engleski

Zooplankton in the dam reservoirs Hazna and Vidara, Bosnia and Herzegovina

Dam reservoirs Hazna and Vidara were constructed in 1967 with the purpose of preventing flooding of the lowlands in the Gradašnica river basin, and the communities and industrial zone around the town of Gradačac. They were the result of conversion of the streams Hazna and Vidara. The average lenght of the reservoir Hazna is about 1000 m, and its width is approximately 200 m. Total volume is about 630 000 m3. The maximum depth of the reservoir is 17 m, while the average depth is 3 m. The size of the Hazna basin area is about 10 km2. The dam reservoir Vidara is 2 km far from Hazna. The average lengh is 1500 m, its width is 350 m. The reservoir volume is 3 440 000 m3. The maximum depth of the reservoir is 17 m, while the average depth 6.7 m. The basin area is over 20 km2. Water quality was investigated to determine whether the water of the reservoirs could be used for drinking. The biological and bacteriological quality of the water and its physico-chemical characteristics were studied. This paper mainly deals with zooplankton community which is an important group for the trophic degree estimation.

dam reservoirs; zooplankton; trophic state; nutrients

Rad je kao poster prezentiran na skupu XXIX Congress of International association of Theoretical and applied limnology, održanom od 08.-14.08.2004., Lahti, Finska.