Banca de DEFESA: DIANCARLOS SERGIO PEREIRA DE OLIVEIRA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : DIANCARLOS SERGIO PEREIRA DE OLIVEIRA
DATE: 29/08/2023
TIME: 09:00
LOCAL: Virtual (google.meet)
TITLE:

EFFECT OF SILVICULTURAL TREATMENTS ON THE GROWTH OF 56 TREE SPECIES IN A DENSE FOREST IN THE EASTERN AMAZON

KEY WORDS:

diametric increment; liana cutting; tree girdling.

PAGES: 40
BIG AREA: Ciências Agrárias
AREA: Recursos Florestais e Engenharia Florestal
SUBÁREA: Manejo Florestal
SPECIALTY: Dendrometria e Inventário Florestal
SUMMARY:

Knowledge of the specific characteristics of each tree species is necessary to make decisions about the need to apply silvicultural treatments for their adequate favoring. With the aim of expanding knowledge regarding the effect of silvicultural treatments on tree species, in order to obtain information that may contribute to improving forest management in the Amazon, the present study evaluated the growth of 56 species of ecological importance in the dense forests of the Amazon. . The study was carried out at the Fazenda Rio Capim Forest Management Unit, belonging to the Keilla Florestal Group (CIKEL), located in the municipality of Paragominas, Brazilian Amazon. The experimental area consists of 700 ha, distributed in 14 Work Units. Of the total area, 600 hectares were logged in 2004 and 100 hectares were left untouched. In the exploited area, silvicultural treatments were applied in 2005, the year following exploration, consisting of cutting lianas and refinement by girdling trees. For the statistical analyses, assumptions of the analysis of variance (ANOVA) were verified, namely: a) normality with the Shapiro-Wilk test (p > 0.05) and visualization with the Q-Q plot graph, and b) homoscedasticity by Bartlett's test (p > 0.05). Once these assumptions were not met, the data were analyzed using analysis of repeated measures over time (ANOVA) non-parametric through the Kruskall-Wallis test (p < 0.05) and after significance, the measures were compared by the Dunn test (p < 0.05). Graphs were generated using the “ggplot2” package, and statistical analyzes and results using the “AgroR” package. All statistical analyzes were performed using the R version 4.2.1 program, at a significance level of p < 0.05. There was a significant effect (p = 0.001) of both the period and the silvicultural treatments in the group of 56 species. Considering the group of 56 species, all treatments showed a higher IPA, two years after the application of silvicultural treatments. T1 had the highest mean IPA, one year (0.48 cm yr-1), two years (0.62 cm yr-1) and four years (0.52 cm yr-1) after the application of silvicultural treatments, significantly differing from treatments T3 and T4 (p = 0.001).

BANKING MEMBERS:
Presidente - 4143218 - JOAO OLEGARIO PEREIRA DE CARVALHO
Interno - 741.673.590-49 - GUSTAVO SCHWARTZ - EMBRAPA
Interno - 1358527 - WALMER BRUNO ROCHA MARTINS
Externo ao Programa - 1551175 - RODRIGO SILVA DO VALE
Externa à Instituição - FRANCIMARY DA SILVA CARNEIRO - SEMAS