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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: |
21/01/2022 |
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Data da última atualização: |
21/01/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
FERREIRA, T. M. C.; CARVALHO, J. O. P. de; EMMERT, F.; RUSCHEL, A. R.; NASCIMENTO, R. G. M. |
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Afiliação: |
THAMIRES MENDES COELHO FERREIRA, UFRA; JOÃO OLEGÁRIO PEREIRA DE CARVALHO, UFRA; FABIANO EMMERT, UFRA; ADEMIR ROBERTO RUSCHEL, CPATU; RODRIGO GERONI MENDES NASCIMENTO, UFRA. |
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Título: |
How long does the Amazon rainforest take to grow commercially sized trees? An estimation methodology for Manilkara elata (Allemão ex Miq.) Monach. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Forest Ecology and Management, v. 473, Article 118333, Oct. 2020. |
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DOI: |
https://doi.org/10.1016/j.foreco.2020.118333 |
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Idioma: |
Inglês |
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Conteúdo: |
It is important to know the growth rate of the species to be managed to establish sustainable forest management plans because from this information, it is possible to know which species have reached the minimum commercial size to be collected in future harvests. Manilkara elata (Allemão ex Miq.) Monach is considered one of the most commercialized timber tree species, both inside and outside of Brazil. Thus, the objective of this study was to model the growth rate and the time required for the trees of this species to reach the minimum cutting diameter defined by the current Brazilian legislation; the analysis was based on the adapted Weibull function with data from 31 years of monitoring in the National Forest of Brazil in Tapajós, Pará, Amazon, Brazil. Three models were proposed to estimate (i) the annual periodic increase in diameter (API), (ii) the future diameter (df) and (iii) the time period in years (t) that each tree would need to reach a future diameter according to the average growth rate of the target species and its forest community. Taken together, the data from the managed and unmanaged areas showed no statistically significant differences between the values observed and estimated by the proposed model when assessed with the Graybill F test. The adapted Weibull model performed well when estimating the annual periodic increment and future tree diameter of the M. elata population. Based on the diameter growth rate, the 5 cm diameter M. elata trees would require 601?781 years to reach the minimum commercial diameter of 50 cm, but the 40?49.9 cm diameter trees that are considered stock for the next harvest would take an average of 20 years to reach this commercial diameter. As the estimated average growth time is shorter than the cutting cycle prescribed by the legislation (25?35 years), it is recommended that forestry treatments that favor longer survival of M. elata individuals be adopted to achieve greater continuous production by primarily considering the long period that young individuals need to reach the cutting diameter. MenosIt is important to know the growth rate of the species to be managed to establish sustainable forest management plans because from this information, it is possible to know which species have reached the minimum commercial size to be collected in future harvests. Manilkara elata (Allemão ex Miq.) Monach is considered one of the most commercialized timber tree species, both inside and outside of Brazil. Thus, the objective of this study was to model the growth rate and the time required for the trees of this species to reach the minimum cutting diameter defined by the current Brazilian legislation; the analysis was based on the adapted Weibull function with data from 31 years of monitoring in the National Forest of Brazil in Tapajós, Pará, Amazon, Brazil. Three models were proposed to estimate (i) the annual periodic increase in diameter (API), (ii) the future diameter (df) and (iii) the time period in years (t) that each tree would need to reach a future diameter according to the average growth rate of the target species and its forest community. Taken together, the data from the managed and unmanaged areas showed no statistically significant differences between the values observed and estimated by the proposed model when assessed with the Graybill F test. The adapted Weibull model performed well when estimating the annual periodic increment and future tree diameter of the M. elata population. Based on the diameter growth rate, the 5 cm diameter M. elata trees would require 6... Mostrar Tudo |
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Palavras-Chave: |
Gestão florestal. |
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Thesagro: |
Floresta Tropical. |
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Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
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Marc: |
LEADER 02808naa a2200205 a 4500
001 2139247
005 2022-01-21
008 2020 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.foreco.2020.118333$2DOI
100 1 $aFERREIRA, T. M. C.
245 $aHow long does the Amazon rainforest take to grow commercially sized trees? An estimation methodology for Manilkara elata (Allemão ex Miq.) Monach.$h[electronic resource]
260 $c2020
520 $aIt is important to know the growth rate of the species to be managed to establish sustainable forest management plans because from this information, it is possible to know which species have reached the minimum commercial size to be collected in future harvests. Manilkara elata (Allemão ex Miq.) Monach is considered one of the most commercialized timber tree species, both inside and outside of Brazil. Thus, the objective of this study was to model the growth rate and the time required for the trees of this species to reach the minimum cutting diameter defined by the current Brazilian legislation; the analysis was based on the adapted Weibull function with data from 31 years of monitoring in the National Forest of Brazil in Tapajós, Pará, Amazon, Brazil. Three models were proposed to estimate (i) the annual periodic increase in diameter (API), (ii) the future diameter (df) and (iii) the time period in years (t) that each tree would need to reach a future diameter according to the average growth rate of the target species and its forest community. Taken together, the data from the managed and unmanaged areas showed no statistically significant differences between the values observed and estimated by the proposed model when assessed with the Graybill F test. The adapted Weibull model performed well when estimating the annual periodic increment and future tree diameter of the M. elata population. Based on the diameter growth rate, the 5 cm diameter M. elata trees would require 601?781 years to reach the minimum commercial diameter of 50 cm, but the 40?49.9 cm diameter trees that are considered stock for the next harvest would take an average of 20 years to reach this commercial diameter. As the estimated average growth time is shorter than the cutting cycle prescribed by the legislation (25?35 years), it is recommended that forestry treatments that favor longer survival of M. elata individuals be adopted to achieve greater continuous production by primarily considering the long period that young individuals need to reach the cutting diameter.
650 $aFloresta Tropical
653 $aGestão florestal
700 1 $aCARVALHO, J. O. P. de
700 1 $aEMMERT, F.
700 1 $aRUSCHEL, A. R.
700 1 $aNASCIMENTO, R. G. M.
773 $tForest Ecology and Management$gv. 473, Article 118333, Oct. 2020.
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Registro original: |
Embrapa Amazônia Oriental (CPATU) |
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Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
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Registro Completo
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Biblioteca(s): |
Embrapa Arroz e Feijão. |
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Data corrente: |
11/03/2010 |
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Data da última atualização: |
11/09/2012 |
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Tipo da produção científica: |
Artigo em Anais de Congresso / Nota Técnica |
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Autoria: |
MENDES, M. P.; RAMALHO, M. A. P.; ABREU, Â. de F. B. |
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Afiliação: |
MARCELA PEDROSO MENDES, mestranda UFLA; MAGNO ANTONIO PATTO RAMALHO, UFLA; ANGELA DE FATIMA BARBOSA ABREU, CNPAF. |
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Título: |
Potencial de uma população segregante de feijão após dez ciclos de seleção recorrente. |
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Ano de publicação: |
2009 |
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Fonte/Imprenta: |
In: CONGRESSO BRASILEIRO DE MELHORAMENTO DE PLANTAS, 5., 2009, Guarapari. O melhoramento e os novos cenários da agricultura: anais. Vitória: Incaper, 2009. |
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Descrição Física: |
1 CD-ROM. |
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Idioma: |
Português |
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Conteúdo: |
A seleção recorrente é um processo cíclico de melhoramento em que se espera incrementar a média da população para o caráter sob seleção sem exaurir a variabilidade. Assim é indispensável estimar a variabilidade genética da população sob seleção periodicamente. O objetivo deste trabalho foi quantificar a variabilidade genética entre progênies após dez ciclos de seleção recorrente no feijoeiro. |
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Thesagro: |
Feijão; Melhoramento genético vegetal; Phaseolus vulgaris. |
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Categoria do assunto: |
G Melhoramento Genético |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/66009/1/2279.pdf
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Marc: |
LEADER 01070nam a2200181 a 4500
001 1660853
005 2012-09-11
008 2009 bl uuuu u00u1 u #d
100 1 $aMENDES, M. P.
245 $aPotencial de uma população segregante de feijão após dez ciclos de seleção recorrente.
260 $aIn: CONGRESSO BRASILEIRO DE MELHORAMENTO DE PLANTAS, 5., 2009, Guarapari. O melhoramento e os novos cenários da agricultura: anais. Vitória: Incaper$c2009
300 $c1 CD-ROM.
520 $aA seleção recorrente é um processo cíclico de melhoramento em que se espera incrementar a média da população para o caráter sob seleção sem exaurir a variabilidade. Assim é indispensável estimar a variabilidade genética da população sob seleção periodicamente. O objetivo deste trabalho foi quantificar a variabilidade genética entre progênies após dez ciclos de seleção recorrente no feijoeiro.
650 $aFeijão
650 $aMelhoramento genético vegetal
650 $aPhaseolus vulgaris
700 1 $aRAMALHO, M. A. P.
700 1 $aABREU, Â. de F. B.
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Registro original: |
Embrapa Arroz e Feijão (CNPAF) |
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