INFLUENCE OF CLIMATIC FACTORS ON SPORTS-FISHING WATER QUALITY

Abstract

This study aimed to evaluate the influence of climatic factors during summer and winter seasons on water quality in different sports-fishing of Dracena city. Water collects were realized each three days in different sports-fishing. Correlation between climatic variables and water parameters was high just for water temperature and room temperature maximum and minimum. During summer, were observed 27.1 ± 0.4ºC for water temperature, 8.4 ± 1.3 mg/L for dissolved oxygen concentration, 8.0 ± 0.1 for pH, 56.4 ± 44.5 cm for transparency, 70.4 ± 39.1 mg CaCO₃/L for total alkalinity and 0.142 ± 0.094 mg/L for ammonia total. On winter, 22.4 ± 0.3ºC for water temperature, 9.6 ± 3.3 mg/L for dissolved oxygen concentration, 7.7 ± 0.1 for pH, 78.7 ± 52.7 cm for transparency, 78.5 ± 41.1 mg CaCO₃/L for total alkalinity and 0.159 ± 0.227 mg/L for ammonia total. Although were observed significant differences (P<0.05) on water parameters in summer and winter and depending on structural features of each sports-fishing, all were able to tropical fish production throughout the year.