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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: |
11/09/2020 |
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Data da última atualização: |
11/09/2020 |
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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.; CANETTI, A.; PÉLLICO NETTO, S. |
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Afiliação: |
Rafaella De Angeli Curto, UFRJ; PATRICIA POVOA DE MATTOS, CNPF; EVALDO MUNOZ BRAZ, CNPF; Aline Canetti, Consultora florestal; Sylvio Péllico Netto, UFPR. |
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Título: |
Effectiveness of competition indices for understanding growth in an overstocked stand. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Forest Ecology and Management , v. 477, 118472, 2020. 11 p. |
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DOI: |
https://doi.org/10.1016/j.foreco.2020.118472 |
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Idioma: |
Inglês |
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Conteúdo: |
The objective of this study was to select and discuss indices to explain competition among trees in an unmanaged stand in order to support decision-making in forest management. The work was carried out in a plantation of Araucaria angustifolia (Bertol.) Kuntze located in a national forest in southern Brazil. The plantation was established in 1946 in 2 × 2 m spacing, with only one thinning that happened sometime between 1970 and 1980. Forty-six sample plots were established using an adaptation of the Prodan method. We tested distance-independent and distance-dependent competition indices that included or excluded crown area variables. An equation was generated to describe the relation between diameter at breast height and crown diameter, since these were highly correlated (r = 0.87); this permitted calculation of the growth space required for the trees in the stand. It is important to carefully choose the variables and competition indices to be tested in each study case. Including crown variables did not improve prediction ability to overcome the performance of the Stage distance-independent index. In general, the distance-independent indices performed better than the distance-dependent ones, even the stand arrangement in our study area was modified through thinning, mortality, and natural regeneration. When the goal is to better understand the ecological significance of a competition index and not only its statistical ability to predict short-term growth, simpler indices are recommended. MenosThe objective of this study was to select and discuss indices to explain competition among trees in an unmanaged stand in order to support decision-making in forest management. The work was carried out in a plantation of Araucaria angustifolia (Bertol.) Kuntze located in a national forest in southern Brazil. The plantation was established in 1946 in 2 × 2 m spacing, with only one thinning that happened sometime between 1970 and 1980. Forty-six sample plots were established using an adaptation of the Prodan method. We tested distance-independent and distance-dependent competition indices that included or excluded crown area variables. An equation was generated to describe the relation between diameter at breast height and crown diameter, since these were highly correlated (r = 0.87); this permitted calculation of the growth space required for the trees in the stand. It is important to carefully choose the variables and competition indices to be tested in each study case. Including crown variables did not improve prediction ability to overcome the performance of the Stage distance-independent index. In general, the distance-independent indices performed better than the distance-dependent ones, even the stand arrangement in our study area was modified through thinning, mortality, and natural regeneration. When the goal is to better understand the ecological significance of a competition index and not only its statistical ability to predict short-term growth, simpler indices are... Mostrar Tudo |
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Palavras-Chave: |
Growing space; Manejo florestal. |
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Thesagro: |
Araucária Angustifólia; Crescimento; Espécie Nativa; Pinheiro do Paraná. |
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Thesaurus Nal: |
Forest management. |
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Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
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Marc: |
LEADER 02330naa a2200265 a 4500
001 2124864
005 2020-09-11
008 2020 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.foreco.2020.118472$2DOI
100 1 $aCURTO, R. De A.
245 $aEffectiveness of competition indices for understanding growth in an overstocked stand.$h[electronic resource]
260 $c2020
520 $aThe objective of this study was to select and discuss indices to explain competition among trees in an unmanaged stand in order to support decision-making in forest management. The work was carried out in a plantation of Araucaria angustifolia (Bertol.) Kuntze located in a national forest in southern Brazil. The plantation was established in 1946 in 2 × 2 m spacing, with only one thinning that happened sometime between 1970 and 1980. Forty-six sample plots were established using an adaptation of the Prodan method. We tested distance-independent and distance-dependent competition indices that included or excluded crown area variables. An equation was generated to describe the relation between diameter at breast height and crown diameter, since these were highly correlated (r = 0.87); this permitted calculation of the growth space required for the trees in the stand. It is important to carefully choose the variables and competition indices to be tested in each study case. Including crown variables did not improve prediction ability to overcome the performance of the Stage distance-independent index. In general, the distance-independent indices performed better than the distance-dependent ones, even the stand arrangement in our study area was modified through thinning, mortality, and natural regeneration. When the goal is to better understand the ecological significance of a competition index and not only its statistical ability to predict short-term growth, simpler indices are recommended.
650 $aForest management
650 $aAraucária Angustifólia
650 $aCrescimento
650 $aEspécie Nativa
650 $aPinheiro do Paraná
653 $aGrowing space
653 $aManejo florestal
700 1 $aMATTOS, P. P. de
700 1 $aBRAZ, E. M.
700 1 $aCANETTI, A.
700 1 $aPÉLLICO NETTO, S.
773 $tForest Ecology and Management$gv. 477, 118472, 2020. 11 p.
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Registro original: |
Embrapa Florestas (CNPF) |
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| Registros recuperados : 207 | |
| 108. |  | LAMBRECHT, F. R.; MATTOS, P. P. de; BRAZ, E. M.; DOMENE, V. D. Incremento diamétrico de Tabebuia aurea e Qualea parviflora, nativas do Cerrado. In: SIMPÓSIO NACIONAL DE INVENTÁRIO FLORESTAL, 3., 2014, Manaus. Anais... Brasília, DF: Serviço Florestal Brasileiro, 2014. p. 89. Disponível online. Resumo.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Florestas. |
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| 113. | | SELLE, G. L.; FLEIG, F. D.; VUADEN, E.; ALBERNARD, L. A. J. de; BRAZ, E. M. Índices de sítios para Hovenia dulcis Thunberg na região central do estado do Rio Grande do Sul, Brasil. Ciência Florestal, Santa Maria, v. 19, n. 4, p. 407-423, jul./set. 2009.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 1 |
| Biblioteca(s): Embrapa Florestas. |
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| 115. | | CURTO, R.; MATTOS, P. P. de; BRAZ, E. M.; PELLICO NETTO, S.; ZACHOW, R. Longitudinal and radial variation of the wood density in an unmanaged stand of Araucaria angustifolia. The International Forestry Review, v. 16, n. 5, p. 406, 2014. Edição dos abstracts do 24º IUFRO World Congress, 2014, Salt Lake City. Sustaining forests, sustaining people: the role of research.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Florestas. |
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| 118. | | GARRASTAZU, M. C.; MATTOS, P. P. de; CANETTI, A.; BRAZ, E. M.; BASSO, R. O. Relação entre potencial de ocorrência ambiental e abundância de espécies florestais no Mato Grosso. In: CONGRESSO FLORESTAL DE MATO GROSSO, 1.; SIMPÓSIO DE PÓS-GRADUAÇÃO EM CIÊNCIAS AMBIENTAIS E FLORESTAIS, 5.; SEMANA ACADÊMICA DE ENGENHARIA FLORESTAL - UFMT/Sinop, 5., 2015, Sinop. Anais. Sinop: UFMT, 2015. 1 p. Disponível online. Resumo. Seção: Manejo florestal.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Florestas. |
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| Registros recuperados : 207 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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