ASSESSMENT OF THE ZOOPLANKTONIC COMMUNITIES IN AQUATIC BASINS IN THE SOUTHERN AREA OF ROMANIA.

In the present work, the results of the assessment of the state of zooplankton communities are presented from different types of water bodies. For the study, water samples were collected and analyzed from three types of water basins: systematic pond (EC 1 lfov and EC 1 Cazaci - SCDP Nucet), semi-systematic pond (Iaz no. 7 Crevedia) and reservoir (Bunget 2). The research was carried out in 2023, and the results highlighted the fact that the composition of the zooplankton in the aquatic ecosystems studied was made up of species belonging to the taxonomic groups: Rotifera, Copepoda and Cladocera. Based on these aspects, the qualitative and quantitative structure of the zooplankton in the studied water basins was established. Were identified 24 taxa (16 taxa - Rotifera, 3 taxa - Copepoda and 5 taxa - Cladocera). The weight of each taxonomic group is different in the three types of ecosystems: in the systematic pond - type water basins, cladocerans predominate (38.7% in EC 1 Cazaci and 44.0% in EC 1 Ilfov), in semi-systematic pond Iaz no. 7 Crevedia rotifers predominate (69.5%) and in Bunget 2 reservoir copepods predominate (49.5%). [ABSTRACT FROM AUTHOR]