“…Different biological phenomena such as production fluctuations (Pucher-Petković 1970), changes in phytoplankton species composition (Pucher-Petković et al 1971), higher biomass and a changed zooplankton community composition (Vu<etić 1970) were all observed and related to the stronger inflow from the Mediterranean into the Adriatic. Also, different aspects of interactions between thermohaline properties and phytoplankton and fisheries were recognised in many papers (5upanović 1968, 2krivanić & Zavodnik 1973, Regner & Ga<ić 1974, Pucher-Petković et al 1987, Regner et al 1987, 1988, Marasović et al 1988, Vu<etić & Alegria-Hernández 1988. Studies of longterm changes should take into account eutrophication; however, irrespective of the significantly advanced eutrophication in the Northern Adriatic and in Adriatic coastal waters, recent research has pointed to the fact that climatic fluctuations are still crucial for the Adriatic ecosystem dynamics (Marasović et al 1995).…”