Study Regarding Hydrochemical Classification of the main Lakes from Fizeş Watershed (Romania)

Mihăiescu Tania, R. Mihăiescu, E. Muntean, Nicoleta Muntean

Abstract


Regarding to the importance of the ponds is noted an increasing interest in Europe, and also an increase of the awareness on the ponds contribution to biodiversity and proper functioning of the watersheds. Although significant progress was made in establishing generic methodologies of analysis in the purpose of implementing water directive, small water bodies, as lakes and ponds are still insufficient represented. The study area, Fizes watershed, is located in Transylvania Plain, in the northern part of Romania. A distinct characteristic of this watershed is the presence of lake units (natural and artificial). Natural lakes and ponds are a polarizing element, which provides identity for the landscape in Fizes watershed, concentrates the majority of settlements in their close vicinity and also represent a support of economical activities development, from agriculture to tourism.
The objective of the present work is to discuss the major ion chemistry of the main lakes from Fizes watershed. Chemical classification also throws light on the concentration of various predominant cations, anions and their interrelationships. Water lake samples were collected from 11 sampling points covering the area during the years 2007 and 2008 and were analyzed for physical-chemical characters. The system of lake units present distinctive physical-chemical characteristics, influenced by local natural conditions, main factors being climate, morphometric characteristics of lakes, vegetation by shadowing, factors which together with biological conditions and anthropic influences shape the quality conditions of the lake waters. Climatic, hydrological and substrate conditions are reflected in the resulting water quality. The lakes located in the upper part of the watershed can be included in the bicarbonate class, while lakes located in the lower part are closer to sulphate waters.

Keywords


Fizes watershed, lakes, ponds, ion chromatography, anions, cations

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