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![](/consulta/web/img/deny.png) | Acesso ao texto completo restrito à biblioteca da Embrapa Acre. Para informações adicionais entre em contato com cpafac.biblioteca@embrapa.br. |
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Biblioteca(s): |
Embrapa Acre. |
Data corrente: |
10/08/2021 |
Data da última atualização: |
19/11/2021 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
PIRES, S. A. de O.; MENDONÇA, A. R. de; SILVA, G. F. da; OLIVEIRA, M. V. N. d'; OLIVEIRA, L. C. de; SILVA, J. P. M.; SILVA, E. F. da. |
Afiliação: |
SANDRA AGUIAR DE OLIVEIRA PIRES, Universidade Federal do Espírito Santo (UFES); ADRIANO RIBEIRO DE MENDONÇA, Universidade Federal do Espírito Santo (UFES); GILSON FERNANDES DA SILVA, Universidade Federal do Espírito Santo (UFES); MARCUS VINICIO NEVES D OLIVEIRA, CPAF-AC; LUIS CLAUDIO DE OLIVEIRA, CPAF-AC; JEFERSON PEREIRA MARTINS SILVA, Universidade Federal do Espírito Santo (UFES); EVANDRO FERREIRA DA SILVA, Universidade Federal do Pará (UFPA). |
Título: |
Growth modeling of Carapa guianensis and Tetragastris altissima for improved management in native forests in the Amazon. |
Ano de publicação: |
2021 |
Fonte/Imprenta: |
Ecological Modelling, v. 456, 109683, Sept. 2021. |
ISSN: |
0304-3800 |
DOI: |
https://doi.org/10.1016/j.ecolmodel.2021.109683 |
Idioma: |
Inglês |
Conteúdo: |
In forests of the Amazon biome, Sustainable Forest Management Plans are based on technical guidelines. Such legislation provides for a cutting cycle that can vary from 25 to 35 years and a minimum cutting diameter of 50 cm. In view of the above, the present research aimed to evaluate the accuracy of regression models for the projection of growth in diameter and to calculate the t by diametric class for trees of the species C. guianensis and T. altíssima. Four models with fixed effects were tested and best model was selected as the base model for the incorporation of random effects. The best fixed-effect model was Pienaar and Schiver. Thus, structures of variance and autocorrelation were added to this model to correct heteroscedasticity and autocorrelation. Finally, the time of passage for each species studied was calculated. The average annual increment in diameter estimated with the Pienaar and Schiver model with fixed effect was 0.38 cm.year-1 for C. guianensis and 0.46 cm.year-1 for T. altissima. Using the Pienaar and Schiver model with a random effect, the average annual diameter increase varied from 0.31 to 0.58 cm.year-1 for C. guianensis and from 0.37 to 0.65 mm.year-1 for T. altissima. Results showed that the estimated cutting cycle varied from 24 to 45 years for the species C. guianensis and from 21 to 38 years for the species T. altissima. Thus, using the cutting time of 25 to 35 years and a minimum cutting diameter of 50 cm for these species, can lead to incorrect decisions about the intensity of logging or the appropriate length of the cutting cycle. The growth and production models depict a synthesis of the growth dynamics of the forest, allowing to providing fundamental information for the definition of planning strategies, such as the establishment of a cutting cycle and an exploration intensity more compatible with the growth rate of the forest and for each species. MenosIn forests of the Amazon biome, Sustainable Forest Management Plans are based on technical guidelines. Such legislation provides for a cutting cycle that can vary from 25 to 35 years and a minimum cutting diameter of 50 cm. In view of the above, the present research aimed to evaluate the accuracy of regression models for the projection of growth in diameter and to calculate the t by diametric class for trees of the species C. guianensis and T. altíssima. Four models with fixed effects were tested and best model was selected as the base model for the incorporation of random effects. The best fixed-effect model was Pienaar and Schiver. Thus, structures of variance and autocorrelation were added to this model to correct heteroscedasticity and autocorrelation. Finally, the time of passage for each species studied was calculated. The average annual increment in diameter estimated with the Pienaar and Schiver model with fixed effect was 0.38 cm.year-1 for C. guianensis and 0.46 cm.year-1 for T. altissima. Using the Pienaar and Schiver model with a random effect, the average annual diameter increase varied from 0.31 to 0.58 cm.year-1 for C. guianensis and from 0.37 to 0.65 mm.year-1 for T. altissima. Results showed that the estimated cutting cycle varied from 24 to 45 years for the species C. guianensis and from 21 to 38 years for the species T. altissima. Thus, using the cutting time of 25 to 35 years and a minimum cutting diameter of 50 cm for th... Mostrar Tudo |
Palavras-Chave: |
Amazônia Ocidental; Análisis de regresión; Bosques primarios; Bosques tropicales; Breu; Crecimiento de planta; Embrapa Acre; Granjas de demostración; Manejo florestal; Modelos matemáticos; Rio Branco (AC); Tetragastris altissima; Western Amazon. |
Thesagro: |
Andiroba; Campo Experimental; Carapa Guianensis; Crescimento; Essência Florestal; Floresta Nativa; Regressão Linear. |
Thesaurus Nal: |
Demonstration farms; Forest management; Mathematical models; Plant growth; Primary forests; Regression analysis; Tropical forests. |
Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
Marc: |
LEADER 03542naa a2200541 a 4500 001 2133427 005 2021-11-19 008 2021 bl uuuu u00u1 u #d 022 $a0304-3800 024 7 $ahttps://doi.org/10.1016/j.ecolmodel.2021.109683$2DOI 100 1 $aPIRES, S. A. de O. 245 $aGrowth modeling of Carapa guianensis and Tetragastris altissima for improved management in native forests in the Amazon.$h[electronic resource] 260 $c2021 520 $aIn forests of the Amazon biome, Sustainable Forest Management Plans are based on technical guidelines. Such legislation provides for a cutting cycle that can vary from 25 to 35 years and a minimum cutting diameter of 50 cm. In view of the above, the present research aimed to evaluate the accuracy of regression models for the projection of growth in diameter and to calculate the t by diametric class for trees of the species C. guianensis and T. altíssima. Four models with fixed effects were tested and best model was selected as the base model for the incorporation of random effects. The best fixed-effect model was Pienaar and Schiver. Thus, structures of variance and autocorrelation were added to this model to correct heteroscedasticity and autocorrelation. Finally, the time of passage for each species studied was calculated. The average annual increment in diameter estimated with the Pienaar and Schiver model with fixed effect was 0.38 cm.year-1 for C. guianensis and 0.46 cm.year-1 for T. altissima. Using the Pienaar and Schiver model with a random effect, the average annual diameter increase varied from 0.31 to 0.58 cm.year-1 for C. guianensis and from 0.37 to 0.65 mm.year-1 for T. altissima. Results showed that the estimated cutting cycle varied from 24 to 45 years for the species C. guianensis and from 21 to 38 years for the species T. altissima. Thus, using the cutting time of 25 to 35 years and a minimum cutting diameter of 50 cm for these species, can lead to incorrect decisions about the intensity of logging or the appropriate length of the cutting cycle. The growth and production models depict a synthesis of the growth dynamics of the forest, allowing to providing fundamental information for the definition of planning strategies, such as the establishment of a cutting cycle and an exploration intensity more compatible with the growth rate of the forest and for each species. 650 $aDemonstration farms 650 $aForest management 650 $aMathematical models 650 $aPlant growth 650 $aPrimary forests 650 $aRegression analysis 650 $aTropical forests 650 $aAndiroba 650 $aCampo Experimental 650 $aCarapa Guianensis 650 $aCrescimento 650 $aEssência Florestal 650 $aFloresta Nativa 650 $aRegressão Linear 653 $aAmazônia Ocidental 653 $aAnálisis de regresión 653 $aBosques primarios 653 $aBosques tropicales 653 $aBreu 653 $aCrecimiento de planta 653 $aEmbrapa Acre 653 $aGranjas de demostración 653 $aManejo florestal 653 $aModelos matemáticos 653 $aRio Branco (AC) 653 $aTetragastris altissima 653 $aWestern Amazon 700 1 $aMENDONÇA, A. R. de 700 1 $aSILVA, G. F. da 700 1 $aOLIVEIRA, M. V. N. d' 700 1 $aOLIVEIRA, L. C. de 700 1 $aSILVA, J. P. M. 700 1 $aSILVA, E. F. da 773 $tEcological Modelling$gv. 456, 109683, Sept. 2021.
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Embrapa Acre (CPAF-AC) |
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Biblioteca(s): |
Embrapa Algodão. |
Data corrente: |
27/10/2000 |
Data da última atualização: |
02/02/2021 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
CARVALHO, L. P. de; CRUZ, C. D.; MORAIS, C. F. de; LIMA, E. F. |
Afiliação: |
LUIZ PAULO DE CARVALHO, CNPA; Cosme Damião Cruz, Universidade Federal de Viçosa; Carlos Floriano de Morais, Universidade Federal de Viçosa; EMIDIO FERREIRA LIMA, CNPA. |
Título: |
Hereditariedade da resistência do algodoeiro à ramlose causada por Colletotrichum gossypie south var.cephalosperioides A. S. Costa. |
Ano de publicação: |
1994 |
Fonte/Imprenta: |
Revista Ceres, v. 41, p. 254-262, 1994. |
Idioma: |
Português |
Conteúdo: |
Resumo: Determinou-se a herança da resistência de cultivares e híbridos de algodão à ramulose causada pelo fungo Colletotrichum gossypii South v. cephalosporioides. Foi evidenciado que a susceptibilidade é controlada por genes dominantes e que, possivelmente, o caráter é regulado por mais de um gene, além da ação de modificadores. Não se detectou efeito de fatores genéticos extranucleares e constatou-se que a influência do ambiente na variação fenotípica é reduzida. |
Palavras-Chave: |
Ramulose. |
Thesagro: |
Algodão; Doença; Gossypium Hirsutum. |
Thesaurus NAL: |
Colletotrichum; Cotton. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/220842/1/14.-Hereditariedade-da-resiste770ncia-otimizada.pdf
|
Marc: |
LEADER 01164naa a2200229 a 4500 001 1271513 005 2021-02-02 008 1994 bl uuuu u00u1 u #d 100 1 $aCARVALHO, L. P. de 245 $aHereditariedade da resistência do algodoeiro à ramlose causada por Colletotrichum gossypie south var.cephalosperioides A. S. Costa.$h[electronic resource] 260 $c1994 520 $aResumo: Determinou-se a herança da resistência de cultivares e híbridos de algodão à ramulose causada pelo fungo Colletotrichum gossypii South v. cephalosporioides. Foi evidenciado que a susceptibilidade é controlada por genes dominantes e que, possivelmente, o caráter é regulado por mais de um gene, além da ação de modificadores. Não se detectou efeito de fatores genéticos extranucleares e constatou-se que a influência do ambiente na variação fenotípica é reduzida. 650 $aColletotrichum 650 $aCotton 650 $aAlgodão 650 $aDoença 650 $aGossypium Hirsutum 653 $aRamulose 700 1 $aCRUZ, C. D. 700 1 $aMORAIS, C. F. de 700 1 $aLIMA, E. F. 773 $tRevista Ceres$gv. 41, p. 254-262, 1994.
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