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 | Acesso ao texto completo restrito à biblioteca da Embrapa Gado de Leite. Para informações adicionais entre em contato com cnpgl.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Gado de Leite. |
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Data corrente: |
04/10/2023 |
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Data da última atualização: |
15/02/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
MULLER, M. D.; BORGES, C. A. V.; RESENDE, L. de O.; MARTINS, C. E. |
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Afiliação: |
MARCELO DIAS MULLER, CNPGL; CRISTIANO AMANCIO VIEIRA BORGES, CNPGL; LEONARDO DE OLIVEIRA RESENDE, ESCAS-ESCOLA SUPERIOR DE CONSERVAÇÃO AMBIENTAL E SUSTENTABILIDADE; CARLOS EUGENIO MARTINS, CNPGL. |
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Título: |
Estimating volume of eucalyptus trees for small-scale silvopastoral systems: do we really need height for accurate estimates? |
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Ano de publicação: |
2024 |
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Fonte/Imprenta: |
European Journal of Forest Research, v. 143, p. 81-94, 2024. |
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DOI: |
https://doi.org/10.1007/s10342-023-01608-2 |
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Idioma: |
Inglês |
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Conteúdo: |
Double-entry volume equations require measurement of diameter and height variables, making forest inventory more expensive. This can be limiting for small farms. Then the single-entry volume equations, where diameter at breast height (DBH) is the independent variable, are a cost-efective option for these landowners because they optimize data collection due to the use of one readily available variable (the DBH) and require few resources. The objective of this study was to evaluate the efective contribution of the height in the estimation of eucalypt trees volume for small-scale silvopastoral systems. For this, four single-entry and fve double-entry volumetric models were ftted to the data for six diferent silvopastoral systems in Coronel Pacheco, Minas Gerais State, Brazil. The six strata consisted of combinations of three diferent Eucalyptus genetic material and three silvopastoral systems, and the models were compared aiming the selection of the best of each type in each system. Double-entry models, specifcally logarithmic Spurr and logarithmic Schumacher?Hall, ftted better than single-entry ones for all but one of the strata, where they were overcome by the Husch?s model. Although the superiority of the formers can have been easily verifed by diferent and complementary statistics, we found that the volume estimates provided by the best double-entry and the best single-entry model of each stratum difered by a quantity that can be considered irrisory, from both practical and monetary points of view. On a per tree basis, the sum of the diferences for each stratum, in absolute value, did not surpass 0.051 m3 , or only US$ 0.25, considering a market value of US$ 4.90/m3 . And when simulating a real scenario of batch sales for each stratum, by simple extrapolation of the mean volume and considering their efective tree stand, such diferences did not exceed±0.25 m3 /ha, or±US$ 1.20/ha. Following the same logic, even when comparing the best doubleentry model to the worst single-entry one for each stratum, we still observed only negligible diferences. Considering the sampled trees, these diferences amounted to a balance per stratum of only?0.015 to+0.032 m3 (or between?US$ 0.07 and+US$ 0.16). When extrapolated to the total trees in each stratum, the overall balance did not exceed an absolute value of 0.283 m3 (or US$1.39). These results suggest that the contribution of height may be negligible in estimating the volume of eucalyptus trees for small silvopastoral systems. Consequently, smallholders may not beneft from measuring tree heights. Rather, they may save money by foregoing a comprehensive forest inventory and instead using single-entry models, such as the Husch model, to estimate the wood volume of their forest stands. Another highlight or reinforcement of this work is that the use of the Furnival index was crucial for a reliable selection of the best models, once it allows for comparisons among models both with and without a log transformation of the volume. MenosDouble-entry volume equations require measurement of diameter and height variables, making forest inventory more expensive. This can be limiting for small farms. Then the single-entry volume equations, where diameter at breast height (DBH) is the independent variable, are a cost-efective option for these landowners because they optimize data collection due to the use of one readily available variable (the DBH) and require few resources. The objective of this study was to evaluate the efective contribution of the height in the estimation of eucalypt trees volume for small-scale silvopastoral systems. For this, four single-entry and fve double-entry volumetric models were ftted to the data for six diferent silvopastoral systems in Coronel Pacheco, Minas Gerais State, Brazil. The six strata consisted of combinations of three diferent Eucalyptus genetic material and three silvopastoral systems, and the models were compared aiming the selection of the best of each type in each system. Double-entry models, specifcally logarithmic Spurr and logarithmic Schumacher?Hall, ftted better than single-entry ones for all but one of the strata, where they were overcome by the Husch?s model. Although the superiority of the formers can have been easily verifed by diferent and complementary statistics, we found that the volume estimates provided by the best double-entry and the best single-entry model of each stratum difered by a quantity that can be considered irrisory, from both practical and... Mostrar Tudo |
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Palavras-Chave: |
Agrosilvopastoral systems; Crop-livestock-forestry systems; Sistema agrossilvipastoril; Sustainable farming systems. |
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Thesagro: |
Sistema de Cultivo. |
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Categoria do assunto: |
A Sistemas de Cultivo |
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Marc: |
LEADER 03820naa a2200229 a 4500
001 2157074
005 2024-02-15
008 2024 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1007/s10342-023-01608-2$2DOI
100 1 $aMULLER, M. D.
245 $aEstimating volume of eucalyptus trees for small-scale silvopastoral systems$bdo we really need height for accurate estimates?$h[electronic resource]
260 $c2024
520 $aDouble-entry volume equations require measurement of diameter and height variables, making forest inventory more expensive. This can be limiting for small farms. Then the single-entry volume equations, where diameter at breast height (DBH) is the independent variable, are a cost-efective option for these landowners because they optimize data collection due to the use of one readily available variable (the DBH) and require few resources. The objective of this study was to evaluate the efective contribution of the height in the estimation of eucalypt trees volume for small-scale silvopastoral systems. For this, four single-entry and fve double-entry volumetric models were ftted to the data for six diferent silvopastoral systems in Coronel Pacheco, Minas Gerais State, Brazil. The six strata consisted of combinations of three diferent Eucalyptus genetic material and three silvopastoral systems, and the models were compared aiming the selection of the best of each type in each system. Double-entry models, specifcally logarithmic Spurr and logarithmic Schumacher?Hall, ftted better than single-entry ones for all but one of the strata, where they were overcome by the Husch?s model. Although the superiority of the formers can have been easily verifed by diferent and complementary statistics, we found that the volume estimates provided by the best double-entry and the best single-entry model of each stratum difered by a quantity that can be considered irrisory, from both practical and monetary points of view. On a per tree basis, the sum of the diferences for each stratum, in absolute value, did not surpass 0.051 m3 , or only US$ 0.25, considering a market value of US$ 4.90/m3 . And when simulating a real scenario of batch sales for each stratum, by simple extrapolation of the mean volume and considering their efective tree stand, such diferences did not exceed±0.25 m3 /ha, or±US$ 1.20/ha. Following the same logic, even when comparing the best doubleentry model to the worst single-entry one for each stratum, we still observed only negligible diferences. Considering the sampled trees, these diferences amounted to a balance per stratum of only?0.015 to+0.032 m3 (or between?US$ 0.07 and+US$ 0.16). When extrapolated to the total trees in each stratum, the overall balance did not exceed an absolute value of 0.283 m3 (or US$1.39). These results suggest that the contribution of height may be negligible in estimating the volume of eucalyptus trees for small silvopastoral systems. Consequently, smallholders may not beneft from measuring tree heights. Rather, they may save money by foregoing a comprehensive forest inventory and instead using single-entry models, such as the Husch model, to estimate the wood volume of their forest stands. Another highlight or reinforcement of this work is that the use of the Furnival index was crucial for a reliable selection of the best models, once it allows for comparisons among models both with and without a log transformation of the volume.
650 $aSistema de Cultivo
653 $aAgrosilvopastoral systems
653 $aCrop-livestock-forestry systems
653 $aSistema agrossilvipastoril
653 $aSustainable farming systems
700 1 $aBORGES, C. A. V.
700 1 $aRESENDE, L. de O.
700 1 $aMARTINS, C. E.
773 $tEuropean Journal of Forest Research$gv. 143, p. 81-94, 2024.
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Embrapa Gado de Leite (CNPGL) |
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| Registros recuperados : 193 | |
| 164. |  | NASCIMENTO, M. L.; MORAES, G. J. de; CAPALBO, D. M. F.; MAIA, A. de H. N.; OLIVEIRA, R. C. A. L. Efeito de Bacillus thuringiensis na biologia de Podisus nigrispinus (HETEROPTERA: PENTATOMIDAE). In: CONGRESSO BRASILEIRO DE ENTOMOLOGIA, 16.; ENCONTRO NACIONAL DE FITOSSANITARISTAS, 7., 1997, Salvador. Resumos. Salvador: SEB / EMBRAPA-CNPMF, 1997. p.236| Biblioteca(s): Embrapa Meio Ambiente. |
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| 165. | | WATANABE, M. A.; NARDO, E. A. B. de; MORAES, G. J. de; MAIA, A. de H. N.; MARIGO, A. L. S. Avaliação de risco de biopesticidas sobre insetos benéficos: Baculovirus anticarsia X Podisus nigrispinus. In: SIMPÓSIO DE CONTROLE BIOLÓGICO, 5., 1996, Foz do Iguaçu, PR. Anais: sessão de posters. Londrina: EMBRAPA-CNPSo/COBRAFI, 1996. p.270.| Biblioteca(s): Embrapa Meio Ambiente. |
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| 166. | | OLIVEIRA, D. C.; PRADO, E. P.; MORAES, G. J. de; MORAIS, E. G. F. de; CHAGAS, E. A.; GONDIM JR. M. G. C.; NAVIA, D. First report of Raoiella indica (Acari: Tenuipalpidae) in southeastern Brazil. Florida Entomologist, v. 99, n. 1, p. 123-125, 2016. Scientific Notes.| Tipo: Nota Técnica/Nota Científica |
| Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia; Embrapa Roraima. |
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| 167. | | FERREIRA, D. N. M.; MARSARO JÚNIOR, A. L.; SILVA, F. R. da; GONDIM JÚNIOR, M. G. C.; MORAES, G. J. de. First report of the red palm mite, Raoiella indica Hirst (Acari: Tenuipalpidae), in Brazil. Neotropical Entomology, Londrina, v. 40, n. 3, p. 409-411, 2011.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 1 |
| Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia; Embrapa Trigo. |
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| 168. | | NASCIMENTO, M. L.; CAPALBO, D. M. F.; MORAES, G. J. de; MAIA, A. de H. N.; NARDO, E. A. B. de. Efeito de produto a base de Bacillus thuringiensis var. kurstaki na longevidade, sobrevivência e preferência alimentar de Podisus nigrispinus. In: SIMPÓSIO DE CONTROLE BIOLÓGICO, 6., 1998, Rio de Janeiro. Anais: sessões de pôsteres. Rio de Janeiro: FIOCRUZ/EMBRAPA, 1998. p.93.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Meio Ambiente. |
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| 170. | | CASTRO, M. C. de; AZEVEDO, E. B. de; BRITTO, E. P. J.; BARRETO, M. R.; PITTA, R. M.; CASTILHO, R. C.; MORAES, G. J. de. Gamasina mite communities (Acari: Mesostigmata) in grain production systems of the southwestern Brazilian Amazon. Systematic and Applied Acarology, v. 26, n. 1, p. 1-14, 2021.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
| Biblioteca(s): Embrapa Agrossilvipastoril. |
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| 171. | | ARAUJO, W. F.; MORAES, G. J. de; ALENCAR, J. A. de; MERGULHAO, S. M. R.; WENZEL NETO, F.; DELALIBERA JUNIOR, I. Seletividade de agroquimicos a Mononychellus tanajoa (Bondar) e Amblyseius idaeus (Denmark & Muma) (Acari: Tetranychidae e Phytoseiidae). In: CONGRESSO BRASILEIRO DE MANDIOCA, 6., 1990, Londrina. Programacao e resumos. [S.l.]: Sociedade Brasileira de Mandioca, 1990. p. 38| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Semiárido. |
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| 172. | | SA, L. A. N. de; PESSOA, M. C. P. Y.; MORAES, G. J. de; PRADO, J. S. M.; PRADO, S. de S.; VASCONCELOS, R. M. de. Quarantine facilities and legal issues of the use of biocontrol agents in Brazil. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 51, n. 5, p. 502-509, maio 2016. Título em português: Estações quarentenárias e aspectos legais do uso de agentes de controle biológico no Brasil| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
| Biblioteca(s): Embrapa Meio Ambiente; Embrapa Unidades Centrais. |
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| 173. | | MORAES, G. J. de; CASTRO, T. M. M. G. de; KREITER, S.; QUILICI, S.; GONDIM JR. M. G. C.; SA, L. A. N. de. Search for natural enemies of Raoiella indica Hirst in Réunion Island (Indian Ocean). Acarologia, Paris, v. 52, n. 2, p. 129-134, 2012.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 3 |
| Biblioteca(s): Embrapa Meio Ambiente. |
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| 175. | | CÁCERES, S.; AGUIRRE, A.; COSTA, N.; SEGAÑA, L. G.; FARIÑA, N.; FREITAS ASTUA, J. de; MORAES, G. J.; TASSI, A. D.; KITAJIMA, E. W. Present situation of the citrus leprosis in Argentina and Paraguay. In: CONFERENCE INTERNATIONAL ORGANIZATION CITRUS VIROLOGISTS, 18., Campinas, SP, 2010. Proceedings... Campinas: IOCV, 2010. 1 CD-ROM. 054 PSO.
Publicado também em: Citrus Research & Technology, Cordeirópolis, v. 31, Suplemento, 2010| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Mandioca e Fruticultura. |
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| 177. | | ARGOLO, P. S.; SANTOS, R. M. V.; BITTENCOURT, M. A. L.; NORONHA, A. C. da S.; MORAES, G. J. de; OLIVEIRA, A. R. Phytoseiid mites (Acari: Phytoseiidae) associated with tropical ornamental plants, with a checklist and a key to the species of Bahia, Brazil. Zootaxa, v. 4258, n. 4, p. 345-364, 1 May 2017.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 1 |
| Biblioteca(s): Embrapa Amazônia Oriental. |
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| 180. | | BARROSO, G.; ROCHA, C. M.; MOREIRA, G. F.; HATA, F. T.; ROGGIA, S.; VENTURA, M. U.; PASINI, A.; SILVA, J. E. P.; HOLTZ, A. M.; MORAES, G. J. What is the southern limit of the distribution of red palm mite, Raoiella indica (Acari: Tenuipalpidae), in agricultural lands in Brazil? Florida Entomologist, v. 102, n. 3, p. 581-583, 2019.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
| Biblioteca(s): Embrapa Soja. |
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| Registros recuperados : 193 | |
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