The Dahlem konferenzen, S.Bernhard; introduction, W.G.Characklis and P.A.Wilderer; structure and function of biofilms, P.A.Wilderer and W.G.Characklis; hydrodynamics and solute transport at the fluid-biofilm interface, A.B.Cunningham; particle transport and attachment, K.D.Stolzenbach; detachment from biofilms, B.E.Rittmann; biofilms on water-insoluble substrates, E.Rosenberg; group report - exchange processes at the fluid-biofilm interface, C.J.Gantzer et al; modeling population dynamics, O.Wanner; modeling population dynamics, O.Wanner; modeling spatial gradients, J.W.T.Wimpenny et al; microsensors - spatial gradients in biofilms, N.P.Revsbech; molecular probes for analysis of microbial communities, D.M.Ward; group report - spatial distribution of biotic and abiotic components in the biofilm, M.Walch et al; minority opinion - biofilms as dynamic transport-reaction systems, E.N.Lightfoot; relative activities of cells in suspension and in biofilms, W.A.Hamilton and W.G.Characklis; comparative physiology of biofilm and suspended oragnisms in the groundwater environment, J.M.Kolbel-Boelke and P.Hirsch; modeling nutrient flux through biofilm communitites, J.I.Prosser; transformation of xenobiotics in biofilms, E.J.Bouwer; group report - cellular physiology and interactions of biofilm organisms, L.J.Stal et al; the aquatic chemistry of trace metals in biofilms, F.M.M.Morel and B.Palenik; metal dissolution/redox in biofilms, H.A.Videla; susceptibility of biofilms to toxic compounds, W.W.Nicholas; microbial and enzymic activities in soil biofilms.