Preface. Notes on ecotone attributres and functions; J. Kolasa, M. Zalewski. Ecotones in Lakes and Reservoirs. Ecotone effects in reservoirs: The land/inland water interface; A. Duncan, J. Kubecka. The role of ecotones as feeding grounds for fish fry in a Bohemian water supply reservoir; J. Matena. Biomass of planktonic crustaceans and the food of young cyprinids in the littoral zone of lake Balaton; A. Simonian, I. Tatrai, P. Biro, G. Paulovits, G. Lakatos. Biomanipulation by ecotone management in a lowland reservoir; M. Zalewski, P. Frankiewicz, M. Nowak. Relationship between the spatial scale and biotic variability in a wetland ecotone; J. Kolasa, L. Weber. Streams. Critical landscape attributes that influence fish population dynamics in headwater streams; I.J. Schlosser. River/land ecotone processes: scales and patterns; G. Bretschko. Riparian ecotones and spatial variation of fish assemblages in Portuguese lowland streams; M.J. Collares-Pereira, M.F. Magalhaes, A.M. Geraldes, M.M. Coelho. Structural variability as an important factor for the conservation of fish species richness in rivers in Switzerland; A. Kirchofer. Ecotones and fluvial regimes in Arctic lotic environments; G. Power, M. Power. Microhabitat use by two small benthic stream fish in a 2nd order stream; D. Zweimuller. Large Rivers and Floodplains. The dependence of fish community structure and dynamics on floodplain and riparian ecotone zone in Parana River, Brasil; A. Agostinho, M. Zalewski. An outline of lateral fish migrations within the Central Delta of the Niger River, Mali; V. Benech, M. Penaz. The influence of high waters on stream fish populations in regulated rivers (Abstract); T. Spindler. Extension androle for fish populations of riverine ecotones along the Sinnamary River (French Guiana); L. Tito de Morais, M. Lointier, M. Hoff. Management Aspects of Streams and Rivers. Standards river restoration concepts must meet; S. Muhar, S. Schmutz, M. Jungwirth. The effects of recreated instream and ecotone structures on the fish-fauna of an epipotamal river; M. Jungwirth, S. Muhar, S. Schmutz. Effect of removal and regeneration of bankside vegetation on fish population dynamics in the Warta River, Poland; T. Penczak. Effects of siltation on stream fishes and the potential mitigating role of the buffering riparian zone; C.F. Rabeni, M.A. Smale. Evolutionary Aspects. Evolutionary adaptations by fish to ecotonal complexity in spatially variable landscapes -- a perspective; M.M. Coelho, M. Zalewski. The genetic structure of roach populations in two contrasted large rivers; Y. Bouvet, J.L. Maslin, E. Pattee, M. Bobin. The land/inland water ecotones and fish populations of Lake Valley (West Mongolia); Y. Dgebuadze. Zonation of a lentic ecotone and its correspondence to life history strategies in fish; J. Wanzenboeck, K. Keresztessy. Epilogue: Land/inland water ecotones -- intermediate habitats critical for conservation and management; F. Schiemer, M. Zalewski, J. Thorpe.