p. 67 - 75 LE PHOSPHORE ANORGANIQUE, LE SILICIUM ET LES SUSPENSIONS TOTALES TRANSPORTEES PAR LA DANUBE DANS LA MER NOIRE DANS LA PERIODE 1974-1977 Ioan Pecheanu, Radu Mihnea, Octavian Serbanescu et Elvira Cuingioglu Institut Roumain de Recherches Marines Constanta Abstract The paper is presenting the evolution in time of phosphorus, silicon and total suspensions brought into the Black Sea by the Danube waters in the period 1974-1977. The high level of agricultural and industrial development and of urbanization lead to the growth of the phosphorus quantities. Works on regulations of the river Danube and its affluents have determined the diminution of silicon and total suspensions quantities.