Foreword. Introductory paper: Are phytoplankton dynamics in rivers so different from those in shallow lakes? C.S. Reynolds, J.-P. Descy, J. Padisák. Contributions: The long, the short and the stalled: on the attributes of phytoplankton selected by physical mixing in lakes and rivers; C.S. Reynolds. Meroplankton dynamics in a saline, turbulent, turbid shallow lake (Neusiedlersee, Austria and Hungary); J. Padisák, M. Dokulil. An elementary, structural analysis of river phytoplankton; C. Rojo, M. Alvarez-Cobelas, M. Arauzo. Algal assemblages from shallow lakes of the Salado River basin (Argentina); I. Izaguirre, A. Vinocur. Environmental control of phytoplankton productivity in turbulent turbid systems; M.T. Dokulil. Origin and succession of Phytoplankton in a river-lake system (Spree, Germany); J. Köhler. Cyanophycean blooms in the reservoir of Val Joly (Northern France) and their development in downstream rivers; J. Prygiel, M. Leitao. Main characteristics of the phytoplankton of the Southern Hungarian section of the River Danube; A. Schmidt. Comparative analysis of fifteen lowland fluvial systems of the River Plate basin (Argentina); I. O'Farrell. Modelling phytoplankton development in whole drainage networks: the RIVERSTRAHLER Model applied to the Seine river system; G. Billen, J. Garnier, Ph. Hanset. Development and ecological importance of phytoplankton in a large lowland river (River Meuse, Belgium); J.-P. Descy. Silica-scaled chrysophytes (Synurophyceae) from some rivers and shallow lakes in Hungary; K.T. Kiss, J. Kristiansen. Ecological observations on Skeletonema potamos (Weber) Hasle in the River Danube, near Budapest (1991--92): daily investigations; K.T. Kiss, É. Ács, A. Kovács. Shallows of the lower Danube asadditional sources of potamoplankton; M.P. Stoyneva. The phytoplankton community of the River Meuse (Belgium): seasonal dynamics (1992) and the possible incidence of zooplankton grazing; V. Gosselain, J.-P. Descy, E. Everbecq. Bloom formation of Gloeotrichia echinulata and Aphanizomenon flos-aquae in a shallow, eutrophic, Danish lake; B.A. Jacobsen. Phytoplankton dynamics in a shallow, hypertrophic reservoir (Lake Arancio, Sicily); R. Barone, L. Naselli-Flores.
