Introduction. Major biological processes in European tidal estuaries; C. Heip, P. Herman. Primary production. Nutrients, light and primary production by phytoplankton and microphytobenthos in the eutrophic, turbid Westerschelde estuary (the Netherlands); J. Kromkamp, et al. Dynamics of microphytobenthic chlorophyll-a in the Scheldt estuary (SW Netherlands); D.J. de Jong, V.N. de Jonge. Bacterial processes. Comparison of heterotrophic bacterial production in early spring in the turbid estuaries of the Scheldt and the Elbe; N.K. Goosen, et al. Nitrous oxide emissions from estuarine intertidal sediments; J.J. Middelburg, et al. Carbon and nitrogen cycling in intertidel sediments near Doel, Scheldt estuary; J.J. Middelburg, et al. Zooplankton. Copepod feeding in the Westerschelde and the Gironde; M. Tackx, et al. Long-term changes in eurytemora affinis population (copopoda, calanoids) in the Gironde estuary (1978-1992); J. Castel, et al. Contribution of the zooplankton copepod communities to the carbon fluxes in the brackish part of the Westerschelde estuary (the Netherlands); V. Escaravage, K. Soetaert. Feeding rates and productivity of the copepod Acartia bifilosa in a highly turbid estuary; the Gironde (SW France); X. Irigoien, J. Caste. Production rates of Eurytemora affinis in the Elbe Estuary, comparison of field and enclosure production estimates; A. Peitsch. Comparative spring distribution of zooplankton in three macrotidal European estuaries; B. Sautour, J. Castel. Hyperbenthos. Comparative study of the hyperbenthos of three European estuaries; J. Mees, et al. Meiobenthos. Effects of experimental food supply on estuarine meiobenthos; M.C. Austen, R.M. Warwick. Meiobenthic distributionand nematode community structure of five European estuaries; K. Soetaert, et al. Macrobenthos. The response of two estuarine benthic communities to the quantity and quality of food; M.A. Kendall, et al. Modelling. Estimating estuarine residence times in the Westerschelde (the Netherlands) using a simple box model; K. Soetaert, P.M.J. Herman. Nitrogen dynamics in the Westerschelde estuary (SW Netherlands) estimated by means of a global ecosystem model (MOSES); K. Soetaert, P.M.J. Herman. Carbon flows in the Westerschelde estuary (the Netherlands) evaluated by means of a global ecosystem model (MOSES); K. Soetaert, P.M.J. Herman.