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Registro Completo |
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Biblioteca(s): |
Embrapa Semiárido. |
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Data corrente: |
04/03/1998 |
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Data da última atualização: |
04/01/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
PEIXOTO, S. E.; SOUZA, C. L. A. de; OLIVEIRA, C. A. V.; CARVALHO, B. C. L. de. |
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Afiliação: |
SÉRGIO ELISIO PEIXOTO, EBDA; CÉSAR LUIZ ALVES DE SOUZA, EBDA; CARLOS ALBERTO VASCONCELOS OLIVEIRA, CPATSA; BENEDITO CARLOS LEMOS DE CARVALHO, EBDA. |
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Título: |
Sistemas agricolas dos pequenos produtores do municipio de Euclides da Cunha-BA. |
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Ano de publicação: |
1997 |
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Fonte/Imprenta: |
Bahia Agrícola, Salvador, v. 2, n. 1, p. 9-18, nov. 1997. |
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Idioma: |
Português |
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Conteúdo: |
Este trabalho apresenta de forma resumida os resultados do subprojeto Caracterizacao dos Sistemas Agricolas de Cinco Municipios da regiao Nordeste do Estado da Bahia, tecnologias usadas e possibilidades de melhoria do padrao tecnologico dospequenos produtores, relativos ao municipio de Euclides da Cunha, que faz parte do projeto Estudos variaveis Agro-socio-economicos que caracterizam o pequeno produtor do Nordeste semi-arido: uma base de politicas de desenvolvimento para a regiao, coordenado pelo Centro de Pesquisa Agropecuaria do Tropico Semi-Arido - CPATSA da EMBRAPA. |
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Palavras-Chave: |
Bahia; Euclides da Cunha; Familiar farmers; Small farmers; Subsistance farming; Tipificacao. |
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Thesagro: |
Agricultura de Subsistência; Agricultura Familiar; Pequeno Produtor; Tecnologia. |
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Thesaurus Nal: |
Brazil; classification; livestock; technology. |
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Categoria do assunto: |
B Sociologia Rural |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/181372/1/Bahia-Agricola-v.2-n.1-p.9-18-1997.pdf
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Marc: |
LEADER 01480naa a2200325 a 4500
001 1132815
005 2023-01-04
008 1997 bl uuuu u00u1 u #d
100 1 $aPEIXOTO, S. E.
245 $aSistemas agricolas dos pequenos produtores do municipio de Euclides da Cunha-BA.
260 $c1997
520 $aEste trabalho apresenta de forma resumida os resultados do subprojeto Caracterizacao dos Sistemas Agricolas de Cinco Municipios da regiao Nordeste do Estado da Bahia, tecnologias usadas e possibilidades de melhoria do padrao tecnologico dospequenos produtores, relativos ao municipio de Euclides da Cunha, que faz parte do projeto Estudos variaveis Agro-socio-economicos que caracterizam o pequeno produtor do Nordeste semi-arido: uma base de politicas de desenvolvimento para a regiao, coordenado pelo Centro de Pesquisa Agropecuaria do Tropico Semi-Arido - CPATSA da EMBRAPA.
650 $aBrazil
650 $aclassification
650 $alivestock
650 $atechnology
650 $aAgricultura de Subsistência
650 $aAgricultura Familiar
650 $aPequeno Produtor
650 $aTecnologia
653 $aBahia
653 $aEuclides da Cunha
653 $aFamiliar farmers
653 $aSmall farmers
653 $aSubsistance farming
653 $aTipificacao
700 1 $aSOUZA, C. L. A. de
700 1 $aOLIVEIRA, C. A. V.
700 1 $aCARVALHO, B. C. L. de
773 $tBahia Agrícola, Salvador$gv. 2, n. 1, p. 9-18, nov. 1997.
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Registro original: |
Embrapa Semiárido (CPATSA) |
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Registro Completo
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Biblioteca(s): |
Embrapa Amazônia Oriental. |
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Data corrente: |
26/06/2018 |
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Data da última atualização: |
28/06/2018 |
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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: |
AVILA, A. L. de; SANDE, M. T. van der; DORMANN, C. F.; PEÑA-CLAROS, M.; POORTER, L.; FREITAS, L. J. M. de; RUSCHEL, A. R.; SILVA, J. N. M.; CARVALHO, J. O. P. de; BAUHUS, J. |
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Afiliação: |
Angela L. de Avila, University of Freiburg; Masha T. van der Sande, Wageningen University and Research; Carsten F. Dormann, University of Freiburg; Marielos Peña-Claros, Wageningen University and Research; Lourens Poorter, Wageningen University and Research; LUCAS JOSE MAZZEI DE FREITAS, CPATU; ADEMIR ROBERTO RUSCHEL, CPATU; José Natalino Macedo Silva, UFRA; João Olegário Pereira de Carvalho, UFRA; Jürgen Bauhus, University of Freiburg. |
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Título: |
Disturbance intensity is a stronger driver of biomass recovery than remaining tree-community attributes in a managed Amazonian forest. |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
Journal of Applied Ecology, v. 55, n. 4, p. 1647-1657, July 2018. |
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DOI: |
10.1111/1365-2664.13134 |
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Idioma: |
Inglês |
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Conteúdo: |
Forest recovery following management interventions is important to maintain ecosystem functioning and the provision of ecosystem services. It remains, however, largely unclear how above-ground biomass (AGB) recovery of species-rich tropical forests is affected by disturbance intensity and post-disturbance (remaining) tree-community attributes, following logging and thinning interventions. We investigated whether annual AGB increment (ΔAGB) decreases with management-related disturbance intensity (disturbance hypothesis), and increases with the diversity (niche-complementarity hypothesis) and the community-weighted mean (CWM) of acquisitive traits of dominant species (biomass-ratio hypothesis) in the remaining tree community. We analysed data from a long-term forest-management experiment in the Brazilian Amazon over two recovery periods: post-logging (1983?1989) and post-thinning (1995?2012). We computed the ΔAGB of surviving trees, recruit trees and of the total tree community. Disturbance intensity was quantified as basal area reduction and basal area remaining. Remaining diversity (taxonomic, functional and structural) and CWM of five functional traits linked to biomass productivity (specific leaf area, leaf nitrogen and phosphorous concentration, leaf toughness and wood density) were calculated for the post-intervention inventories. Predictors were related to response variables using multiple linear regressions and structural equation modelling. We found support for the disturbance hypothesis in both recovery periods. AGB increment of survivors and of the total tree community increased with basal area remaining, indicating the importance of remaining growing stock for biomass recovery. Conversely, AGB increment of recruit trees increased with basal area reduction because changes in forest structure increased resource availability for young trees. We did not find consistent support for the niche-complementarity and biomass-ratio hypotheses, possibly because of a high redundancy in these extremely species-rich forests Synthesis and applications. The intensity of disturbance through management, expressed as basal area reduction and basal area remaining, was consistently more important for explaining forest biomass recovery following harvesting and thinning than remaining diversity or trait composition. This points to the importance of controlling logging and thinning intensity in forests of the eastern Amazon. Given the high intervention intensities applied in this experiment, it is likely that low to moderate harvesting intensities permitted by the current legislation for the Brazilian Amazon (30 m³/ha) will not impair biomass recovery in these forests MenosForest recovery following management interventions is important to maintain ecosystem functioning and the provision of ecosystem services. It remains, however, largely unclear how above-ground biomass (AGB) recovery of species-rich tropical forests is affected by disturbance intensity and post-disturbance (remaining) tree-community attributes, following logging and thinning interventions. We investigated whether annual AGB increment (ΔAGB) decreases with management-related disturbance intensity (disturbance hypothesis), and increases with the diversity (niche-complementarity hypothesis) and the community-weighted mean (CWM) of acquisitive traits of dominant species (biomass-ratio hypothesis) in the remaining tree community. We analysed data from a long-term forest-management experiment in the Brazilian Amazon over two recovery periods: post-logging (1983?1989) and post-thinning (1995?2012). We computed the ΔAGB of surviving trees, recruit trees and of the total tree community. Disturbance intensity was quantified as basal area reduction and basal area remaining. Remaining diversity (taxonomic, functional and structural) and CWM of five functional traits linked to biomass productivity (specific leaf area, leaf nitrogen and phosphorous concentration, leaf toughness and wood density) were calculated for the post-intervention inventories. Predictors were related to response variables using multiple linear regressions and structural equation modelling. We found support ... Mostrar Tudo |
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Thesagro: |
Biomassa; Floresta. |
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Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/179053/1/1365-2664.13134.pdf
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Marc: |
LEADER 03548naa a2200265 a 4500
001 2092827
005 2018-06-28
008 2018 bl uuuu u00u1 u #d
024 7 $a10.1111/1365-2664.13134$2DOI
100 1 $aAVILA, A. L. de
245 $aDisturbance intensity is a stronger driver of biomass recovery than remaining tree-community attributes in a managed Amazonian forest.$h[electronic resource]
260 $c2018
520 $aForest recovery following management interventions is important to maintain ecosystem functioning and the provision of ecosystem services. It remains, however, largely unclear how above-ground biomass (AGB) recovery of species-rich tropical forests is affected by disturbance intensity and post-disturbance (remaining) tree-community attributes, following logging and thinning interventions. We investigated whether annual AGB increment (ΔAGB) decreases with management-related disturbance intensity (disturbance hypothesis), and increases with the diversity (niche-complementarity hypothesis) and the community-weighted mean (CWM) of acquisitive traits of dominant species (biomass-ratio hypothesis) in the remaining tree community. We analysed data from a long-term forest-management experiment in the Brazilian Amazon over two recovery periods: post-logging (1983?1989) and post-thinning (1995?2012). We computed the ΔAGB of surviving trees, recruit trees and of the total tree community. Disturbance intensity was quantified as basal area reduction and basal area remaining. Remaining diversity (taxonomic, functional and structural) and CWM of five functional traits linked to biomass productivity (specific leaf area, leaf nitrogen and phosphorous concentration, leaf toughness and wood density) were calculated for the post-intervention inventories. Predictors were related to response variables using multiple linear regressions and structural equation modelling. We found support for the disturbance hypothesis in both recovery periods. AGB increment of survivors and of the total tree community increased with basal area remaining, indicating the importance of remaining growing stock for biomass recovery. Conversely, AGB increment of recruit trees increased with basal area reduction because changes in forest structure increased resource availability for young trees. We did not find consistent support for the niche-complementarity and biomass-ratio hypotheses, possibly because of a high redundancy in these extremely species-rich forests Synthesis and applications. The intensity of disturbance through management, expressed as basal area reduction and basal area remaining, was consistently more important for explaining forest biomass recovery following harvesting and thinning than remaining diversity or trait composition. This points to the importance of controlling logging and thinning intensity in forests of the eastern Amazon. Given the high intervention intensities applied in this experiment, it is likely that low to moderate harvesting intensities permitted by the current legislation for the Brazilian Amazon (30 m³/ha) will not impair biomass recovery in these forests
650 $aBiomassa
650 $aFloresta
700 1 $aSANDE, M. T. van der
700 1 $aDORMANN, C. F.
700 1 $aPEÑA-CLAROS, M.
700 1 $aPOORTER, L.
700 1 $aFREITAS, L. J. M. de
700 1 $aRUSCHEL, A. R.
700 1 $aSILVA, J. N. M.
700 1 $aCARVALHO, J. O. P. de
700 1 $aBAUHUS, J.
773 $tJournal of Applied Ecology$gv. 55, n. 4, p. 1647-1657, July 2018.
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Embrapa Amazônia Oriental (CPATU) |
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