Banca de DEFESA: NATÁLIA APARECIDA SIVETI MORETTI

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : NATÁLIA APARECIDA SIVETI MORETTI
DATA : 25/04/2024
HORA: 08:00
LOCAL: https://meet.google.com/edj-ejsw-fsb
TÍTULO:

ENVIRONMENTAL IMPACTS ON THE SPRINGS OF THE RIBEIRÃO DO CAETÉ WATER BASIN, MATO GROSSO

PALAVRAS-CHAVES:

Springs; Occupation; Environmental impacts.

PÁGINAS: 131
GRANDE ÁREA: Ciências Exatas e da Terra
ÁREA: Geociências
SUBÁREA: Geografia Física
ESPECIALIDADE: Hidrogeografia
RESUMO:

As a result of the drastic changes in land use resulting from the process of occupation of the southwest of the State of Mato Grosso, through the implementation of the colonization policy in the south of the Amazon, many of the sources of water bodies in the Paraguay River water network show a level of degradation that threatens the availability of water resources in the region's municipalities, as well as the hydrological dynamics in the Pantanal of Mato Grosso. Given this fact, this research aimed to evaluate the environmental impacts resulting from human actions in the springs of the Ribeirão do Caeté stream hydrographic basin. The methodological procedures used included: bibliographic research, document analysis and fieldwork, aiming to characterize the springs selected for the study; to evaluate the state of degradation of these springs; and also identify the socio-environmental perception of rural owners in relation to the use and management of springs on their properties. The results indicate that this river basin has complex geoenvironmental characteristics, especially in relation to lithology and soils, which have a strong influence on water availability. In the case of lithology, both the cover and alluvial deposits and the dolomites of the Mirassol D’Oeste formation have favorable conditions for the infiltration and underground storage of water in aquifers of the porous and karst types, respectively. Likewise, the properties of Oxisols and Neosols favor infiltration and, therefore, have a high potential for underground water recharge. However, deforestation resulting from intense human occupation in recent decades has compromised infiltration and, therefore, the recharge of aquifers. The characterization of the springs indicates that they are all perennial, with a predominance of vertical duct morphology and point-type exfiltration; in relation to their location in the slope compartments, the majority of springs occur on the middle slope or low slope, with slopes that correspond to the gentle wavy or flat classes, respectively; furthermore, in 96.7% of cases there is no seasonal mobility. It was found that water from 93.3% of the springs is used to water cattle, which explains the fact that the predominant vegetation in the vicinity of 90.0% of the springs studied is made up of herbaceous grasses. Regarding the environmental assessment, the determination of the Environmental Impact Index in Nascentes showed that, as a result of degradation associated with environmental impacts, Regarding the environmental assessment, the determination of the Environmental Impact Index in Springs showed that, as a result of degradation associated with environmental impacts, 76.7% of the 30 springs evaluated fall into the Bad or Dire classes, while the remainder belong to the Reasonable class, there are no springs in the Optimal or Good classes. On the other hand, the results of the questionnaire applied to the owners of the land where these springs are located revealed that they do not have the necessary knowledge to properly manage the springs, which indicates the need to implement actions that support adequate future environmental management of the springs of the river basin of the Ribeirão do Caeté stream.

MEMBROS DA BANCA:
Interno - 130087004 - ALFREDO ZENEN DOMINGUEZ GONZALEZ
Interna - 114163019 - LEILA NALIS PAIVA DA SILVA ANDRADE
Externo à Instituição - MIGUEL FERNANDES FELIPPE - UFJF