p. 101 - 115 SUR LE DINAMIQUE DU ZOOPLANCTON DES COTES ROUMAINES DE LA MER NOIRE, PENDANT LES ANNEES 1974-1975 Adriana Petran Institut Roumain de Recherches Marines Constanta Abstract On the basis of 357 samples collected in the years 1974 and 1975, some characteristics of the zooplankton structure and quantity in front of Romanian Black Sea coast are presented in the paper. The density and biomass variations of different zooplanktonic groups depending on the environment conditions are analysed. In the two years of observations both the features of hydrological factors and the strong phenomenon of water blooming induced by Exuviaella cordata influenced to a great extent the zooplankton development.