Evaluation of Chemical and Physico-Chemical Indicators of Water and Bottom Macrofauna the Starzyc Lake on the Basis of the European Union Water Framework Directive

Abstract

Have studied lake close to neutral pH 7.70 to 7.74. All lakes in accordance with the classification of the European Union Water Framework Directive have been included in the first class. Studies have shown a diverse water quality in lakes in relation to tested indicators. By analyzing the average annual values can be noted that the pH of the water, the O2diss and the concentration of NH4+, NO2ˉ, NO3ˉ, PO43-diss showed a relatively small variation in all investigated Lakes. The level of the total suspended solids in Starzyc lake the peasant was on level II class. The concentration in the surface layer of Ptot. Lake is little differentiated, is at level II and III quality class according to the classification of the European Union Water Framework Directive. In the case of nitrogen-compounds nitrates and nitrites values for these indicators were at level I and II class in all the surveyed lakes in accordance with the classification of the European Union Water Framework Directive. In 2008 attendance related macrofauna test bed showed that the most common they were mud-eating and larvae chironomids, oligochaeta (F = 100 %), which consisted of Tischlera classification of the species is absolutely solid. Among larvae of Chironomidae the species is absolutely integral were Chironomus f. l. plumosus (F = 100 %). However Chaoborus sp. belong to the accesoric species. Other designated species of fauna were accidental species of benthic (F) = 25 %. In 2009 attendance related macrofauna test bed showed that the most common they were mud-eating and larvae chironomids, oligochaeta (F = 100 %), which consisted of Tischlera classification of the species is absolutely solid. Among larvae of Chironomidae the species is absolutely integral were Chironomus f. l. plumosus (F = 100 %). However Asellus aquaticus Racov. and Chaoborus sp. belong to the accesoric species. Other designated species of fauna were accidental species of benthic (F) = 25 %. Fauna of the Starzyc Lake bottom during summer stagnation was poor in terms of quality, which proves its considerable biological degradation. In terms of the concentration in the test macrozoobenthos Lake dominated and Oligochaeta, Diptera larvae.