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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 Acre; Embrapa Amazônia Oriental. |
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Data corrente: |
11/01/2021 |
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Data da última atualização: |
29/11/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
OLIVEIRA, E. K. B. de; REZENDE, A. V.; FREITAS, L. J. M. de; MURTA JÚNIOR, L. S.; CASTRO, R. V. O.; OLIVEIRA, M. V. N. d'; BARROS, Q. S. |
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Afiliação: |
ERICA KAROLINA BARROS DE OLIVEIRA; ALBA VALÉRIA REZENDE, UNIVERSIDADE DE BRASÍLIA; LUCAS JOSE MAZZEI DE FREITAS, CPATU; LEONIDAS SOARES MURTA JÚNIOR, INSTITUTO ESTADUAL DE FLORESTAS; RENATO VINÍCIUS OLIVEIRA CASTRO, UNIVERSIDADE DE BRASÍLIA; MARCUS VINICIO NEVES D OLIVEIRA, CPAF-AC; QUÉTILA SOUZA BARROS, UNIVERSIDADE FEDERAL DO ESPÍRITO SANTO. |
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Título: |
Competition indices after reduced impact logging in the Brazilian Amazon. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
Journal of Environmental Management, v. 281, 111898, Mar. 2021. |
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DOI: |
https://doi.org/10.1016/j.jenvman.2020.111898 |
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Idioma: |
Inglês |
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Conteúdo: |
Competition for resources can affect growth and increase mortality in forest stands. The effects of this process are little known, especially in areas subjected to forest management which show distinct growth dynamics when compared to unmanaged natural areas. This study aimed to estimate, evaluate and select the best fit competition indices (CI) for individual trees in a managed forest in the eastern Amazon. The data used originated from 18 permanent plots of 1 ha each, which were monitored for 12 years after Reduced Impact Logging (RIL). For the competition analysis, 23 indices were tested. CIs were evaluated based on graphical analyses and linear correlation coefficients(r)between each index and variables, basal area growth AG, probability of mortality(Pm), and post-logging period (PLP). In addition, the partial F-test was applied to verify how well the calculated CIs explain the variations observed in AGandP(m). The distance-independent index for BAL (Basal Area Larger) performed the best. For the distance-dependent and semi-independent indices, the best interactions with the variables tested occurred in radii of 15 and 20 m away from the object tree. The largest trees presented higher values of AG. While P(m) was similar among the three tree classes, larger trees had a slightly higher P(m)due to thier low density of individuals. The results obtained in this study may help to include CIs in growth and production models at the individual tree level in tropical rainforests, especially in those managed in the Brazilian Amazon. MenosCompetition for resources can affect growth and increase mortality in forest stands. The effects of this process are little known, especially in areas subjected to forest management which show distinct growth dynamics when compared to unmanaged natural areas. This study aimed to estimate, evaluate and select the best fit competition indices (CI) for individual trees in a managed forest in the eastern Amazon. The data used originated from 18 permanent plots of 1 ha each, which were monitored for 12 years after Reduced Impact Logging (RIL). For the competition analysis, 23 indices were tested. CIs were evaluated based on graphical analyses and linear correlation coefficients(r)between each index and variables, basal area growth AG, probability of mortality(Pm), and post-logging period (PLP). In addition, the partial F-test was applied to verify how well the calculated CIs explain the variations observed in AGandP(m). The distance-independent index for BAL (Basal Area Larger) performed the best. For the distance-dependent and semi-independent indices, the best interactions with the variables tested occurred in radii of 15 and 20 m away from the object tree. The largest trees presented higher values of AG. While P(m) was similar among the three tree classes, larger trees had a slightly higher P(m)due to thier low density of individuals. The results obtained in this study may help to include CIs in growth and production models at the individual tree level in tropical rainforests,... Mostrar Tudo |
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Palavras-Chave: |
Amazon forest; Amazônia Oriental; Basal area growth; Bosque tropical húmedo; CKBV Florestal Ltda; Competición vegetal; Crecimiento de planta; Crescimento vegetal; Eastern Amazonia; Explotación forestal; Fazenda Rio Capim; Forest harvesting; Madera tropical; Manejo florestal; Mortalidad de los árboles; Pará; Paragominas (PA). |
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Thesagro: |
Área Basal; Árvore; Árvore Florestal; Competição Biológica; Crescimento; Exploração Florestal; Mortalidade. |
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Thesaurus Nal: |
Forest management; Logging; Plant competition; Plant growth; Tree mortality; Tropical rain forests; Tropical wood. |
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Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
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Marc: |
LEADER 03245naa a2200577 a 4500
001 2158887
005 2023-11-29
008 2021 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.jenvman.2020.111898$2DOI
100 1 $aOLIVEIRA, E. K. B. de
245 $aCompetition indices after reduced impact logging in the Brazilian Amazon.$h[electronic resource]
260 $c2021
520 $aCompetition for resources can affect growth and increase mortality in forest stands. The effects of this process are little known, especially in areas subjected to forest management which show distinct growth dynamics when compared to unmanaged natural areas. This study aimed to estimate, evaluate and select the best fit competition indices (CI) for individual trees in a managed forest in the eastern Amazon. The data used originated from 18 permanent plots of 1 ha each, which were monitored for 12 years after Reduced Impact Logging (RIL). For the competition analysis, 23 indices were tested. CIs were evaluated based on graphical analyses and linear correlation coefficients(r)between each index and variables, basal area growth AG, probability of mortality(Pm), and post-logging period (PLP). In addition, the partial F-test was applied to verify how well the calculated CIs explain the variations observed in AGandP(m). The distance-independent index for BAL (Basal Area Larger) performed the best. For the distance-dependent and semi-independent indices, the best interactions with the variables tested occurred in radii of 15 and 20 m away from the object tree. The largest trees presented higher values of AG. While P(m) was similar among the three tree classes, larger trees had a slightly higher P(m)due to thier low density of individuals. The results obtained in this study may help to include CIs in growth and production models at the individual tree level in tropical rainforests, especially in those managed in the Brazilian Amazon.
650 $aForest management
650 $aLogging
650 $aPlant competition
650 $aPlant growth
650 $aTree mortality
650 $aTropical rain forests
650 $aTropical wood
650 $aÁrea Basal
650 $aÁrvore
650 $aÁrvore Florestal
650 $aCompetição Biológica
650 $aCrescimento
650 $aExploração Florestal
650 $aMortalidade
653 $aAmazon forest
653 $aAmazônia Oriental
653 $aBasal area growth
653 $aBosque tropical húmedo
653 $aCKBV Florestal Ltda
653 $aCompetición vegetal
653 $aCrecimiento de planta
653 $aCrescimento vegetal
653 $aEastern Amazonia
653 $aExplotación forestal
653 $aFazenda Rio Capim
653 $aForest harvesting
653 $aMadera tropical
653 $aManejo florestal
653 $aMortalidad de los árboles
653 $aPará
653 $aParagominas (PA)
700 1 $aREZENDE, A. V.
700 1 $aFREITAS, L. J. M. de
700 1 $aMURTA JÚNIOR, L. S.
700 1 $aCASTRO, R. V. O.
700 1 $aOLIVEIRA, M. V. N. d'
700 1 $aBARROS, Q. S.
773 $tJournal of Environmental Management$gv. 281, 111898, Mar. 2021.
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Registro original: |
Embrapa Amazônia Oriental (CPATU) |
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Registro Completo
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Biblioteca(s): |
Embrapa Unidades Centrais. |
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Data corrente: |
06/04/2018 |
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Data da última atualização: |
06/04/2018 |
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Autoria: |
ALVES, L. S.; RODRIGUEZ, D.; MACHADO, V. M. V.; MAMPRIM, M. J.; VULCANO, L. C.; AMORIM, R. M. |
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Afiliação: |
Lidiane S. Alves, Departamento de Reprodução Animal e Radiologia Veterinária, FMVZ/Unesp; Diego Rodriguez, Departamento de Clínica Veterinária, FMVZ-Unesp; Vânia M. V. Machado, Departamento de Reprodução Animal e Radiologia Veterinária, FMVZ/Unesp; Maria J. Mamprim, Departamento de Reprodução Animal e Radiologia Veterinária, FMVZ/Unesp; Luiz C. Vulcano, Departamento de Reprodução Animal e Radiologia Veterinária, FMVZ/Unesp; Rogério M. Amorim, Departamento de Clínica Veterinária, FMVZ-Unesp. |
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Título: |
A retrospective study of quadrigeminal arachnoid cysts diagnosed by Magnetic Resonance Imaging and Computed Tomography in 26 dogs. |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
Pesquisa Veterinária Brasileira, Rio de Janeiro, V. 3, n. 2, p. 300-308, fevereiro 2018. |
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Idioma: |
Inglês |
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Notas: |
Título em português: Estudo retrospectivo de cistos aracnoides da cisterna quadrigeminal diagnosticados pela ressonância magnética e tomografia computadorizada em 26 cães. |
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Conteúdo: |
Arachnoid cysts are accumulations of cerebrospinal fluid that occur within the arachnoid membrane due to the splitting or duplication of this structure. The aim of this retrospective study is to report the occurrence of this condition in 26 dogs, as well as to describe the findings of computed tomography imaging and magnetic resonance image scans and to correlate these with the clinical signs. A prevalence of the condition was observed in males, predominantly in the small breeds Miniature Pinscher and Shih Tzu, with age raging from 2 months to 9 years. The mainly clinical signs observed in these dogs were seizures and cerebellar ataxia. The study concluded that in 17 dogs the quadrigeminal arachnoid cyst was regarded as an incidental finding, in 6 dogs this condition was regarded as the determinant cause of the clinical signs, and in 3 dogs some clinical signs were associated with arachnoid cyst, but they also presented clinical signs involving others sites of intracranial lesion. |
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Palavras-Chave: |
Cerebellar ataxia; Cisterna quadrigeminal; Cistos aracnoides; Convulsão; Patology; Quadrigeminal arachnoid cysts; Ressonância magnética; Tomografia computadorizada. |
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Thesagro: |
Cão. |
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Thesaurus NAL: |
Central nervous system diseases; Computed Tomography; Dogs; Hydrocephalus; Magnetic Resonance Imaging; Seizures. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/175134/1/A-retrospective-study-of-quadrigeminal-arachnoid-cysts.pdf
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Marc: |
LEADER 02321naa a2200373 a 4500
001 2090324
005 2018-04-06
008 2018 bl uuuu u00u1 u #d
100 1 $aALVES, L. S.
245 $aA retrospective study of quadrigeminal arachnoid cysts diagnosed by Magnetic Resonance Imaging and Computed Tomography in 26 dogs.$h[electronic resource]
260 $c2018
500 $aTítulo em português: Estudo retrospectivo de cistos aracnoides da cisterna quadrigeminal diagnosticados pela ressonância magnética e tomografia computadorizada em 26 cães.
520 $aArachnoid cysts are accumulations of cerebrospinal fluid that occur within the arachnoid membrane due to the splitting or duplication of this structure. The aim of this retrospective study is to report the occurrence of this condition in 26 dogs, as well as to describe the findings of computed tomography imaging and magnetic resonance image scans and to correlate these with the clinical signs. A prevalence of the condition was observed in males, predominantly in the small breeds Miniature Pinscher and Shih Tzu, with age raging from 2 months to 9 years. The mainly clinical signs observed in these dogs were seizures and cerebellar ataxia. The study concluded that in 17 dogs the quadrigeminal arachnoid cyst was regarded as an incidental finding, in 6 dogs this condition was regarded as the determinant cause of the clinical signs, and in 3 dogs some clinical signs were associated with arachnoid cyst, but they also presented clinical signs involving others sites of intracranial lesion.
650 $aCentral nervous system diseases
650 $aComputed Tomography
650 $aDogs
650 $aHydrocephalus
650 $aMagnetic Resonance Imaging
650 $aSeizures
650 $aCão
653 $aCerebellar ataxia
653 $aCisterna quadrigeminal
653 $aCistos aracnoides
653 $aConvulsão
653 $aPatology
653 $aQuadrigeminal arachnoid cysts
653 $aRessonância magnética
653 $aTomografia computadorizada
700 1 $aRODRIGUEZ, D.
700 1 $aMACHADO, V. M. V.
700 1 $aMAMPRIM, M. J.
700 1 $aVULCANO, L. C.
700 1 $aAMORIM, R. M.
773 $tPesquisa Veterinária Brasileira, Rio de Janeiro, V. 3$gn. 2, p. 300-308, fevereiro 2018.
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