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 | Acesso ao texto completo restrito à biblioteca da Embrapa Florestas. Para informações adicionais entre em contato com cnpf.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
11/02/2021 |
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Data da última atualização: |
11/02/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
CURTO, R. De A.; MATTOS, P. P. de; BRAZ, E. M.; PÉLLICO NETTO, S. |
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Afiliação: |
Rafaella De Angeli Curto, Universidade Federal Rural do Rio de Janeiro; PATRICIA POVOA DE MATTOS, CNPF; EVALDO MUNOZ BRAZ, CNPF; Sylvio Péllico Netto, UFPR. |
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Título: |
Growth and retrospective analysis of competition in an overstocked stand of Araucaria angustifolia. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
Forest Ecology and Management, v. 483, 118766, Mar. 2021. 10 p. |
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DOI: |
https://doi.org/10.1016/j.foreco.2020.118766 |
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Idioma: |
Inglês |
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Conteúdo: |
The objective of this work was to recover growth patterns in an over-stocked stand of trees, using a stand of Araucaria angustifolia as a case study to develop an understanding of tree development over the long term. This will be useful in planning silvicultural intervention and in the management of new plantation of this species. An overstocked stand of Araucaria angustifolia (Bertol.) Kuntze was evaluated in Campo Largo, Paran´a, Brazil, in the National Forest of Açungui. At the time of the study, it was 65 years old and had been through a single thinning. The area was sampled using circle plots defined by a modified Prodan method, using 46 trees in three development classes (DC) were defined as sampling plot centers: DC-1 (10 ? dbh < 30 cm), DC-2 (30 ? dbh < 50 cm) and DC-3 (50 ? dbh < 70 cm). Fourteen disc samples were obtained from each plot center tree and increment core samples were obtained from competing trees, totalizing in 296 trees sampled. The trees presented similar increment in the first 5 years. At 10 years the DC-3 trees presented higher growth than the others, indicating when the first thinning should be performed. The two smaller classes (DC-1 and DC-2) presented growth differentiation only after 20 years, suggesting that thinning during this period could have been successful. The DC-3 trees showed an increment greater than twice of that observed in DC-1 trees for those trees in the diametric class of 10 to 20 cm. The average increment stabilized even in the largest trees (DC-3) from 40 cm in dbh. The suggested procedure, using a competition index and dendrochronological analysis, allowed for the identification of growth patterns in overstocked stands. Analysis using dendrochronology and competition index allowed better understanding of the growth rate of an unmanaged stand. In our case study, these patterns made it possible to identify the correct period for the first thinning. These results will provide a useful basis for management of future A. angustifolia plantations. MenosThe objective of this work was to recover growth patterns in an over-stocked stand of trees, using a stand of Araucaria angustifolia as a case study to develop an understanding of tree development over the long term. This will be useful in planning silvicultural intervention and in the management of new plantation of this species. An overstocked stand of Araucaria angustifolia (Bertol.) Kuntze was evaluated in Campo Largo, Paran´a, Brazil, in the National Forest of Açungui. At the time of the study, it was 65 years old and had been through a single thinning. The area was sampled using circle plots defined by a modified Prodan method, using 46 trees in three development classes (DC) were defined as sampling plot centers: DC-1 (10 ? dbh < 30 cm), DC-2 (30 ? dbh < 50 cm) and DC-3 (50 ? dbh < 70 cm). Fourteen disc samples were obtained from each plot center tree and increment core samples were obtained from competing trees, totalizing in 296 trees sampled. The trees presented similar increment in the first 5 years. At 10 years the DC-3 trees presented higher growth than the others, indicating when the first thinning should be performed. The two smaller classes (DC-1 and DC-2) presented growth differentiation only after 20 years, suggesting that thinning during this period could have been successful. The DC-3 trees showed an increment greater than twice of that observed in DC-1 trees for those trees in the diametric class of 10 to 20 cm. The average increment stabilized even in t... Mostrar Tudo |
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Palavras-Chave: |
Dendrocronologia; Growth pattern; Manejo florestal; Padrão de crescimento; Thinning. |
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Thesagro: |
Araucária Angustifólia; Espécie Nativa; Pinheiro do Paraná. |
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Thesaurus Nal: |
Dendrochronology; Forest management. |
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Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
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Marc: |
LEADER 02944naa a2200289 a 4500
001 2129986
005 2021-02-11
008 2021 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.foreco.2020.118766$2DOI
100 1 $aCURTO, R. De A.
245 $aGrowth and retrospective analysis of competition in an overstocked stand of Araucaria angustifolia.$h[electronic resource]
260 $c2021
520 $aThe objective of this work was to recover growth patterns in an over-stocked stand of trees, using a stand of Araucaria angustifolia as a case study to develop an understanding of tree development over the long term. This will be useful in planning silvicultural intervention and in the management of new plantation of this species. An overstocked stand of Araucaria angustifolia (Bertol.) Kuntze was evaluated in Campo Largo, Paran´a, Brazil, in the National Forest of Açungui. At the time of the study, it was 65 years old and had been through a single thinning. The area was sampled using circle plots defined by a modified Prodan method, using 46 trees in three development classes (DC) were defined as sampling plot centers: DC-1 (10 ? dbh < 30 cm), DC-2 (30 ? dbh < 50 cm) and DC-3 (50 ? dbh < 70 cm). Fourteen disc samples were obtained from each plot center tree and increment core samples were obtained from competing trees, totalizing in 296 trees sampled. The trees presented similar increment in the first 5 years. At 10 years the DC-3 trees presented higher growth than the others, indicating when the first thinning should be performed. The two smaller classes (DC-1 and DC-2) presented growth differentiation only after 20 years, suggesting that thinning during this period could have been successful. The DC-3 trees showed an increment greater than twice of that observed in DC-1 trees for those trees in the diametric class of 10 to 20 cm. The average increment stabilized even in the largest trees (DC-3) from 40 cm in dbh. The suggested procedure, using a competition index and dendrochronological analysis, allowed for the identification of growth patterns in overstocked stands. Analysis using dendrochronology and competition index allowed better understanding of the growth rate of an unmanaged stand. In our case study, these patterns made it possible to identify the correct period for the first thinning. These results will provide a useful basis for management of future A. angustifolia plantations.
650 $aDendrochronology
650 $aForest management
650 $aAraucária Angustifólia
650 $aEspécie Nativa
650 $aPinheiro do Paraná
653 $aDendrocronologia
653 $aGrowth pattern
653 $aManejo florestal
653 $aPadrão de crescimento
653 $aThinning
700 1 $aMATTOS, P. P. de
700 1 $aBRAZ, E. M.
700 1 $aPÉLLICO NETTO, S.
773 $tForest Ecology and Management$gv. 483, 118766, Mar. 2021. 10 p.
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Registro original: |
Embrapa Florestas (CNPF) |
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Registro |
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Registro Completo
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
29/01/2008 |
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Data da última atualização: |
25/02/2015 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
Nacional - A |
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Autoria: |
CUNICO, M. M.; CARVALHO, J. L. S.; ANDRADE, C. A.; MIGUEL, O. G.; MIGUEL, M. D.; AUER, C. G.; GRIGOLETTI JÚNIOR, A.; CÔCCO, L. C.; YAMAMOTO, C. I. |
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Afiliação: |
Celso Garcia Auer, Embrapa Florestas; Albino Grigoletti Júnior, Embrapa Florestas. |
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Título: |
Atividade antifúngica de extratos brutos de Ottonia martiana Miq., Piperaceae. |
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Ano de publicação: |
2006 |
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Fonte/Imprenta: |
Visão Acadêmica, Curitiba, v.7, n. 2, p. 53-60, jul./dez. 2006. |
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Idioma: |
Português |
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Conteúdo: |
A produção de alimentos orgânicos baseia-se em produtos naturais ou extratos de plantas para o controle de pragas e doenças. A busca por produtos naturais é um trabalho constante para que haja uma grande variedade à disposição dos produtores rurais, uma vez que não é permitido o emprego de fungicidas sintéticos para o cultivo de espécies medicinais utilizados nas indústrias de fitoterápicos assim como de alimentos. Este estudo objetivou a atividade antifúngica de extratos brutos etanólicos e aquosos de Ottonia martiana contra os fitopatógenos Fusarium oxysporum, Colletotrichum acutatum, Rhizoctonia sp. Avaliou-se o efeito dos extratos sobre o crescimento micelial in vitro. Verificou-se a redução do crescimento micelial de todos os fungos e a maior atividade foi produzida pelo extrato bruto etanólico das raízes de O. martiana. |
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Palavras-Chave: |
Controle alternativo; Ottonnia martiana; Patógeno de planta. |
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Thesagro: |
Anestesia; Planta Medicinal. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/32786/1/atividade-antifungica-de-extratos-brutos-de-ottonia-martiana.pdf
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Marc: |
LEADER 01670naa a2200277 a 4500
001 1308500
005 2015-02-25
008 2006 bl uuuu u00u1 u #d
100 1 $aCUNICO, M. M.
245 $aAtividade antifúngica de extratos brutos de Ottonia martiana Miq., Piperaceae.$h[electronic resource]
260 $c2006
520 $aA produção de alimentos orgânicos baseia-se em produtos naturais ou extratos de plantas para o controle de pragas e doenças. A busca por produtos naturais é um trabalho constante para que haja uma grande variedade à disposição dos produtores rurais, uma vez que não é permitido o emprego de fungicidas sintéticos para o cultivo de espécies medicinais utilizados nas indústrias de fitoterápicos assim como de alimentos. Este estudo objetivou a atividade antifúngica de extratos brutos etanólicos e aquosos de Ottonia martiana contra os fitopatógenos Fusarium oxysporum, Colletotrichum acutatum, Rhizoctonia sp. Avaliou-se o efeito dos extratos sobre o crescimento micelial in vitro. Verificou-se a redução do crescimento micelial de todos os fungos e a maior atividade foi produzida pelo extrato bruto etanólico das raízes de O. martiana.
650 $aAnestesia
650 $aPlanta Medicinal
653 $aControle alternativo
653 $aOttonnia martiana
653 $aPatógeno de planta
700 1 $aCARVALHO, J. L. S.
700 1 $aANDRADE, C. A.
700 1 $aMIGUEL, O. G.
700 1 $aMIGUEL, M. D.
700 1 $aAUER, C. G.
700 1 $aGRIGOLETTI JÚNIOR, A.
700 1 $aCÔCCO, L. C.
700 1 $aYAMAMOTO, C. I.
773 $tVisão Acadêmica, Curitiba$gv.7, n. 2, p. 53-60, jul./dez. 2006.
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