Estudo sazonal de parâmetros físico-químicos em lagos na região sul do Amazonas

Abstract

The natural surface water resource requires a better understanding of lake waters. In this way, we sought, through this study, to show the seasonality of the physical-chemical parameters in six lakes that are located in the southern region of the Amazon, namely, Lake Pupunha, Lake Puruzinho, Lake Crato, Lake Buiuçu, Lake Segundo, Lake Banheiro. The study took place during the rainy season, starting in (November 2021), and being concluded in the dry season, in October 2022. In the waters of the lakes, physical parameters such as temperature, pH, electrical conductivity, oxygen dissolved, total solids, oxygen saturation. A comprehensive and systematic study for the seasonal pattern of major ions (nitrate, sulfate, phosphate, sodium, potassium, calcium, magnesium). Statistical data are nonlinear homoscedastic for Kolmogorov-Smirnov test. Statistical correlation and temporal analysis of the physical chemical parameters of the six lakes were recorded. The result of this study showed an increase in the concentration of STD and a decrease with an increasing trend of dissolved oxygen for the dry and rainy season. There was a variation of potassium and magnesium cations for Crato and Puruzinho lakes for the rainy season, for phosphate and sulfate anions similarity in the dry season for Crato, Buiuçu, Puruzinho lakes. In this work, the rainy season and the dry season will be able to establish elevation and decline of the water levels of these lakes, even when they are connected or not, as a result, changing the concentrations of salts and metals, on the other hand, accompanied by physical measurements with the same feature.