p. 147 - 157 SUR LE ROLE DES COMPOSANTES BIOCHIMIQUES DU MILIEU MARIN DANS LES PROCESSUS DE TRANSFORMATION DES SUBSTANCES COMPLEXES ET DANS LE FONCTIONNEMENT DES ECOSYSTEMES MARINS Natalia Rosoiu, Victoria Smocov et Maria Panait Institute Roumain de Recherches Marines Constanta Abstract The biochemical research of the marine environment are particularly important in ecological and biochemical monitoring of the marine living resources from the area of the active influence of the hydro- meteorologic factors and pollution. All living organisms of the ecosystem are closely interdependent among themselves and the sur- rounding environment forming communities which produce and consume organic matter. In formation of the dissolved metabolits from sea water, glucides, proteins, polypeptides, aminoacids, enzymes, vitamines and hormons do contribute. The preliminary results ref- fering to the above mentioned biochemical compounds are particularly useful in stressing the spatio-temporal variations of the physical, biochemical and biological factors which are influenced by anthropic factors. Aiming to form a conceptual strategy of marine environment protection and to integrally interpret the results we will carry on our investigations.