Banca de QUALIFICAÇÃO: WELTON DOS SANTOS BARROS

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
STUDENT : WELTON DOS SANTOS BARROS
DATE: 06/01/2022
TIME: 09:00
LOCAL: Ufra Campus Belém
TITLE:

SAMPLING STRATEGIES IN A NATIVE FOREST ECOSYSTEM IN THE EASTERN AMAZON.

KEY WORDS:

 Eastern Amazonia., Sampling, Census.

PAGES: 50
BIG AREA: Ciências Agrárias
AREA: Recursos Florestais e Engenharia Florestal
SUMMARY:

Tropical forest ecosystems account for the largest proportion of the world's forests (45%), covering an area of 5,663,700 km² (FAO, 2020). In this context, there is a need to know which is the size of the plots and the sampling intensity that provides production accuracy within a pre-established error limit in comparison with the forest census. Therefore, this research has its importance based on the following question: How does sampling manage to check production accuracy, coverage value and species richness when compared to a forest census, in an Amazon forest ecosystem? As a hypothesis, we have: If the sampling is carried out according to statistical criteria, then it will accurately estimate the production, the coverage value and the richness of the species present in the ecosystem. This work seeks to analyze the sampling accuracy compared to the forest census in an area of primary forest in the municipality of Santarém, in the State of Pará, as a subsidy for potential areas of sustainable forest management. The intensities proposed in this work were 2%, 5% and 10%, where the possible number of sample units was identified for the respective intensities. The inclusion diameter was an inventory of trees with DBH ≥ 40 cm, from a list of 118 species considered commercial. The sampling system was simulated and based on the fixed area method and the two-stage systematic sampling process. The number of trees per parametric hectare of the study forest fragment was 18. The parametric basal area of the forest fragment was 5.91 m2 ha-1 . The volume per parametric hectare of the forest fragment was 77.27 m2 .

BANKING MEMBERS:
Externo ao Programa - 2146499 - JONAS ELIAS CASTRO DA ROCHA
Externa ao Programa - 388514 - ROSANGELA DE JESUS SOUSA
Externa à Instituição - VALÉRIA PEREIRA BRAZ HOMCI - NENHUMA
Presidente - 003.480.382-32 - WALMER BRUNO ROCHA MARTINS - NENHUMA