Part 1 Ecosystem structure and trophic interactions: habitat partitioning by zooplankton and the structure of lake ecosystems, M.A. Leibold, A.J. Tessier; New Zealand mountain stream communities - stable yet disturbed?, M.J. Winterburn; complex trophic interactions in freshwater bethnic food chains, C. Bronmark, J. Dahl, L. Greenberg; prey dispersal and predator impacts on stream bethnic prey. Part 2 Aspects of life-history evolution: rotifer life history strategies and evolution in freshwater plankton communities, N. Walz; the evolution and genetics of maturation in Daphnia, D Ebert; optimal energy allocation tactics and indeterminant growth - life-history evolution of long-lived bivalves, J. Jokela. Part 3 Population biology and reproductive modes; ecology and genetics of interspecific hybridisation in Daphnia, K. Schwenk, P. Spaak; population biology, genetic structure, and mating system parameters in freshwater snails, T. Stadler, P. Jarne; evolution and ecological correlates of uniparental and biparental reproduction in freshwater snails, S.G. Johnson, C.M.Lively, S.J. Schrag; genetic similarity, parasitism, and metapopulation structure in a freshwater bryozoan, B Okamura. Part 4 Evolutionary processes following colonizations: evolutionary consequences of postglacial colonization of fresh water by primitively anadromous fishes, M.A. Bell, C.A. Andrews.