p. 147 - 171 LA REPARTITION ET LA DYNAMIQUE DU PHYTOPLANKTON SUR LA PLATE-FORME CONTINENTALE ROUMAINE AU COURS DES ANNEES 1980-1981 V.H. SKOLKA et Anca Roban Institute Roumain de Recherches Marines Constanta Abstract The paper presents the space distributions and the time dynamics of the phytoplankton above the Romanian shelf till to the 31 degree Meridian in 1980 and 1981. A number of 126 phytoplanktonic species belonging to six systematic groups are identified. The average biomasses values are 2.767 mg/mc in 1980 and 1.391 mg/mc as compared to 1.065 mg/mc in 1979. The recorded quantities are a proof of the fertilising role played by the Danube river waters.