Data/hora: 05/06/2024 08:09:25

Biblioteca(s): 	Embrapa Acre; Embrapa Amazônia Oriental.	
Data corrente: 	11/01/2021	
Data da última atualização: 	29/11/2023	
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.	
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.	
Título: 	Competition indices after reduced impact logging in the Brazilian Amazon.	
Ano de publicação: 	2021	
Fonte/Imprenta: 	Journal of Environmental Management, v. 281, 111898, Mar. 2021.	
DOI: 	https://doi.org/10.1016/j.jenvman.2020.111898	
Idioma: 	Inglês	
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.	
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).	
Thesagro: 	Área Basal; Árvore; Árvore Florestal; Competição Biológica; Crescimento; Exploração Florestal; Mortalidade.	
Thesaurus Nal: 	Forest management; Logging; Plant competition; Plant growth; Tree mortality; Tropical rain forests; Tropical wood.	
Categoria do assunto: 	K Ciência Florestal e Produtos de Origem Vegetal	
Registro original: 	Embrapa Amazônia Oriental (CPATU)	
Exemplares: 	CPAF-AC - (27093-1) - UPC - AP - DD -  -  -  - DIS
CPATU - (59144-1) - UPC - AP - DD -  -  -  - DIS