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| Registros recuperados : 97 | |
| 21. |  | CALHEIROS, D. F.; MOREIRA, M. Z.; MARTINELLI, L. A.; HAMILTON, S. K.; CAMARGO, P. B.; OLIVEIRA, M. D. Composicao isotopica de organismos da cadeia trofica aquatica do Pantanal do Rio Paraguai, MS. In: SIMPOSIO SOBRE RECURSOS NATURAIS E SOCIO-ECONOMICOS DO PANTANAL, 3., 2000, Corumba. Os desafios do novo milenio - resumos. Corumba: Embrapa Pantanal, 2000. p.171-172.| Biblioteca(s): Embrapa Pantanal. |
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| 23. | | FELSEMBURGH, C. A. A.; SANTOS, K. J. S. dos; CAMARGO, P. B. de; CARMO, J. B. do; TRIBUZY, E. S. Respostas ecofisiológicas de Aniba parviflora ao sombreamento. Pesquisa Florestal Brasileira, Colombo, v. 36, n. 87, p. 201-210, jul./set. 2016.| Biblioteca(s): Embrapa Florestas. |
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| 24. | | REIS, L. C.; PICCOLO, M. C.; DOMINGUES, G.; COSTA, C. F. G.; FIGUEIREDO, R. de O.; CAMARGO, P. B. de. Evolução de parâmetros qualitativos nos corpos hídricos em áreas de restauração, Extrema - MG. In: SIMPÓSIO CIENTÍFICO DOS PÓS-GRADUANDOS NO CENA, 11., 2018, Piracicaba. Ensino, pesquisa e extensão: integração, funcionalidade e aplicabilidade: [resumos]... Piracicaba, SP: CENA/USP, 2018.| Biblioteca(s): Embrapa Meio Ambiente. |
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| 25. | | SILVA, K. G. da; FERREIRA, M. L.; SILVA, E. A. da; KANASHIRO, S.; CAMARGO, P. B. de; TAVARES, A. R. Nitrogen efficiency indexes for evaluating nitrogen uptake and use in ornamental bromeliad?s root system and tank. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 53, n. 6, p. 703-709, June, 2018. Título em português: Índices de eficiência do nitrogênio para avaliação da absorção e da utilização de nitrogênio no sistema radicular e no tanque de bromélias ornamentais.| Biblioteca(s): Embrapa Unidades Centrais. |
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| 26. | | REIS, L. C.; PICCOLO, M. C.; COSTA, C. F. G.; CAMARGO, P. B. de; FIGUEIREDO, R. de O. Concentração iônica e origem das principais espécies químicas inorgânicas fluviais dissolvidas na bacia do Ribeirão das Posses, Extrema/MG. In: CONGRESSO BRASILEIRO DE LIMNOLOGIA, 16., 2017, Rio de Janeiro. Recursos hídricos em crise: sustentabilidade, biodiversidade e integração de conhecimentos face a mudanças globais: resumos... Rio de Janeiro: Sociedade Brasileira de Limnologia, 2017. Ref. SE11. p. 133.| Biblioteca(s): Embrapa Meio Ambiente. |
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| 28. | | HAREN, J. L. M. van; OLIVEIRA JUNIOR, R. C. de; RESTREPO-COUPE, N.; HUTYRA, L.; CAMARGO, P. B. de; KELLER, M.; SALESKA, S. R. Do plant species influence soil CO2 and N2O fluxes in a diverse tropical forest? Journal of Geophysical Research, v. 115, G03010, 2010.| Biblioteca(s): Embrapa Amazônia Oriental. |
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| 29. | | NASCIMENTO, A. F. do; FURQUIM, S. A. C.; COUTO, E. G.; BEIRIGO, R. M.; OLIVEIRA JUNIOR, J. C. de O.; CAMARGO, P. B. de; VIDAL-TORRADO, P. Genesis of textural contrasts in subsurface soil horizons in the northern Pantanal-Brazil. Revista Brasileira de Ciências do Solo, v. 37, n. 5, p. 1113-1127, out. 2013.| Biblioteca(s): Embrapa Solos. |
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| 30. | | SILVA, A. M. da; NALON, M. A.; KRONKA, F. J. do N.; ALVARES. C. A.; CAMARGO, P. B. de; MARTINELLI, L. A. Historical land cover in different slope and riparian buffer zones in watersheds of the state of São Paulo, Brazil. Scientia Agricola, Piracicaba, v. 64, n. 4, p. 325-335, July/Aug. 2007.| Biblioteca(s): Embrapa Florestas. |
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| 31. | | MENDONÇA, L. A. R.; FRISCHKORN, H.; SANTIAGO, M. F.; CAMARGO, P. B. de; LIMA, J. O. G. de; MENDES FILHO, J. Identificação de mudanças florestais por 13C e 15N dos solos da Chapada do Araripe, Ceará. Revista Brasileira de Engenharia Agrícola e Ambiental, v.14, n.3, p.314–319, mar., 2010.| Biblioteca(s): Embrapa Algodão. |
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| 33. | | COSTA, C. F. G.; CAMARGO, P. B. de; FIGUEIREDO, R. de O.; PICCOLO, M. C.; REIS, L. C.; DIAS, V. J. Spatial variability and export of the carbon in relation to different land use of the Jaguari and Camanducaia river basin, Brazil. In: INTERNACIONAL CONFERENCE ON ECOHYDROLOGY FOR SECURITY OF AQUATIC ECOSYSTEMS AND SOCIETIES, 2017, Campos dos Goytacazes. Book of abstracts... Campos dos Goytacazes: UENF, 2017.| Biblioteca(s): Embrapa Meio Ambiente. |
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| 34. | | ZUCCARI, M. L.; FIGUEIREDO, R. de O.; TORRESAN, F. E.; SCANAVACA JUNIOR, L.; LEIVAS, J. F.; COSTA, C. F. G.; CAMARGO, P. B. de. Seleção de pontos de amostragem de água fluvial nas bacias hidrográficas dos rios Camanducaia e Jaguari. In: SEMINÁRIO DA REDE AGROHIDRO, 3.; WORKSHOP DO PROJETO OS IMPACTOS DA AGRICULTURA E DAS MUDANÇAS CLIMÁTICAS NOS RECURSOS HÍDRICOS, 1., 2015, Corumbá, MS. Água na agricultura: desafios frente às mudanças climáticas e de uso da terra: resumos. Corumbá: Embrapa Pantanal, 2015. p. 57.| Biblioteca(s): Embrapa Meio Ambiente; Embrapa Territorial. |
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| 35. | | MELO, A. W. F. de; CAMARGO, P. B. de; SALIMON, C. I.; DAVIDSON, E. A.; TRUMBORE, S. E.; VALENTIM, J. F. Soil carbon stocks and dynamics in Acre: contrasts with the remaining Brazilian Amazon. In: CONFERÊNCIA CIENTÍFICA DO LBA, 3., 2004, Brasília, DF. Anais de trabalhos completos... Brasília, DF: LBA, 2004. p. 175.| Biblioteca(s): Embrapa Acre. |
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| 36. | | SANTOS, S. R. dos; SCHELLEKENS, J.; BUURMAN, P.; CORNELIS, J-T.; VANCAMPENHOUT, K.; SILVA, W. T. L. da; CAMARGO, P. B. de; VIDAL-TORRADO, P. Selective sorption and desorption of DOM in Podzol horizons - DOC and aluminium contents of leachates from a column experiment. Science of the Total Environment, v. 872. 162234, 2023. 1 - 10| Biblioteca(s): Embrapa Instrumentação. |
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| 37. | | CHAVES, S. S. de F.; MARTORANO, L. G.; CAMARGO, P. B. de; EL-HUSNY, J. C.; FERNANDES, P. C. C.; VALENTE, M. A. Estoque de carbono no solo em área de pastagem convencional e sistema agrossilvipastoril em Paragominas. In: SIMPÓSIO DE ESTUDOS E PESQUISAS EM CIÊNCIAS AMBIENTAIS NA AMAZÔNIA, 2., 2013, Belém, PA. [Anais]. [Belém, PA]: Universidade do Estado do Pará, Centro de Ciências Naturais e Tecnologia, 2013. v. 2, p. 15-22.| Biblioteca(s): Embrapa Amazônia Oriental. |
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| 38. | | CHAVES, S. S. de F.; CAMARGO, P. B. de; OLIVEIRA JUNIOR, R. C. de; MELLO, M. N. de; DIAS, C. T. dos S. Estoque de carbono no solo em pastagens com diferentes sistemas de manejo no município de Belterra. In: CONGRESSO BRASILEIRO DE CIÊNCIA DO SOLO, 36., 2017, Belém, PA. Amazônia e seus solos: peculiaridades e potencialidades. Belém, PA: SBCS, 2017.| Biblioteca(s): Embrapa Amazônia Oriental. |
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| 39. | | BERENGUER, E.; BARLOW, J.; FERREIRA, J.; GARDNER, T. A.; ARAGÃO, L.; CAMARGO, P. B.; CERRI, C. E.; DURIGAN, M.; OLIVEIRA, R. C.; VIEIRA, E. C. G. Tropical forest degradation and carbon stocks: Insights from a large scale field assessment. In: ANNUAL MEETING OF THE ASSOCIATION FOR TROPICAL BIOLOGY AND CONSERVATION, 50., 2013, Costa Rica. ATBC Online Web Program: abstracts. [S.l.]: ATBC, 2013.| Biblioteca(s): Embrapa Amazônia Oriental. |
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| 40. | | OLIVEIRA JUNIOR, R. C. de; KELLER, M. M.; RAMOS, J. F. da F.; BELDINI, T. P.; CRILL, P. M.; CAMARGO, P. B. de; HAREN, J. van. Chemical analysis of rainfall and throughfall in the Tapajós National Forest, Belterra, Pará, Brazil. Revista Ambiente & Água, v. 10, n. 2, p. 263-285, abr./jun. 2015.| Biblioteca(s): Embrapa Amazônia Oriental; Embrapa Territorial. |
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| Registros recuperados : 97 | |
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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: |
26/06/2013 |
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Data da última atualização: |
07/11/2022 |
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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: |
IVANOV, V. Y.; HUTYRA, L. R.; WOFSY, S.; MUNGER, J. W.; SALESKA, S. R.; OLIVEIRA JUNIOR, R. C. de; CAMARGO, P. B. de. |
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Afiliação: |
Valeriy Y. Ivanov, University of Michigan / Harvard University; Lucy R. Hutyra, Harvard University / Boston University; Steven C. Wofsy, Harvard University; J. William Munger, Harvard University; Scott R. Saleska, University of Arizona; RAIMUNDO COSME DE OLIVEIRA JUNIOR, CPATU; Plínio B. de Camargo, USP. |
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Título: |
Root niche separation can explain avoidance of seasonal drought stress and vulnerability of overstory trees to extended drought in a mature Amazonian forest. |
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Ano de publicação: |
2012 |
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Fonte/Imprenta: |
Water Resources Research, v. 48, n. 12, p. 1-21, Dec. 2012. |
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DOI: |
10.1029/2012WR011972 |
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Idioma: |
Inglês |
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Conteúdo: |
Large areas of Amazonian evergreen forest experience seasonal droughts extending for three or more months, yet show maximum rates of photosynthesis and evapotranspiration during dry intervals. This apparent resilience is belied by disproportionate mortality of the large trees in manipulations that reduce wet season rainfall, occurring after 2?3 years of treatment. The goal of this study is to characterize the mechanisms that produce these contrasting ecosystem responses. A mechanistic model is developed based on the ecohydrological framework of TIN (Triangulated Irregular Network)-based Real Time Integrated Basin Simulator + Vegetation Generator for Interactive Evolution (tRIBS+VEGGIE). The model is used to test the roles of deep roots and soil capillary flux to provide water to the forest during the dry season. Also examined is the importance of ?root niche separation,? in which roots of overstory trees extend to depth, where during the dry season they use water stored from wet season precipitation, while roots of understory trees are concentrated in shallow layers that access dry season precipitation directly. Observational data from the Tapajós National Forest, Brazil, were used as meteorological forcing and provided comprehensive observational constraints on the model. Results strongly suggest that deep roots with root niche separation adaptations explain both the observed resilience during seasonal drought and the vulnerability of canopy-dominant trees to extended deficits of wet season rainfall. These mechanisms appear to provide an adaptive strategy that enhances productivity of the largest trees in the face of their disproportionate heat loads and water demand in the dry season. A sensitivity analysis exploring how wet season rainfall affects the stability of the rainforest system is presented. MenosLarge areas of Amazonian evergreen forest experience seasonal droughts extending for three or more months, yet show maximum rates of photosynthesis and evapotranspiration during dry intervals. This apparent resilience is belied by disproportionate mortality of the large trees in manipulations that reduce wet season rainfall, occurring after 2?3 years of treatment. The goal of this study is to characterize the mechanisms that produce these contrasting ecosystem responses. A mechanistic model is developed based on the ecohydrological framework of TIN (Triangulated Irregular Network)-based Real Time Integrated Basin Simulator + Vegetation Generator for Interactive Evolution (tRIBS+VEGGIE). The model is used to test the roles of deep roots and soil capillary flux to provide water to the forest during the dry season. Also examined is the importance of ?root niche separation,? in which roots of overstory trees extend to depth, where during the dry season they use water stored from wet season precipitation, while roots of understory trees are concentrated in shallow layers that access dry season precipitation directly. Observational data from the Tapajós National Forest, Brazil, were used as meteorological forcing and provided comprehensive observational constraints on the model. Results strongly suggest that deep roots with root niche separation adaptations explain both the observed resilience during seasonal drought and the vulnerability of canopy-dominant trees to extended defic... Mostrar Tudo |
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Palavras-Chave: |
Ecohidrologia; Estresse hídrico. |
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Thesagro: |
Floresta Tropical; Seca. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 02651naa a2200253 a 4500
001 1960641
005 2022-11-07
008 2012 bl uuuu u00u1 u #d
024 7 $a10.1029/2012WR011972$2DOI
100 1 $aIVANOV, V. Y.
245 $aRoot niche separation can explain avoidance of seasonal drought stress and vulnerability of overstory trees to extended drought in a mature Amazonian forest.$h[electronic resource]
260 $c2012
520 $aLarge areas of Amazonian evergreen forest experience seasonal droughts extending for three or more months, yet show maximum rates of photosynthesis and evapotranspiration during dry intervals. This apparent resilience is belied by disproportionate mortality of the large trees in manipulations that reduce wet season rainfall, occurring after 2?3 years of treatment. The goal of this study is to characterize the mechanisms that produce these contrasting ecosystem responses. A mechanistic model is developed based on the ecohydrological framework of TIN (Triangulated Irregular Network)-based Real Time Integrated Basin Simulator + Vegetation Generator for Interactive Evolution (tRIBS+VEGGIE). The model is used to test the roles of deep roots and soil capillary flux to provide water to the forest during the dry season. Also examined is the importance of ?root niche separation,? in which roots of overstory trees extend to depth, where during the dry season they use water stored from wet season precipitation, while roots of understory trees are concentrated in shallow layers that access dry season precipitation directly. Observational data from the Tapajós National Forest, Brazil, were used as meteorological forcing and provided comprehensive observational constraints on the model. Results strongly suggest that deep roots with root niche separation adaptations explain both the observed resilience during seasonal drought and the vulnerability of canopy-dominant trees to extended deficits of wet season rainfall. These mechanisms appear to provide an adaptive strategy that enhances productivity of the largest trees in the face of their disproportionate heat loads and water demand in the dry season. A sensitivity analysis exploring how wet season rainfall affects the stability of the rainforest system is presented.
650 $aFloresta Tropical
650 $aSeca
653 $aEcohidrologia
653 $aEstresse hídrico
700 1 $aHUTYRA, L. R.
700 1 $aWOFSY, S.
700 1 $aMUNGER, J. W.
700 1 $aSALESKA, S. R.
700 1 $aOLIVEIRA JUNIOR, R. C. de
700 1 $aCAMARGO, P. B. de
773 $tWater Resources Research$gv. 48, n. 12, p. 1-21, Dec. 2012.
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