cochlearis. In central part of reservoir Polyarthra
vulgaris has also considerable population density.
The highest population density among Cladocera
belong to species Bosmina longirostris, specially
in the middle of the central part of reservoir and
Moina micrura at the bottom. The decrease of
taxa number has been noted at the entrance of
reservoir and considerable reduction of zooplankton density compared to two previous localities
The outsending species by number of individuals is Keratella quadrata from Rotatoria group and species Daphnia galeata from Cladocera group. From Copepoda, Acanthocyclops robustus
has been present considerably (19,334 ind. m−3
)on the bottom, at the dam. Species Carchesium polypinum had the highest density population within Protozoa group. However, diversity obtained by these unique samples should be taken with
great care.