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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: |
01/10/2015 |
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Data da última atualização: |
30/05/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
AVILA, A. L. de; RUSCHEL, A. R.; CARVALHO, J. O. P. de; MAZZEI, L.; SILVA, J. N. M.; LOPES, J. do C.; ARAUJO, M. M.; DORMANN, C. F.; BAUHUS, J. |
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Afiliação: |
Angela Luciana de Avila, University of Freiburg; ADEMIR ROBERTO RUSCHEL, CPATU; João Olegário Pereira de Carvalho, UFRA; LUCAS JOSE MAZZEI DE FREITAS, CPATU; José Natalino Macedo Silva, UFRA; JOSE DO CARMO ALVES LOPES, CPATU; Maristela Machado Araujo, UFSM; Carsten F. Dormann, University of Freiburg; Jürgen Bauhus, University of Freiburg. |
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Título: |
Medium-term dynamics of tree species composition in response to silvicultural intervention intensities in a tropical rain forest. |
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Ano de publicação: |
2015 |
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Fonte/Imprenta: |
Biological Conservation, v. 191, p. 577-586, Nov. 2015. |
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DOI: |
http://dx.doi.org/10.1016/j.biocon.2015.08.004 |
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Idioma: |
Inglês |
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Conteúdo: |
Managed forests are important landscape components in tropical regions and may contribute to biodiversity conservation. Yet, managing tropical forests sustainably requires an understanding of ecosystem responses to silvicultural interventions. We investigated how silvicultural intervention intensity affects tree species composition and diversity over 30 years in the Brazilian Amazon by comparing them to pre-logging conditions and to an unlogged control. The interventions comprised logging in 1982 and thinning in 1993?1994 and ranged in intensity from 19 to 53% reduction in the original basal area (BA). Trees with a diameter at breast height (DBH) ≥ 5 cm were measured on eight occasions in 41 permanent sample plots of 0.25 ha each. Silvicultural intervention intensity influenced both tree species composition and its trajectory within 30 years. In contrast, tree species diversity was not impaired. High intervention intensities (with BA reduction > 6.6 m2 ha− 1) had a substantial influence on the community of trees (DBH ≥ 10 cm), which did not show signs of return to pre-logging species composition. The reduction of BA through harvesting damage and thinning had a stronger effect on species composition than logging of mature trees itself. Thus, damage should be kept to a minimal level and strong thinning interventions should be avoided. This may enhance ecosystem recovery and maintenance of biodiversity at other trophic levels. Since current permitted harvesting intensities in the Brazilian Amazon are lower than the lowest intensity examined in our study, legal harvesting practices are unlikely to cause substantial, long-term changes in tree species composition. MenosManaged forests are important landscape components in tropical regions and may contribute to biodiversity conservation. Yet, managing tropical forests sustainably requires an understanding of ecosystem responses to silvicultural interventions. We investigated how silvicultural intervention intensity affects tree species composition and diversity over 30 years in the Brazilian Amazon by comparing them to pre-logging conditions and to an unlogged control. The interventions comprised logging in 1982 and thinning in 1993?1994 and ranged in intensity from 19 to 53% reduction in the original basal area (BA). Trees with a diameter at breast height (DBH) ≥ 5 cm were measured on eight occasions in 41 permanent sample plots of 0.25 ha each. Silvicultural intervention intensity influenced both tree species composition and its trajectory within 30 years. In contrast, tree species diversity was not impaired. High intervention intensities (with BA reduction > 6.6 m2 ha− 1) had a substantial influence on the community of trees (DBH ≥ 10 cm), which did not show signs of return to pre-logging species composition. The reduction of BA through harvesting damage and thinning had a stronger effect on species composition than logging of mature trees itself. Thus, damage should be kept to a minimal level and strong thinning interventions should be avoided. This may enhance ecosystem recovery and maintenance of biodiversity at other trophic levels. Since current permitted harvestin... Mostrar Tudo |
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Palavras-Chave: |
Diversidade; Exploração; Recuperação florestal. |
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Thesagro: |
Madeira. |
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Thesaurus Nal: |
Amazonia. |
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Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
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Marc: |
LEADER 02601naa a2200289 a 4500
001 2025610
005 2022-05-30
008 2015 bl uuuu u00u1 u #d
024 7 $ahttp://dx.doi.org/10.1016/j.biocon.2015.08.004$2DOI
100 1 $aAVILA, A. L. de
245 $aMedium-term dynamics of tree species composition in response to silvicultural intervention intensities in a tropical rain forest.$h[electronic resource]
260 $c2015
520 $aManaged forests are important landscape components in tropical regions and may contribute to biodiversity conservation. Yet, managing tropical forests sustainably requires an understanding of ecosystem responses to silvicultural interventions. We investigated how silvicultural intervention intensity affects tree species composition and diversity over 30 years in the Brazilian Amazon by comparing them to pre-logging conditions and to an unlogged control. The interventions comprised logging in 1982 and thinning in 1993?1994 and ranged in intensity from 19 to 53% reduction in the original basal area (BA). Trees with a diameter at breast height (DBH) ≥ 5 cm were measured on eight occasions in 41 permanent sample plots of 0.25 ha each. Silvicultural intervention intensity influenced both tree species composition and its trajectory within 30 years. In contrast, tree species diversity was not impaired. High intervention intensities (with BA reduction > 6.6 m2 ha− 1) had a substantial influence on the community of trees (DBH ≥ 10 cm), which did not show signs of return to pre-logging species composition. The reduction of BA through harvesting damage and thinning had a stronger effect on species composition than logging of mature trees itself. Thus, damage should be kept to a minimal level and strong thinning interventions should be avoided. This may enhance ecosystem recovery and maintenance of biodiversity at other trophic levels. Since current permitted harvesting intensities in the Brazilian Amazon are lower than the lowest intensity examined in our study, legal harvesting practices are unlikely to cause substantial, long-term changes in tree species composition.
650 $aAmazonia
650 $aMadeira
653 $aDiversidade
653 $aExploração
653 $aRecuperação florestal
700 1 $aRUSCHEL, A. R.
700 1 $aCARVALHO, J. O. P. de
700 1 $aMAZZEI, L.
700 1 $aSILVA, J. N. M.
700 1 $aLOPES, J. do C.
700 1 $aARAUJO, M. M.
700 1 $aDORMANN, C. F.
700 1 $aBAUHUS, J.
773 $tBiological Conservation$gv. 191, p. 577-586, Nov. 2015.
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Embrapa Amazônia Oriental (CPATU) |
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| Acesso ao texto completo restrito à biblioteca da Embrapa Semiárido. Para informações adicionais entre em contato com cpatsa.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Semiárido. |
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Data corrente: |
30/08/2005 |
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Data da última atualização: |
03/07/2023 |
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Tipo da produção científica: |
Folder/Folheto/Cartilha |
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Autoria: |
AGUIAR, P. A. A. |
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Afiliação: |
PAULO ANSELMO ANDRADE AGUIAR, CPATSA. |
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Título: |
O sorgo e o milho na região Semi-Árida. |
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Ano de publicação: |
1982 |
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Fonte/Imprenta: |
Petrolina: EMBRAPA-CPATSA, 1982. |
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Páginas: |
17 p. |
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Idioma: |
Português |
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Notas: |
Trabalho apresentado no 1º Simpósio Brasileiro do Trópico Semi-Árido, Olinda, PE, agosto de 1982. |
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Conteúdo: |
O sorgo (Sorghum bicolor L.) Moench) é uma cultura bastante promissora para as condições edafo-climáticas do Nordeste do Brasil, embora o volume de produção seja ainda muito pequeno nesta região, esta cultura tem sido explorada intensivamente e com um bom comportamento em outras partes do mundo com condições ecológicas similares. |
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Palavras-Chave: |
Região semiárida; Trópico semi-árido. |
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Thesagro: |
Milho; Produção Agrícola; Sistema de Cultivo; Sorghum Bicolor; Sorgo. |
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Thesaurus NAL: |
Sorghum bicolor subsp. bicolor. |
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Categoria do assunto: |
A Sistemas de Cultivo |
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Marc: |
LEADER 01026nam a2200229 a 4500
001 1155919
005 2023-07-03
008 1982 bl uuuu u0uu1 u #d
100 1 $aAGUIAR, P. A. A.
245 $aO sorgo e o milho na região Semi-Árida.
260 $aPetrolina: EMBRAPA-CPATSA$c1982
300 $a17 p.
500 $aTrabalho apresentado no 1º Simpósio Brasileiro do Trópico Semi-Árido, Olinda, PE, agosto de 1982.
520 $aO sorgo (Sorghum bicolor L.) Moench) é uma cultura bastante promissora para as condições edafo-climáticas do Nordeste do Brasil, embora o volume de produção seja ainda muito pequeno nesta região, esta cultura tem sido explorada intensivamente e com um bom comportamento em outras partes do mundo com condições ecológicas similares.
650 $aSorghum bicolor subsp. bicolor
650 $aMilho
650 $aProdução Agrícola
650 $aSistema de Cultivo
650 $aSorghum Bicolor
650 $aSorgo
653 $aRegião semiárida
653 $aTrópico semi-árido
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