The International Symposium on Trophic Relationships in Inland Waters, held from 1st-4th September 1987, at the Balaton Limnological Research Institute of the Hungarian Academy of Sciences, Tihany (Hungary), was intended to give an insight into current research on limnology of inland waters. The meeting was organized on the occasion of the 60th anniversary of the Institute in order to promote the exchange of ideas and discussion of new results. Papers presented during the Symposium dealt with four main topics: (1) Interactions of inorganic nutrients, primary producers and bacteria, (2)...