p. 117 - 125 DONNEES CONCERNANT LE ZOOPLANCTON DE LA ZONE PREDELTAIQUE DE LA MER NOIRE Adriana Petran et Teodora Onciu Institute Roumain de Recherches Marines Constanta Abstract On the basis of 276 samples collected during the years 1973, 1974 and 1976 from the marine area in front of the Danube Delta, the features of zooplankton populations are presented in the paper. In the last years an increase of the density and biomass of some important zooplanktonic groups (meroplankton and Cladocera) has been recorded. Consequently, the trophic potential of the Romanian predeltaic area is high.