Banca de DEFESA: FELIPE CARDOSO DE MENEZES

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : FELIPE CARDOSO DE MENEZES
DATE: 29/10/2021
TIME: 10:00
LOCAL: Sala virtual no google meet
TITLE:

STORAGE OF LITTER AND WATER IN SUCCESSIONAL ECOSYSTEMS OF THE DOWNTOWN GUAMÁ RIVER, EASTERN AMAZON

KEY WORDS:

River Plain; Litter; Water storage; litter stock

PAGES: 43
BIG AREA: Ciências Agrárias
AREA: Recursos Florestais e Engenharia Florestal
SUMMARY:

Litter is an important indicator of ecosystem restoration quality, where its physical properties, water storage capacity and litter stock vary from one ecosystem to another. In the Amazon, the Interfluvial Plateaus Forest Successional Ecosystems (ESFPI) and the Fluvial Plains Forest Successional Ecosystems (ESFPF) are examples that represent differences for the litter factor. Thus, the following question was proposed: Do the interfluvial plateau successional forest ecosystems have a litter stock and higher water storage capacity compared to the river plain? With the hypothesis that (h): If the interfluvial plateau ecosystem has a larger litter stock, then it will have a greater water storage capacity regardless of the collection period. The experiment was carried out at UFRA, Campus Belém. Each ecosystem was considered as a treatment and 12 plots of 10m x 100m were implanted and with the use of a metallic collector 36 samples were collected per ecosystem with an interval of 6 months between collections. For the study, a floristic analysis (CAP>15cm) of ecosystems was performed and litter samples were collected to determine its storage on the soil surface (Mg.ha-1) and water storage (%). The experimental design applied was completely randomized with 2x2. Euterpe oleraceae presented the most expressive values in both ecosystems and the Fabaceae family was the richest in species. From the analysis of the mean values collected from the physical properties of the litter, water storage capacity and stock, the hypothesis was considered as rejected (ANOVA, p < 0.05). With the ESFPI ecosystem showing the highest litter storage in the period with less rain (10.5 ± 3.75 Mg.ha-1) and the ESFPF ecosystem the highest average water storage in the period of more rain (349%), it was considered that the ecosystem with the largest litter stock does not have the greatest water storage capacity, leading to believe that these characteristics come from factors of the ecosystem itself.

BANKING MEMBERS:
Presidente - 388426 - FRANCISCO DE ASSIS OLIVEIRA
Externo à Instituição - RUY GUILHERME CORREIA - NENHUMA
Externa à Instituição - VALÉRIA PEREIRA BRAZ HOMCI - NENHUMA
Externa à Instituição - VANDA MARIA SALES DE ANDRADE - NENHUMA