Banca de QUALIFICAÇÃO: TALITA GODINHO BEZERRA

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
DISCENTE : TALITA GODINHO BEZERRA
DATA : 23/11/2018
HORA: 08:30
LOCAL: AUDITÓRIO-ICA/FLORESTA
TÍTULO:

ESTRUTURA E DINÂMICA DA REGENERAÇÃO NATURAL DE UMA FLORESTA DE TERRA FIRME MANEJADA NA AMAZÔNIA ORIENTAL 

PALAVRAS-CHAVES:

Floristic Composition, Forest Classes, Hill Series.

PÁGINAS: 39
GRANDE ÁREA: Ciências Agrárias
ÁREA: Recursos Florestais e Engenharia Florestal
RESUMO:

Seeking to answer how the structure and the floristic diversity are influenced by silvicultural interventions in different phases of forest development, the present study evaluated the arrangement and dynamics of the forest natural regeneration in permanent plots for 33 years after logging in the Tapajós National Forest in Belterra – PA, Brazil. A total of 36 permanent plots of 50 x 50 m were installed and mensured in 1981, 1983, 1985, 1987, 1992, 1997, 2007 and 2012. All individuals with total height (H) greater than 30 cm and DBH < 10 cm were monitored in three regeneration strata (seedlings, stalk and small tree) and three forest classes (gap, under construction forest and old grown forest). Density, floristic similarity by the Sorensen Index (So) and floristic diversity by the Hill Series were analyzed. It was verified by ANOVA for counting data wich the density of individuals differed over time after logging, in all regeneration and forest classes strata analyzed. Likewise, the diversity profiles generated by the Hill Series, for each year monitored in the same forest classes and regeneration strata, were statistically different from each other. The floristic similarity varied among the regeneration strata over time. For under construction and old grown forests classes high floristic similarity were found between 50 and 96 %. The gaps presented the lowest values of similarity, reaching 100% dissimilarity (So = 0). However, it was observed an exponential reduction in similarity over time in both forest classes. The results indicate that the forest exploitation and the disturbances caused by natural events promote significant changes in the structure and floristic diversity in the different layers of natural regeneration and forest classes over time.

MEMBROS DA BANCA:
Presidente - 2411802 - RODRIGO GERONI MENDES NASCIMENTO
Interno - 186.346.999-00 - JOAO OLEGARIO PEREIRA DE CARVALHO - UFRA
Externo à Instituição - RAFAEL RODE - UFOPA
Externo à Instituição - ADRIANO JOSÉ NOGUEIRA LIMA - INPA