Banca de DEFESA: THIAGO FERREIRA PEREIRA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : THIAGO FERREIRA PEREIRA
DATA : 25/03/2024
HORA: 08:00
LOCAL: Hibrido
TÍTULO:

ANALYSIS OF ECOSYSTEM SERVICES OF THE PIRAPUTANGA STREAM WATER BASIN

PALAVRAS-CHAVES:

Environmental transformations. Carbon dioxiclde (CO2). Water quality.

PÁGINAS: 104
GRANDE ÁREA: Ciências Biológicas
ÁREA: Ecologia
RESUMO:

The change in the landscape is the result of the conversion of natural areas into economic
matrices due to the high demand for food, water and fuel, driving intense environmental
transformations resulting in the loss of ecosystem services (ES). Understanding how ES works
and what the consequences of environmental changes within a river basin are fundamental to
their preservation and consequently their valuation. 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 has a moderate degree of hemerobic impact, a transitional
phase was observed in the landscape with a decrease in forests and water and an increase in
pastures and fires. The transition process presents trends that can affect the ecosystem's ability
to provide environmental services. The second chapter reinforces the effect of environmental
transformations on the imbalance of Greenhouse Gases (GHG). 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
measurement of CO2 flow involved the use of closed transparent acrylic chambers, positioned
over water and soil. The analyzes show that the substantial decrease in water in the BHCP
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 areas of exposed soil. In this sense, it was observed that a notable inversion is
occurring in the system, where there is a decrease in water coverage 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 the water that originates in the Cerrado and flows into the BHCP,
in the Pantanal. In this sense, collections were carried out from the source to the mouth of the
BHCP 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 presented values above those predicted by Resolution
CONAMA/357. In short, the BHCP has good water quality for both aquatic communities and
bathing purposes, but it is necessary to continue with public policies and sustainable actions in
the region to guarantee the health of the ecosystem. Forecast analyzes further reinforce our
findings. In the future, the consequences of environmental changes will result in the loss of
water in the system. Consequently, there will be an increase in pasture areas and exposed soil,
due to burning and the accumulation of deforested areas

MEMBROS DA BANCA:
Presidente - 118188003 - ERNANDES SOBREIRA OLIVEIRA JUNIOR
Interno - 80970002 - DIONEI JOSE DA SILVA
Externo ao Programa - 142174001 - EVERTON VALDOMIRO PEDROSO BRUM
Externo à Instituição - 017.068.651-55 - BEATRIZ FERRAZ BUHLER - SEDUC - MT
Externo à Instituição - 256.320.678-23 - MARCELA BIANCHESSI DA CUNHA SANTINO - UFSCAR