The Ecology of Regulated Streams

The idea for an international symposium on regulated streams was conceived over an open-faced sandwich at the R&dhus in Copenhagen when we attended the Congress of the Societas Internationalis Lim­ nologiae in summer 1977. Although· we were aware that various colleagues were working on ecological problems in reservoir tailwaters, we did not fully comprehend the magnitude of worldwide stream regu­ lation nor the extent of interest in the subject. Such revelations are reflected in the 21 pape...