<b>Temporal variation of limnological factors in the Upper Paraná River floodplain habitats</b> - DOI: 10.4025/actascibiolsci.v26i3.1538

Abstract

The seasonal variation of limnological variables was monitored in four habitats in the Upper Paraná River floodplain, from March 2000 to March 2001. The measured variables were temperature, depth, Secchi transparency, pH, electrical conductivity, total alkalinity, turbidity, dissolved oxygen, total suspended matter, nitrate-N, nitrite-N, ammoniac-N, total nitrogen, reactive soluble phosphorus, dissolved phosphorus, total phosphorus, dissolved organic carbon and chlorophyll α. During the seasonal variation, the pluviometric precipitation and water levels were also considered. The results indicated absence of homogenization, as detected in previous studies, absence of seasonality of some factors (e.g., conductivity and alkalinity), and a strong influence of the pluviometric precipitation upon the limnological factors dynamic, especially in the nutrient inputs