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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: |
22/08/2006 |
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Data da última atualização: |
28/11/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
VASCONCELOS, S. S.; ZARIN, D. J.; CAPANU, M.; LITTELL, R.; DAVIDSON, E. A.; ISHIDA, F. Y.; SANTOS, E. B.; ARAÚJO, M. M.; ARAGÃO, D. V.; RANGEL-VASCONCELOS, L. G. T.; OLIVEIRA, F. de A.; MCDOWELL, W. H.; CARVALHO, C. J. R. de. |
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Afiliação: |
STEEL S. VASCONCELOS, University of Florida; CLAUDIO JOSE REIS DE CARVALHO, CPATU. |
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Título: |
Moisture and substrate availability constrain soil trace gas fluxes in an eastern Amazonian regrowth forest. |
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Ano de publicação: |
2004 |
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Fonte/Imprenta: |
Global Biogeochemical Cycles, v. 18, n. 2, p. 1-10, Jun. 2004. |
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DOI: |
10.1029/2003GB002210 |
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Idioma: |
Inglês |
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Conteúdo: |
Changes in land-use and climate are likely to alter moisture and substrate availability in tropical forest soils, but quantitative assessment of the role of resource constraints as regulators of soil trace gas fluxes is rather limited. The primary objective of this study was to quantify the effects of moisture and substrate availability on soil trace gas fluxes in an Amazonian regrowth forest. We measured the efflux of carbon dioxide (CO2), nitric oxide (NO), nitrous oxide (N2O), and methane (CH4) from soil in response to two experimental manipulations. In the first, we increased soil moisture availability during the dry season by irrigation; in the second, we decreased substrate availability by continuous removal of aboveground litter. In the absence of irrigation, soil CO2 efflux decreased during the dry season while irrigation maintained soil CO2 efflux levels similar to the wet season. Large variations in soil CO2 efflux consistent with a significant moisture constraint on respiration were observed in response to soil wet-up and dry-down events. Annual soil C efflux for irrigated plots was 27 and 13% higher than for control plots in 2001 and 2002, respectively. Litter removal significantly reduced soil CO2 efflux; annual soil C efflux in 2002 was 28% lower for litter removal plots compared to control plots. The annual soil C efflux:litterfall C ratio for the control treatment (4.0?5.2) was consistent with previously reported values for regrowth forests that indicate a relatively large belowground C allocation. In general, fluxes of N2O and CH4 were higher during the wet season and both fluxes increased during dry-season irrigation. There was no seasonal effect on NO fluxes. Litter removal had no significant impact on N oxide or CH4 emissions. Net soil nitrification did not respond to dry-season irrigation, but was somewhat reduced by litter removal. Overall, these results demonstrate significant soil moisture and substrate constraints on soil trace gas emissions, particularly for CO2, and suggest that climate and land-use changes that alter moisture and substrate availability are therefore likely to have an impact on atmosphere chemistry. MenosChanges in land-use and climate are likely to alter moisture and substrate availability in tropical forest soils, but quantitative assessment of the role of resource constraints as regulators of soil trace gas fluxes is rather limited. The primary objective of this study was to quantify the effects of moisture and substrate availability on soil trace gas fluxes in an Amazonian regrowth forest. We measured the efflux of carbon dioxide (CO2), nitric oxide (NO), nitrous oxide (N2O), and methane (CH4) from soil in response to two experimental manipulations. In the first, we increased soil moisture availability during the dry season by irrigation; in the second, we decreased substrate availability by continuous removal of aboveground litter. In the absence of irrigation, soil CO2 efflux decreased during the dry season while irrigation maintained soil CO2 efflux levels similar to the wet season. Large variations in soil CO2 efflux consistent with a significant moisture constraint on respiration were observed in response to soil wet-up and dry-down events. Annual soil C efflux for irrigated plots was 27 and 13% higher than for control plots in 2001 and 2002, respectively. Litter removal significantly reduced soil CO2 efflux; annual soil C efflux in 2002 was 28% lower for litter removal plots compared to control plots. The annual soil C efflux:litterfall C ratio for the control treatment (4.0?5.2) was consistent with previously reported values for regrowth forests that indicate a re... Mostrar Tudo |
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Palavras-Chave: |
Brasil. |
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Thesagro: |
Irrigação; Metano; Respiração do Solo; Teor de Umidade. |
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Thesaurus Nal: |
Amazonia. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 03200naa a2200349 a 4500
001 1408531
005 2022-11-28
008 2004 bl uuuu u00u1 u #d
024 7 $a10.1029/2003GB002210$2DOI
100 1 $aVASCONCELOS, S. S.
245 $aMoisture and substrate availability constrain soil trace gas fluxes in an eastern Amazonian regrowth forest.$h[electronic resource]
260 $c2004
520 $aChanges in land-use and climate are likely to alter moisture and substrate availability in tropical forest soils, but quantitative assessment of the role of resource constraints as regulators of soil trace gas fluxes is rather limited. The primary objective of this study was to quantify the effects of moisture and substrate availability on soil trace gas fluxes in an Amazonian regrowth forest. We measured the efflux of carbon dioxide (CO2), nitric oxide (NO), nitrous oxide (N2O), and methane (CH4) from soil in response to two experimental manipulations. In the first, we increased soil moisture availability during the dry season by irrigation; in the second, we decreased substrate availability by continuous removal of aboveground litter. In the absence of irrigation, soil CO2 efflux decreased during the dry season while irrigation maintained soil CO2 efflux levels similar to the wet season. Large variations in soil CO2 efflux consistent with a significant moisture constraint on respiration were observed in response to soil wet-up and dry-down events. Annual soil C efflux for irrigated plots was 27 and 13% higher than for control plots in 2001 and 2002, respectively. Litter removal significantly reduced soil CO2 efflux; annual soil C efflux in 2002 was 28% lower for litter removal plots compared to control plots. The annual soil C efflux:litterfall C ratio for the control treatment (4.0?5.2) was consistent with previously reported values for regrowth forests that indicate a relatively large belowground C allocation. In general, fluxes of N2O and CH4 were higher during the wet season and both fluxes increased during dry-season irrigation. There was no seasonal effect on NO fluxes. Litter removal had no significant impact on N oxide or CH4 emissions. Net soil nitrification did not respond to dry-season irrigation, but was somewhat reduced by litter removal. Overall, these results demonstrate significant soil moisture and substrate constraints on soil trace gas emissions, particularly for CO2, and suggest that climate and land-use changes that alter moisture and substrate availability are therefore likely to have an impact on atmosphere chemistry.
650 $aAmazonia
650 $aIrrigação
650 $aMetano
650 $aRespiração do Solo
650 $aTeor de Umidade
653 $aBrasil
700 1 $aZARIN, D. J.
700 1 $aCAPANU, M.
700 1 $aLITTELL, R.
700 1 $aDAVIDSON, E. A.
700 1 $aISHIDA, F. Y.
700 1 $aSANTOS, E. B.
700 1 $aARAÚJO, M. M.
700 1 $aARAGÃO, D. V.
700 1 $aRANGEL-VASCONCELOS, L. G. T.
700 1 $aOLIVEIRA, F. de A.
700 1 $aMCDOWELL, W. H.
700 1 $aCARVALHO, C. J. R. de
773 $tGlobal Biogeochemical Cycles$gv. 18, n. 2, p. 1-10, Jun. 2004.
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Registro original: |
Embrapa Amazônia Oriental (CPATU) |
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| Registros recuperados : 10 | |
| 1. |  | BALDISSERA, T. C.; MARÍN, A.; PINTO, C. E.; GARAGORRY, F. C.; BARBOSA, A. M.; CARVALHO, P. C. F. Altura adequada de pastejo maximiza ingestão de forragem e nutrientes. In: WORKSHOP DE CIÊNCIA E INOVAÇÃO EM PECUÁRIA, 1., 2020, Lages. Resumos... Florianópolis: Epagri, 2020. p. 84. (Epagri. Documentos, 322).| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Pecuária Sul. |
|    |
| 2. | | BIASIOLO, R.; BARBOSA, A. M.; LOPES, C. F.; RIBEIRO FILHO, H. M. N.; ZANELLA, P. G.; PINTO, C. E. Comportamento ingestivo de novilhos em pastagem natural palha grossa manejada em diferentes alturas. In: SIMPÓSIO DE INTEGRAÇÃO DA PÓS-GRADUAÇÃO, CIÊNCIA, TECNOLOGIA E INOVAÇÃO, 1., 2018, Lages. Anais eletrônicos... Lages: UESC, 2018.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Pecuária Sul. |
|  |
| 3. | | GARAGORRY, F. C.; LUSTOSA, S. B. C.; BALDISSERA, T. C.; PINTO, C. E.; PACENTHCHUK, F.; BARBOSA, A. M. Controle integrado de Eragrostis plana ness em pastagem de Urochloa brizantha cv. MG5: produção vegetal e animal. In: CONGRESSO BRASILEIRO DE SISTEMAS INTEGRADOS DE PRODUÇÃO AGROPECUÁRIA, 1.; ENCONTRO DE INTEGRAÇÃO LAVOURA-PECUÁRIA NO SUL DO BRASIL, 4., Pato Branco, 2017, Anais... Cascavel: UTFPR, 2017.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Pecuária Sul. |
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| 4. | | BARBOSA, A. M.; MARÍN GOMEZ, A.; BALDISSERA, T. C.; PINTO, C. E.; GARAGORRY, F. C.; CARVALHO, P. C. de F. Produção dos componentes morfológicos de capim quicuiu em diferentes alturas. In: SIMPÓSIO INTERNACIONAL CIÊNCIA, SAÚDE E TERRITÓRIO, 4., 2017, Lages. Alimentos seguros, nutritivos e suficientes: anais. Lages: Uniplac, 2017.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Pecuária Sul. |
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| 5. | | BARBOSA. A. M.; BALDISSERA, T. C.; PINTO, C. E.; LOPES, C. F.; BIASIOLO, B.; GARAGORRY, F. C. A sombra e o manejo do pasto: impacto no comportamento animal e vegetal. In: SIMPÓSIO DE INICIAÇÃO CIENTÍFICA DA EMBRAPA PECUÁRIA SUL, 9., 2019, Bagé. Resumos... Bagé: Embrapa Pecuária Sul, 2019. p. 8. (Embrapa Pecuária Sul. Eventos técnicos & científicos, 2). Fernando Flores Cardoso, editor técnico.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Pecuária Sul. |
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| 6. | | BALDISSERA, T. C.; BARBOSA, A. M.; PINTO, C. E.; GARAGORRY, F. C.; LOPES, C. F.; RIBEIRO FILHO, H. M. N. Taxa de ingestão de forragem de ovinos em pastejo de azevém-anual sombreado e pleno sol. In: WORKSHOP DE CIÊNCIA E INOVAÇÃO EM PECUÁRIA, 2., 2022, Lages. Construindo a pecuária sustentável em Santa Catarina: anais.... Florianópolis: Epagri, 2022. p. 105. (Epagri. Documentos, 355).| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Pecuária Sul. |
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| 7. | | BARBOSA, A. M.; ZANELLA, P. G.; DELLA GIUSTINA, L. H. P.; BALDISSERA, T. C.; PINTO, C. E.; SBRISSIA, A. F.; GARAGORRY, F. C. Acúmulo de forragem em pastagem natural palha grossa manejada em diferentes alturas. In: SIMPÓSIO DE INICIAÇÃO CIENTÍFICA DA EMBRAPA PECUÁRIA SUL, 7., 2017, Bagé. Resumos... Bagé: Embrapa Pecuária Sul, 2017. p. 10. Claudia Cristina Gulias Gomes, editora técnica.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Pecuária Sul. |
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| 8. | | BIASIOLO, R.; ZANELLA, P. G.; LOPES, C. F.; BARBOSA, A. M.; BALDISSERA, T. C.; PINTO, C. E.; GARAGORRY, F. C.; RIBEIRO-FILHO, H. M. N. Herbage intake by steers grazing in a natural grassland with predominance of Andropogon lateralis Nees managed under different canopy heights. Ciência Rural, v. 51, n. 10, p. 106-122, May 2021.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
| Biblioteca(s): Embrapa Pecuária Sul. |
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| 9. | | BARBOSA, A. M.; BALDISSERA, T. C.; PINTO, C. E.; GARAGORRY, F. C.; COSTA, M. M.; LOPES, C. F.; BIASIOLO, R.; RIBEIRO FILHO, H. M. N. Influência da luminosidade e manejo da missioneira-gigante sobre a taxa de ingestão de forragem em ovinos. In: WORKSHOP DE CIÊNCIA E INOVAÇÃO EM PECUÁRIA, 1., 2020, Lages. Resumos... Florianópolis: Epagri, 2020. p. 87. (Epagri. Documentos, 322).| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Pecuária Sul. |
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| 10. | | PINTO, C. E.; BALDISSERA, T. C.; GARAGORRY, F. C.; BARBOSA, A. M.; LOPES, C. F.; BIASIOLO, R.; NORONHA, L. K. G.; ZANELLA, P. G.; SILVA, G. M. da; COSTA, C. J. Qualidade de sementes de espécies forrageiras hibernais comercializadas no Planalto Catarinense. In: CONGRESSO BRASILEIRO DE SISTEMAS INTEGRADOS DE PRODUÇÃO AGROPECUÁRIA, 2.; ENCONTRO DE INTEGRAÇÃO LAVOURA-PECUÁRIA DO SUL DE MATO GROSSO, 2., Rondonópolis, 2018. Anais eletrônicos... Mato Grosso: UFMT, 2018.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Pecuária Sul. |
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| Registros recuperados : 10 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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