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| 4. |  | HAREN, J. van; SALESKA, S.; HUETE, A.; KELLER, M.; OLIVEIRA, R. C. Amazon forest tree species composition influences soil fluxes of CO2 and N2O. In: SCIENCE TEAM MEETING, 10., 2006, Brasília, DF. Book of Abstracts... Manaus: LBA-ECO, 2006. p. 19.| Biblioteca(s): Embrapa Amazônia Oriental. |
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| 5. | | SALESKA, S. R.; WU, J.; GUAN, K.; ARAUJO, A. C.; HUETE, A.; NOBRE, A. D.; RESTREPO-COUPE, N. Dry-season greening of Amazon forests. Nature, v. 531, n. 7594, p. E4-E5, Mar. 2016.| Biblioteca(s): Embrapa Amazônia Oriental. |
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| 6. | | VAN HAREN, J.; OLIVEIRA JUNIOR, R. C. de; BELDINI, P. T.; CAMARGO, P. B.; KELLER, M.; SALESKA, S. Tree species effects on soil properties and greenhouse gas fluxes in East-central Amazonia: comparison between Monoculture and Diverse Forest. Biotropica, v. 45, n. 6, p. 709-718, 2013. Artigo publicado por Pesquisador Visitante da Embrapa Monitoramento por Satélite.| Biblioteca(s): Embrapa Amazônia Oriental; Embrapa Territorial. |
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| 7. | | GRANT, R. F.; HUTYRA, L. R.; OLIVEIRA, R. C.; MUNGER, J. W.; SALESKA, S. R.; WOFSY, S. C. Modeling the carbon balance of Amazonian rain forests: resolving ecological controls on net ecosystem productivity. Ecological Monographs, v. 79, n. 3, p. 445-463, Aug. 2009.| Biblioteca(s): Embrapa Amazônia Oriental. |
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| 9. | | HUNTER, M. O.; KELLE, M.; MORTON, D.; COOK, B.; LEFSKY, M.; DUCEY, M.; SALESKA, S.; OLIVEIRA JUNIOR, R. C. de; SCHIETTI, J. Structural dynamics of tropical moist forest gaps. Plos One, v. 10, n.7, p. 1-19, jul. 2015.| Biblioteca(s): Embrapa Amazônia Oriental; Embrapa Territorial. |
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| 10. | | STARK, S. C.; ENQUIST, B. J.; SALESKA, S. R.; LEITOLD, V.; SCHIETTI, J.; LONGO, M.; ALVES, L. F.; CAMARGO, P. B.; OLIVEIRA, R. C. Linking canopy leaf area and light environments with tree size distributions to explain Amazon forest demography. Ecology Letters, v. 18, n. 7, p. 636-645, July 2015.| Biblioteca(s): Embrapa Amazônia Oriental. |
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| 11. | | SALESKA, S.; RESTREPO-COUPE, N.; CAMPOS, K. S.; ALVES, L.; IVANOV, V.; LONGO, M.; OLIVEIRA JUNIOR, R. C. de; SILVA, R.; SMITH, M.; TAPAJOS, R.; TAYLOR, T. Do local-scale climate tipping points exist in Amazon forests, and can they warn of impending basin-scale tipping point vulnerability? In: EGU GENERAL ASSEMBLY, 2024, Vienna, Austria. EGU24-14707. Abstract. [S.l.]: EGU, 2024.| Biblioteca(s): Embrapa Amazônia Oriental. |
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| 12. | | WU, J.; ALBERT, L. P.; PROHASKA, N.; ELY, K.; WOLFE, B. T.; OLIVEIRA JUNIOR, R. C. de; SALESKA, S. R.; ROGERS, A.; SERBIN, S. P. A convergent spectroscopy-based approach for Vcmax across leaf age and growth environments. In: ESA ANNUAL MEETING, 2017, Portland. [Abstracts]. Washington, DC: Ecological Society of America, 2017. Abstract OOS 2-2.| Biblioteca(s): Embrapa Amazônia Oriental. |
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| 13. | | 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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| 14. | | NELSON, B.; TAVARES, J.; WU, J.; VALERIANO, D.; LOPES, A.; MAROSTICA, S.; MARTINS, G.; PROHASKA, N.; ALBERT, L.; ARAUJO, A. de; MANZI, A.; SALESKA, S.; HUETE, A. Seasonality of Central Amazon Forest Leaf Flush Using Tower-Mounted RGB Camera. In: AGU FALL MEETING, 2014, San Francisco. [Proceedings]. [San Francisco]: AGU, 2014.| Biblioteca(s): Embrapa Amazônia Oriental. |
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| 15. | | WOFSY, S.; HAYEK, M.; SALESKA, S.; LONGO, M.; MOORCROFT, P.; MUNGER, J.; RESTREPO-COUPE, N.; WIEDEMANN, K.; SILVA, R. da; CAMARGO, P.; COSME, R.; ALVES, L. Response of Amazonian tropical forests to short- and long-term climatic variations. In: AGU FALL MEETING, 2014, San Francisco. [Proceedings]. [San Francisco]: AGU, 2014.| Biblioteca(s): Embrapa Amazônia Oriental. |
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| 16. | | IVANOV, V. Y.; HUTYRA, L. R.; WOFSY, S.; MUNGER, J. W.; SALESKA, S. R.; OLIVEIRA JUNIOR, R. C. de; CAMARGO, P. B. de. Root niche separation can explain avoidance of seasonal drought stress and vulnerability of overstory trees to extended drought in a mature Amazonian forest. Water Resources Research, v. 48, n. 12, p. 1-21, Dec. 2012.| Biblioteca(s): Embrapa Amazônia Oriental. |
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| 17. | | MALHI, Y.; MELACK, J.; GATTI, L. V.; OMETTO, J.; KESSELMEIER, J.; WOLFF, S.; ARAGÃO, L. E. O.; COSTA, M.; SALESKA, S.; PANGALA, S. R.; BASSO, L. S.; RIZZO, L.; ARAUJO, A. C. de; RESTREPO-COUPE, N. Biogeochemical cycles of the Amazon. In: SCIENCE panel for the Amazon: Amazon assessment report 2021: part I: The Amazon as a regional entity of the Earth system. New York, NY: United Nations Sustainable Development Solutions Network, 2021. Cap. 6, pag. irregular.| Biblioteca(s): Embrapa Amazônia Oriental. |
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| 18. | | SALESKA, S. R.; ALBERT, L. P.; FU, R.; WU, J.; PROHASKA, N.; SMITH, M. N.; IVANOV, V.; CAMARGO, P. B.; OLIVEIRA JUNIOR, R. C. de; RESTREPO-COUPE, N.; WEHR, R.; HUXMAN, T. E. Does Amazon forest leaf phenology mediate transpiration seasonality and hence, ecoclimate teleconnections? In: ESA ANNUAL MEETING, 2017, Portland. [Abstracts]. Washington, DC: Ecological Society of America, 2017. Abstract OOS 11-5.| Biblioteca(s): Embrapa Amazônia Oriental. |
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| 19. | | RESTREPO-COUPE, N.; LEVINE, N. M.; CHRISTOFFERSEN, B. O.; ALBERT, L. P.; WU, J.; COSTA, M. H.; GALBRAITH, D.; IMBUZEIRO, H.; MARTINS, G.; ARAUJO, A. C. da; MALHI, Y. S.; ZENG, X.; MOORCROFT, P.; SALESKA, S. R. Do dynamic global vegetation models capture the seasonality of carbon fluxes in the Amazon basin? A data-model intercomparison. Global Change Biology, v. 23, n. 1, p. 191-208, Jan. 2017.| Biblioteca(s): Embrapa Amazônia Oriental. |
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| 20. | | 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. Asymmetric response of Amazon forest water and energy fluxes to wet and dry hydrological extremes reveals onset of a local drought-induced tipping point. Global Change Biology, v. 29, n. 21, p. 6077-6092, Nov. 2023.| Biblioteca(s): Embrapa Amazônia Oriental. |
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| Registros recuperados : 48 | |
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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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