Concentrations of macronutrients in dominant aquatics of the lake Provala (Vojvodina, Yugoslavia)
2001
Pajevic, S.P. | Stankovic, Z.S. | Vuckovic, M.S. (Faculty of Natural Sciences, Novi Sad (Serbia and Montenegro). Institute of Biology)
Nutrients and trace metals, accumulated in macrophyte tissues are an important indicator of water quality. In this study the concentrations of macronutrients (N, P, K, Ca) and Na in the most common submerged and floating aquatic plants, Ceratophyllum demersum L., Myriophyllum spicatum L. and Nymphoides flava Hill. of Lake Provala (Vojvodina, Yugoslavia) were determined. Analyses were done during the seasonal biomass peak (June - August) in two years 1996 and 1998. Chemical analyses showed significant differences in element content between the analyzed aquatics. Significantly higher ash and Ca content in submerged when compared to floating aquatic plants was found. Only small variations of investigated macroelements as related to the year of investigation, except for calcium showing significantly higher 1998 values, were recorded. The results suggest that Lake Provala belongs to beta - mesosaprobic waters with moderate pollution and standard odor.
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