Banca de QUALIFICAÇÃO: THIAGO FERREIRA PEREIRA

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
DISCENTE : THIAGO FERREIRA PEREIRA
DATA : 14/02/2024
HORA: 08:00
LOCAL: online
TÍTULO:

ANALYSIS OF ECOSYSTEM SERVICES OF THE PIRAPUTANGA STREAM WATER BASIN

PALAVRAS-CHAVES:

Environmental transformations. Greenhouse gases. Water quality.

PÁGINAS: 65
GRANDE ÁREA: Ciências Biológicas
ÁREA: Ecologia
RESUMO:

The change in the landscape is a result of rapid urbanization. Generating high demand for food, water and fuel, it drives intense environmental transformations resulting in the loss of ecosystem services (ES). Understanding how ES works and the consequences of environmental changes within a river basin are extremely important for their preservation. In this way, the objective was to analyze the impact of environmental transformations in the SE of the Córrego Piraputanga Hydrographic Basin (BHCP) with a focus on analyzing the flow of greenhouse gases and water quality. In the first chapter, the impact of environmental transformations on changes in natural landscapes was analyzed. Data was sought regarding land use and coverage, deforestation, loss of surface water area and fires. The degree of landscape transformation was based on the degree of daylily. It is noteworthy that BHCP is in the process of landscape transition, moderate degree of hemerobia, observing a decrease in water and an increase in pastures and fires. The transition process has shown worrying trends affecting biodiversity and the ability of ecosystems to provide environmental services. The second chapter reinforces the effect of environmental transformations on the imbalance of ES’s. The objective was to analyze the dynamics of CO2 flow in an ecotonal area between the Amazon, Cerrado and Pantanal, demonstrating the contribution of different environmental compartments to CO2 emissions. The CO2 flow involved the use of closed transparent acrylic chambers, positioned over water and soil. The analyzes show that the substantial drop in water affects the carbon balance. The CO2 averages recorded in the water were higher compared to exposed soil. However, temporal analysis reveals a decrease in water areas and a parallel increase in exposed soil areas. In this sense, it was observed that a notable inversion is occurring in the system, where there is a decrease in water and consequently an increase in exposed soil. This inversion causes an imbalance in the flow of GHG, in this case an increasing emission of CO2 in areas of exposed soil. In the third chapter, the objective was to investigate the quality of water originating in the Cerrado and flowing into the Pantanal within the BHCP. In this sense, collections were carried out from the source to the mouth at different periods of the year. Our results indicated that the water quality of this basin does not vary significantly between sampling points. However, the concentrations of nitrogen and phosphorus are highlighted, which showed worrying variations with values above those predicted by Resolution CONAMA/357. In short, the water quality of the river basin is good, but it is necessary to continue with public policies and sustainable actions in the region to guarantee the health of the ecosystem. To conclude, forecast analyzes further reinforce our findings. In the future, the consequences of environmental transformations such as burning and the accumulation of deforested areas will result in water loss in the system. Consequently, there will be an increase in pasture areas and exposed soil.

MEMBROS DA BANCA:
Presidente - 118188003 - ERNANDES SOBREIRA OLIVEIRA JUNIOR
Interno - 80970002 - DIONEI JOSE DA SILVA
Externo à Instituição - 017.068.651-55 - BEATRIZ FERRAZ BUHLER - SEDUC - MT
Externo à Instituição - MARCELA BIANCHESSI DA CUNHA SANTINO - UFSCAR