p. 133 - 145 LE DEVELOPPEMENT ALGUES MACROPHYTES LE LONG DU LITTORAL ROUMAIN PENDANT LES ANNEES 1977 ET 197 Hilarius V.Skolka, Florian Vasiliu, Alexandru S. Bologa Institute Roumain de Recherches Marines Constanta Abstract Quantitative dynamics of the macrophytic communities along the Romanian Black Sea shores (rocky mid- and infralittoral), during 1977 and 1978, was analysed. The production of seaweeds evinced the following values during 1977: 4,272 g/mp (Agigea), 11,352 g/mp (Eforie Sud) and 14,793 g/mp (Vama Veche). An increase of algal biomasses with depth (3 m) is generally found.