrinsic water use efficiency of photosynthesis (iWUE). We identified deficiencies in models which would not otherwise be apparent based on a simple comparison of simulated and observed rates of E. While some deficiencies can be remedied by parameter tuning, in most models they highlight the need for continued process development of belowground hydrology and in particular, the biological processes of root dynamics and leaf phenology, which via their controls on E, mediate vegetation-climate feedbacks in the tropics. MenosEvapotranspiration (E) in the Amazon connects forest function and regional climate via its role in precipitation recycling However, the mechanisms regulating water supply to vegetation and its demand for water remain poorly understood, especially during periods of seasonal water deficits In this study, we address two main questions: First, how do mechanisms of water supply (indicated by rooting depth and groundwater) and vegetation water demand (indicated by stomatal conductance and intrinsic water use efficiency) control evapotranspiration (E) along broad gradients of climate and vegetation from equatorial Amazonia to Cerrado, and second, how do these inferred mechanisms of supply and demand compare to those employed by a suite of ecosystem models? We used a network of eddy covariance towers in Brazil coupled with ancillary measurements to address these questions With respect to the magnitude and seasonality of E, models have much improved in equatorial tropical forests by eliminating most dry season water limitation, diverge in performance in transitional forests where seasonal water deficits are greater, and mostly capture the observed seasonal depressions in E at Cerrado However, many models depended universally on either deep roots or groundwater to mitigate dry season water deficits, the relative importance of which we found does not vary as a simple function of climate or vegetation In addition, canopy stomatal conductance (gs) regulates dry season vegetation demand f... Mostrar Tudo |
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Thesagro: |
Água; Cerrado; Evapotranspiração; Floresta Tropical. |
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Thesaurus Nal: |
Amazonia. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
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001 1996137
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008 2014 bl uuuu u00u1 u #d
024 7 $a10.1016/j.agrformet.2014.02.008$2DOI
100 1 $aCHRISTOFFERSEN, B. O.
245 $aMechanisms of water supply and vegetation demand govern the seasonality and magnitude of evapotranspiration in Amazonia and Cerrado.$h[electronic resource]
260 $c2014
520 $aEvapotranspiration (E) in the Amazon connects forest function and regional climate via its role in precipitation recycling However, the mechanisms regulating water supply to vegetation and its demand for water remain poorly understood, especially during periods of seasonal water deficits In this study, we address two main questions: First, how do mechanisms of water supply (indicated by rooting depth and groundwater) and vegetation water demand (indicated by stomatal conductance and intrinsic water use efficiency) control evapotranspiration (E) along broad gradients of climate and vegetation from equatorial Amazonia to Cerrado, and second, how do these inferred mechanisms of supply and demand compare to those employed by a suite of ecosystem models? We used a network of eddy covariance towers in Brazil coupled with ancillary measurements to address these questions With respect to the magnitude and seasonality of E, models have much improved in equatorial tropical forests by eliminating most dry season water limitation, diverge in performance in transitional forests where seasonal water deficits are greater, and mostly capture the observed seasonal depressions in E at Cerrado However, many models depended universally on either deep roots or groundwater to mitigate dry season water deficits, the relative importance of which we found does not vary as a simple function of climate or vegetation In addition, canopy stomatal conductance (gs) regulates dry season vegetation demand for water at all except the wettest sites even as the seasonal cycle of E follows that of net radiation In contrast, some models simulated no seasonality in gs, even while matching the observed seasonal cycle of E. We suggest that canopy dynamics mediated by leaf phenology may play a significant role in such seasonality, a process poorly represented in models Model bias in gs and E, in turn, was related to biases arising from the simulated light response (gross primary productivity, GPP) or the intrinsic water use efficiency of photosynthesis (iWUE). We identified deficiencies in models which would not otherwise be apparent based on a simple comparison of simulated and observed rates of E. While some deficiencies can be remedied by parameter tuning, in most models they highlight the need for continued process development of belowground hydrology and in particular, the biological processes of root dynamics and leaf phenology, which via their controls on E, mediate vegetation-climate feedbacks in the tropics.
650 $aAmazonia
650 $aÁgua
650 $aCerrado
650 $aEvapotranspiração
650 $aFloresta Tropical
700 1 $aRESTREPO-COUPE, N.
700 1 $aARAIN, M. A.
700 1 $aBAKER, I. T.
700 1 $aCESTARO, B. P.
700 1 $aCIAIS, P.
700 1 $aFISHER, J. B.
700 1 $aGALBRAITH, D.
700 1 $aGUAN, X.
700 1 $aGULDEN, L.
700 1 $aHURK, B. van den
700 1 $aICHII, K.
700 1 $aIMBUZEIRO, H.
700 1 $aJAIN, A.
700 1 $aLEVINE, N.
700 1 $aMIGUEZ-MACHO, G.
700 1 $aPOULTER, B.
700 1 $aROBERTI, D. R.
700 1 $aSAKAGUCHI, K.
700 1 $aSAHOO, A.
700 1 $aSCHAEFER, K.
700 1 $aSHI, M.
700 1 $aVERBEECK, H.
700 1 $aYANG, Z.-L.
700 1 $aARAUJO, A. C.
700 1 $aKRUIJT, B.
700 1 $aMANZI, A. O.
700 1 $aROCHA, H. R. da
700 1 $aRANDOW, C. von
700 1 $aMUZA, M. N.
700 1 $aBORAK, J.
700 1 $aCOSTA, M. H.
700 1 $aGONÇALVES, L. G. G. de
700 1 $aZENG, X.
700 1 $aSALESKA, S. R.
773 $tAgricultural and Forest Meteorology$gv. 191, p. 33-50, June 2014.
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Registro original: |
Embrapa Amazônia Oriental (CPATU) |
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| Registros recuperados : 16 | |
| 2. |  | SANTOS, K. M. O. dos; ABREU, L. de; MORAES, G. de; VASCONCELOS, A. S. do E.; SALLES, H.; TODOROV, S. Functional properties of lactobacillus plantarum strains isolated from Brazilian goat meil and cheese. In: THE INTERNATIONAL SCIENTIFIC CONFERENCE ON PROBIOTICS AND PREBIOTICS, 11., 2017, Budapest. Proceedings... Slovak Republic: Pamida International, 2017. p. 135-136. IPC.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Agroindústria de Alimentos. |
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| 4. | | OLIVEIRA, J. da S.; SANTOS, K. M. O. dos; VIEIRA, A. D. S.; FERREIRA, K. S. de M.; BURITI, F. C. A.; TODOROV, S. D. Estudo da suscetibilidade a antibióticos de Enterococcus spp. nativos isolados de amostras de queijos de coalho artesanais do Ceará. In: CONGRESSO BRASILEIRO DE MICROBIOLOGIA, 26., 2011, Foz do Iguaçu. Resumos. Foz do Iguaçu: Sociedade Brasileira de Microbiologia, 2011. Resumo: 885-1.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Caprinos e Ovinos. |
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| 7. | | SANTOS, K. M. O. dos; OLIVEIRA, J. da S.; VIEIRA, A. D. S.; SILVA, L. M. F. da; FRANCO, B. D. G. de M.; TODOROV, S. D. Screening for anti-listeria bacteriocins produced by lactic acid bacteria isolated from goat milk in Ceará, Brazil. In: WORLD CONGRESS OF FOOD SCIENCE AND TECHNOLOGY, 16.; LATIN AMERICAN SEMINAR OF FOOD SCIENCE AND TECHNOLOGY, 17., 2012, Foz do Iguaçu. Addressing global food security and wellness through food science and technology: abstracts. Foz do Iguaçu: ALACCTA, 2012. 1 CD-ROM.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Caprinos e Ovinos. |
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| 8. | | TODOROV, S. D.; VIEIRA, A. D. S.; BURITI, F. C. A.; ROCHA, C. R. C.; LOPES, A. C. de S.; SANTOS, K. M. O. dos; BRUNO, L. M.; FRANCO, B. D. G. de M. Brazilian goat milk as a source of bacteriocinogenic strains. In: CONGRESSO BRASILEIRO DE MICROBIOLOGIA, 26., 2011, Foz do Iguaçu. Resumos. Foz do Iguaçu: Sociedade Brasileira de Microbiologia, 2011. Resumo:1144-1.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Caprinos e Ovinos. |
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| 9. | | SANTOS, K. M. O. dos; VIEIRA, A. D. S.; OLIVEIRA, J. da; ROCHA, C. R. C.; LOPES, A. C. S.; BRUNO, L. M.; BORGES, M. de F.; FRANCO, B. D. G. M.; TODOROV, S. Characterization of bacteriocin production, safety and technological potential of two Enterococcus faecium stains isolated from Brazilian Artisanal Cheeses. In: IAFP ANNUAL MEETING, 2013, Charlotte, North Carolina. Abstracts... Des Moines: International Association for Food Protection, 2013. Ref. P2-117.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Caprinos e Ovinos. |
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| 10. | | SANTOS, K. M. O. dos; VIEIRA, A. D. S.; ROCHA, C. R. C.; NASCIMENTO, J. C. F. do; LOPES, A. C. de S.; BRUNO, L. M.; CARVALHO, J. D. G.; FRANCO, B. D. G. de M.; TODOROV, S. D. Brazilian artisanal cheeses as a source of beneficial Enterococcus faecium strains: characterization of the bacteriocinogenic potential. Annals of microbiology, v. 64, n. 4, p. 1463-1471, Dec. 2014.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 1 |
| Biblioteca(s): Embrapa Caprinos e Ovinos. |
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| 11. | | SANTOS, K. M. O. dos; VIEIRA, A. D. S.; ROCHA, C. R. C.; NASCIMENTO, J. C. F. do; LOPES, A. C. de S.; BRUNO, L. M.; CARVALHO, J. D. G.; MELO FRANCO, B. D. G. de; TODOROV, S. D. Brazilian artisanal cheeses as a source of beneficial Enterococcus faeciumstrains: characterization of the bacteriocinogenic potential. Annals of Microbiology, v. 64, n. 4, p. 1463-1471, 2014.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 1 |
| Biblioteca(s): Embrapa Agroindústria Tropical. |
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| 12. | | SANTOS, K. M. O. dos; VIEIRA, A. D. S.; FIGUEIREDO, H. O. S.; OLIVEIRA, J. daS.; ROCHA, C. R. C.; BORGES, M. de F.; BRUNO, L. M.; FRANCO, B. D. G. de M.; TODOROV, S. D. Safety, beneficial and technological properties of Enterococcus faecium isolated from Brazilian cheeses. Brazilian Journal of Microbiology, São Paulo, v. 46, n. 1, p. 237-249, 2015.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 1 |
| Biblioteca(s): Embrapa Agroindústria Tropical. |
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| 13. | | SANTOS, K. M. O. dos; VIEIRA, A. D. S.; SALLES, H. O.; OLIVEIRA, J. da S.; ROCHA, C. R. C.; BORGES, M. de F.; BRUNO, L. M.; FRANCO, B. D. G. de; TODOROV, S. D. Safety, beneficial and technological properties of Enterococcus faecium isolated from Brazilian cheeses. Brazilian Journal of Microbiology, São Paulo, v. 46, n. 1, p. 237-249, Mar. 2015.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 1 |
| Biblioteca(s): Embrapa Agroindústria de Alimentos; Embrapa Caprinos e Ovinos. |
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| 14. | | SANTOS, K. M. O. dos; VIEIRA, A. D. S.; BURITI, F. C. A.; NASCIMENTO, J. C. F. do; MELO, M. E. S. de; BRUNO, L. M.; BORGES, M. de F.; ROCHA, C. R. C.; LOPES, A. C. de S.; FRANCO, B. D. G. de M.; TODOROV, S. D. Artisanal coalho cheeses as source of beneficial Lactobacillus plantarum and Lactobacillus rhamnosus strains. Dairy Science & Technology, oct. 2014. 22 p.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 2 |
| Biblioteca(s): Embrapa Agroindústria de Alimentos. |
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| 15. | | SANTOS, K. M. O. dos; VIEIRA, A. D. S.; BURITI, F. C. A.; NASCIMENTO, J. C. F do; MELO, M. E. S. de; BRUNO, L. M.; BORGES, M. de F.; ROCHA, C. R. C.; LOPES, A. C. de S.; FRANCO, B. D. G. de M.; TODOROV, S. D. Artisanal Coalho cheeses as source of beneficial Lactobacillus plantarum and Lactobacillus rhamnosus strains. Dairy Science & Technology, v. 95, n. 2, p. 209-230, 2015.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 2 |
| Biblioteca(s): Embrapa Agroindústria Tropical. |
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| 16. | | VIEIRA, A. D. S.; OLIVEIRA, J. da S.; FERREIRA, K. S. de M.; BURITI, F. C. A.; TODOROV, S. D.; FRANCO, B. D. G. de M.; ROCHA, C. R. C.; LOPES, A. C. de S.; BRUNO, L. M.; SANTOS, K. M. O. dos. Caracterização parcial do potencial probiótico de cepas de Enterococcus faecium isoladas de queijo tipo coalho do estado do Ceará - Brasil. In: CONGRESSO BRASILEIRO DE MICROBIOLOGIA, 26., 2011, Foz do Iguaçu. Resumos. Foz do Iguaçu: Sociedade Brasileira de Microbiologia, 2011. Resumo: 1373-2.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Caprinos e Ovinos. |
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| Registros recuperados : 16 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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