Banca de DEFESA: AERTON DE ANDRADE BEZERRA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : AERTON DE ANDRADE BEZERRA
DATE: 22/02/2022
TIME: 09:00
LOCAL: Videoconferência
TITLE:

ANALYSIS ON THE CONSERVATION STATUS OF SPRINGS IN THE MUNICIPALITY OF OLHO D’ÁGUA DO CASADO, ALAGOAS

KEY WORDS:

Springs, Semiarid, Water Quality, Conservation.

PAGES: 162
BIG AREA: Ciências Humanas
AREA: Geografia
SUMMARY:

The springs in the semiarid region, in addition to their environmental characteristics and qualities, have socio-environmental actions that operate directly in changing the conservation status of the springs. The study area is located in the municipality of Olho D'Água do Casado, in the Mesoregion of Alagoas and in the Alagoas microregion of the Sertão do São Francisco, the springs are inserted in these circumstances, where the low level of water related to the environmental situation of the place and the anthropic actions have been causing problems of environmental degradation. Faced with these questions, the general objective of the research was to carry out a study aiming at an analysis of the state of conservation of the springs. The method that conducted the study was the experimental one, with a quantitative and qualitative approach. Bibliographic and documentary studies were carried out, water collections were carried out for analysis of the physical parameters: Total Dissolved Solids (mg/L), Electrical Conductivity (µS/cm), Turbidity (NTU) and Temperature (°C), chemicals: Hydrogen Potential (pH ), Biochemical Oxygen Demand (mg/L), Dissolved Oxygen (mg/L), Total Phosphorus (mg/L), Total Nitrogen (mg/L) and biological: Thermotolerant Coliforms (NMT) in the laboratory, with collection in the December 2020 referring to the dry season and the month of May 2021 referring to the rainy season. Sediments were also collected for sedimentological analysis in October 2020, the identification of water courses and the mapping of the springs, geological maps and land use and occupation maps were prepared, characterization regarding the continuity and the development of an educational booklet , aimed at improving the relationship between society and nature and the presentation of the activities carried out by the project in the period 2018/2021. The results showed that the analyzed springs presented perenniality during the researched years, in accordance with the physical, chemical and biological parameters through the seasonality of the dry and rainy seasons. Some samples showed values above the reference limit established by government agencies. The analyzes found a strong presence of Thermotolerant Coliforms, Biochemical Oxygen Demand, Total Phosphorus, Total Nitrogen, Electrical Conductivity, Total Dissolved Solids and Turbidity, due to a greater contamination by domestic sewage and accumulation of sediments in the urban area and a greater amount of organic material in the rural area in the rainy season. The pH in the two collections was shown to be low with a very accentuated water acidity. Dissolved Oxygen was the only one that was within the established values, since the Temperature fluctuated in both seasonal regimes. An intense human presence is evident in the place, increasing the use and occupation in Permanent Protection Areas (APP), presenting a very worrying degradation. The sedimentological data at the Fonte da Matinha (NU1) and Pau-ferro (NR6) springs indicated a predominance of the sand fraction, with a strong presence of quartz. It appears that the methodology used in this research is effective in the study of conservation of the six springs studied, three in urban environments and three in rural areas, the urban ones are unsuitable for human and animal consumption, while those in the rural area unsuitable for human use, showing that the most degraded springs were NU1 and NR6.

BANKING MEMBERS:
Presidente - 1717255 - ANA PAULA LOPES DA SILVA
Externo ao Programa - 2568449 - JORGE LUIZ LOPES DA SILVA
Interna - 1121254 - ROCHANA CAMPOS DE ANDRADE LIMA SANTOS