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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: |
16/10/2018 |
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Data da última atualização: |
17/09/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
FU, Z.; GERKEN, T.; BROMLEY, G.; ARAUJO, A. C. de; BONAL, D.; BURBAN, B.; FICKLIN, D.; FUENTES, J. D.; GOULDEN, M.; HIRANO, T.; KOSUGI, Y.; LIDDELL, M.; NICOLINI, G.; NIU, S.; ROUPSARD, O.; STEFANI, P.; MI, C.; TOFTE, Z.; XIAO, J.; VALENTINI, R.; WOLF, S.; STOY, P. C. |
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Afiliação: |
ZHENG FU, MONTANA STATE UNIVERSITY; TOBIAS GERKEN, MONTANA STATE UNIVERSITY; GABRIEL BROMLEY, MONTANA STATE UNIVERSITY; ALESSANDRO CARIOCA DE ARAUJO, CPATU; DAMIEN BONAL, UNIVERSITÉ DE LORRAINE; BENOÎT BURBAN, INSTITUT NATIONAL DE LA RECHERCHE AGRONOMIQUE; DARREN FICKLIN, INDIANA UNIVERSITY; JOSE D. FUENTES, THE PENNSYLVANIA STATE UNIVERSITY; MICHAEL GOULDEN, UNIVERSITY OF CALIFORNIA; TAKASHI HIRANO, HOKKAIDO UNIVERSITY; YOSHIKO KOSUGI, KYOTO UNIVERSITY; MICHAEL LIDDELL, JAMES COOK UNIVERSITY; GIACOMO NICOLINI, UNIVERSITY OF TUSCIA; SHULI NIU, CHINESE ACADEMY OF SCIENCES; OLIVIER ROUPSARD, CENTRE DE COOPÉRATION INTERNATIONALE EN RECHERCHE AGRONOMIQUE POUR LE DÉVELOPPEMENT; PAOLO STEFANI, UNIVERSITY OF TUSCIA; CHUNRONG MI, UNIVERSITY OF CHINESE ACADEMY OF SCIENCES; ZADDY TOFTE, MONTANA STATE UNIVERSITY; JINGFENG XIAO, UNIVERSITY OF NEW HAMPSHIRE; RICCARDO VALENTINI, UNIVERSITY OF TUSCIA; SEBASTIAN WOLF, EIDGENÖSSISCHE TECHNISCHE HOCHSCHULE ZÜRICH; PAUL C. STOY, MONTANA STATE UNIVERSITY. |
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Título: |
The surface-atmosphere exchange of carbon dioxide in tropical rainforests: sensitivity to environmental drivers and flux measurement methodology. |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
Agricultural and Forest Meteorology, v. 263, p. 292-307, Dec. 2018. |
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DOI: |
10.1016/j.agrformet.2018.09.001 |
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Idioma: |
Inglês |
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Conteúdo: |
Tropical rainforests play a central role in the Earth system by regulating climate, maintaining biodiversity, and sequestering carbon. They are under threat by direct anthropogenic impacts like deforestation and the indirect anthropogenic impacts of climate change. A synthesis of the factors that determine the net ecosystem exchange of carbon dioxide (NEE) at the site scale across different forests in the tropical rainforest biome has not been undertaken to date. Here, we study NEE and its components, gross ecosystem productivity (GEP) and ecosystem respiration (RE), across thirteen natural and managed forests within the tropical rainforest biome with 63 total site-years of eddy covariance data. Our results reveal that the five ecosystems with the largest annual gross carbon uptake by photosynthesis (i.e. GEP3000g C m-2 y-1) have the lowest net carbon uptake ? or even carbon losses ? versus other study ecosystems because RE is of a similar magnitude. Sites that provided subcanopy CO2 storage observations had higher average magnitudes of GEP and RE and lower average magnitudes of NEE, highlighting the importance of measurement methodology for understanding carbon dynamics in ecosystems with characteristically tall and dense vegetation. A path analysis revealed that vapor pressure deficit (VPD) played a greater role than soil moisture or air temperature in constraining GEP under light saturated conditions across most study sites, but to differing degrees from -0.31 to -0.87umol CO2 m-2 s-1 hPa-1. Climate projections from 13 general circulation models (CMIP5) under the representative concentration pathway that generates 8.5W m-2 of radiative forcing suggest that many current tropical rainforest sites on the lower end of the current temperature range are likely to reach a climate space similar to present-day warmer sites by the year 2050, warmer sites will reach a climate not currently experienced, and all forests are likely to experience higher VPD. Results demonstrate the need to quantify if and how mature tropical trees acclimate to heat and water stress, and to further develop flux-partitioning and gap-filling algorithms for defensible estimates of carbon exchange in tropical rainforests. MenosTropical rainforests play a central role in the Earth system by regulating climate, maintaining biodiversity, and sequestering carbon. They are under threat by direct anthropogenic impacts like deforestation and the indirect anthropogenic impacts of climate change. A synthesis of the factors that determine the net ecosystem exchange of carbon dioxide (NEE) at the site scale across different forests in the tropical rainforest biome has not been undertaken to date. Here, we study NEE and its components, gross ecosystem productivity (GEP) and ecosystem respiration (RE), across thirteen natural and managed forests within the tropical rainforest biome with 63 total site-years of eddy covariance data. Our results reveal that the five ecosystems with the largest annual gross carbon uptake by photosynthesis (i.e. GEP3000g C m-2 y-1) have the lowest net carbon uptake ? or even carbon losses ? versus other study ecosystems because RE is of a similar magnitude. Sites that provided subcanopy CO2 storage observations had higher average magnitudes of GEP and RE and lower average magnitudes of NEE, highlighting the importance of measurement methodology for understanding carbon dynamics in ecosystems with characteristically tall and dense vegetation. A path analysis revealed that vapor pressure deficit (VPD) played a greater role than soil moisture or air temperature in constraining GEP under light saturated conditions across most study sites, but to differing degrees from -0.31 to -0.87umo... Mostrar Tudo |
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Palavras-Chave: |
Respiração do ecossistema; Variabilidade climática. |
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Thesagro: |
Dióxido de Carbono; Floresta Tropical. |
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Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
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Marc: |
LEADER 03464naa a2200433 a 4500
001 2097454
005 2024-09-17
008 2018 bl uuuu u00u1 u #d
024 7 $a10.1016/j.agrformet.2018.09.001$2DOI
100 1 $aFU, Z.
245 $aThe surface-atmosphere exchange of carbon dioxide in tropical rainforests$bsensitivity to environmental drivers and flux measurement methodology.$h[electronic resource]
260 $c2018
520 $aTropical rainforests play a central role in the Earth system by regulating climate, maintaining biodiversity, and sequestering carbon. They are under threat by direct anthropogenic impacts like deforestation and the indirect anthropogenic impacts of climate change. A synthesis of the factors that determine the net ecosystem exchange of carbon dioxide (NEE) at the site scale across different forests in the tropical rainforest biome has not been undertaken to date. Here, we study NEE and its components, gross ecosystem productivity (GEP) and ecosystem respiration (RE), across thirteen natural and managed forests within the tropical rainforest biome with 63 total site-years of eddy covariance data. Our results reveal that the five ecosystems with the largest annual gross carbon uptake by photosynthesis (i.e. GEP3000g C m-2 y-1) have the lowest net carbon uptake ? or even carbon losses ? versus other study ecosystems because RE is of a similar magnitude. Sites that provided subcanopy CO2 storage observations had higher average magnitudes of GEP and RE and lower average magnitudes of NEE, highlighting the importance of measurement methodology for understanding carbon dynamics in ecosystems with characteristically tall and dense vegetation. A path analysis revealed that vapor pressure deficit (VPD) played a greater role than soil moisture or air temperature in constraining GEP under light saturated conditions across most study sites, but to differing degrees from -0.31 to -0.87umol CO2 m-2 s-1 hPa-1. Climate projections from 13 general circulation models (CMIP5) under the representative concentration pathway that generates 8.5W m-2 of radiative forcing suggest that many current tropical rainforest sites on the lower end of the current temperature range are likely to reach a climate space similar to present-day warmer sites by the year 2050, warmer sites will reach a climate not currently experienced, and all forests are likely to experience higher VPD. Results demonstrate the need to quantify if and how mature tropical trees acclimate to heat and water stress, and to further develop flux-partitioning and gap-filling algorithms for defensible estimates of carbon exchange in tropical rainforests.
650 $aDióxido de Carbono
650 $aFloresta Tropical
653 $aRespiração do ecossistema
653 $aVariabilidade climática
700 1 $aGERKEN, T.
700 1 $aBROMLEY, G.
700 1 $aARAUJO, A. C. de
700 1 $aBONAL, D.
700 1 $aBURBAN, B.
700 1 $aFICKLIN, D.
700 1 $aFUENTES, J. D.
700 1 $aGOULDEN, M.
700 1 $aHIRANO, T.
700 1 $aKOSUGI, Y.
700 1 $aLIDDELL, M.
700 1 $aNICOLINI, G.
700 1 $aNIU, S.
700 1 $aROUPSARD, O.
700 1 $aSTEFANI, P.
700 1 $aMI, C.
700 1 $aTOFTE, Z.
700 1 $aXIAO, J.
700 1 $aVALENTINI, R.
700 1 $aWOLF, S.
700 1 $aSTOY, P. C.
773 $tAgricultural and Forest Meteorology$gv. 263, p. 292-307, Dec. 2018.
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Embrapa Amazônia Oriental (CPATU) |
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| Registros recuperados : 32 | |
| 5. |  | FERNANDES, C. E. dos S.; ZART, A. L.; FERREIRA, L. C. L.; ROSA, A. do N. Aptidão reprodutiva de touros. In: ROSA, A. do N.; MARTINS. E. N.; MENEZES, G. R. de O.; SILVA, L. O. C. da (Ed.). Melhoramento genético aplicado em gado de corte: Programa Geneplus-Embrapa. Brasília, DF: Embrapa; Campo Grande, MS: Embrapa Gado de Corte, 2013. Capítulo 4. p. 38-47.| Tipo: Capítulo em Livro Técnico-Científico |
| Biblioteca(s): Embrapa Gado de Corte. |
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| 10. | | FERNANDES, C. E.; SILVA, A. E. D. F.; LOPES, S. C. P.; MORAES, S. D. S. Estimativa da variância para a qualidade espermática de touros Nelore com degeneração testicular experimental. In: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 41., 2004, Campo Grande, MS. A produção animal e a segurança alimentar: anais dos simpósios e dos resumos. Campo Grande, MS: Sociedade Brasileira de Zootecnia: Embrapa Gado de Corte, 2004. 3 p. 1 CD-ROM. MR 027.| Biblioteca(s): Embrapa Gado de Corte. |
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| 12. | | MIRANDA, P. de A. B.; FERNANDES, C. E.; MORAES, S. D. S.; OLIVEIRA, A. R. de; LOPES, S. da C. P.; AMARAL, T. B.; FIALHO, M. P. F. Análise morfométrica da cabeça espermática e prevalência de condensação anormal da cromatina em touros Nelore com deficiência de ZN na dieta. In: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 43., 2006, João Pessoa. Anais dos resumos... Viçosa, MG: Sociedade Brasileira de Zootecnia, 2006.| Biblioteca(s): Embrapa Gado de Corte. |
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| 13. | | FERNANDES, C. E.; SILVA, A. E. D. F.; AZEVEDO, H. C.; BICUDO, S. D.; OLIVEIRA, A. R. de; LOPES, S. C. P.; MORAES, S. D. S. Morfometria da cabeça espermática e correlação com demais variáveis seminais em touros Nelore com alterações na espermiogênese. In: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 41., 2004, Campo Grande, MS. A produção animal e a segurança alimentar: anais dos simpósios e dos resumos. Campo Grande, MS: Sociedade Brasileira de Zootecnia: Embrapa Gado de Corte, 2004. 4 p. 1 CD-ROM. MR 028.| Biblioteca(s): Embrapa Gado de Corte. |
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| 15. | | MOREIRA, A. P.; LIMA, J. J. F.; OLIVEIRA, F. C. de; LEVY-PEREIRA, N.; CHAGAS, E. C.; FERNANDES, C. E.; FERRAZ, A. L. J.; CAMPOS, C. M. de. Dietary supplementation with Ocimum gratissimum essential oil improves the intestinal bacterial populations of Piaractus mesopotamicus. Brazilian Journal of Biology, v. 85, e283524, 2025. Título em Português: Óleo essencial de Ocimum gratissimum melhora a microbiota intestinal do Piaractus mesopotamicus.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 3 |
| Biblioteca(s): Embrapa Amazônia Ocidental. |
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| 16. | | GOIOZO, P. F. I.; PIRES, P. P.; AMARAL, T. B.; FERNANDES, C. E. S.; DI SANTIS, G. W.; DI SANTIS, G. W.; BANDARRA E. P. Estudo exploratório de indicadores e prevalência de subfertilidade em touros da raça nelore (Bos taurus indicus): dados preliminares. In: JORNADA CIENTÍFICA DA EMBRAPA GADO DE CORTE, 1., 2005, Campo Grande, MS: Embrapa Gado de Corte, 2005. 1 p.| Biblioteca(s): Embrapa Gado de Corte. |
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| 18. | | OLIVEIRA, A. R. de; MORAES, S. D. S.; FERNANDES, C. E.; LOPES, S. C. P.; SOARES, C. O.; AMARAL, T. B.; MIRANDA, P. de A. B. Efeito do nível de zinco na dieta sobre a qualidade seminal e correlação com a concentração de zinco circulante e no plasma seminal em touros. In: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 41., 2004, Campo Grande, MS. A produção animal e a segurança alimentar: anais dos simpósios e dos resumos. Campo Grande, MS: Sociedade Brasileira de Zootecnia: Embrapa Gado de Corte, 2004. 4 p. 1 CD-ROM. MR 006.| Biblioteca(s): Embrapa Gado de Corte. |
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| 19. | | OLIVEIRA, A. R. de; MORAIS, M. da G.; MORAES, S. da S.; FERNANDES, C. E.; ÍTAVO, L. C. V.; ABREU, U. G. P. de. Efeito de diferentes fontes de concentrações de zinco na mistura mineral sobre desempenho e características seminais de touros jovens criados em campo. Separata de: Ciência Animal Brasileira, v.8, n.3, p.465-477, jul./set.2007.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: Nacional - B |
| Biblioteca(s): Embrapa Pantanal. |
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| 20. | | PUPIN, R. C.; MELO, G. K. A.; HECKLER, R. F.; FACCIN, T. C.; ÍTAVO, C. C. B. F.; FERNANDES, C. E.; GOMES, D. C.; LEMOS, R. A. A. Identification of lamb flocks susceptible and resistant against Brachiaria poisoning. Pesquisa Veterinária Brasileira, Rio de Janeiro, v. 36, n. 5, p. 383-388, maio. 2016.| Biblioteca(s): Embrapa Unidades Centrais. |
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| Registros recuperados : 32 | |
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