Preface. List of Contributors. Geochemistry of organic carbon in the ocean; E.A. Romankevich, et al. Primary production and decomposition of organic matter in coastal areas of the Northern Aral Sea, with special reference to land-sea interactions; M.I. Orlova. Biogeochemistry of water and sediment in the Ob and Yenisey estuaries; V.V. Gordeev. The continental-ocean boundary as a marginal filter in the world oceans; A.P. Lisitzin. Unjustifiably ignored: reflections on the role of benthos in marine ecosystems; W.E. Arntz, et al. Understanding small-scale processes controlling the bioavailability of organic contaminants to deposit-feeding benthos; T.L. Forbes. The role of the marine gastropod Cerithium vulgatum in the biogeochemical cycling of metals; A. Nicolaidou, J.A. Nott. Changes in macrozoobenthos communities induced by anthropogenic eutrophication of the Gulf of Gdansk; A. Szaniawska, et al. Do benthic animals control the particle exchange between bioturbated sediments and benthic turbidity zones? G. Graf. Impact of catchment land-use on an estuarine benthic food web; D. Raffaelli. Natural variability and the effects of fisheries in the North Sea: towards an integrated fisheries and ecosystem management? M.J.N. Bergman, H.J. Lindeboom. Community composition of tidal flats on Spitsbergen: consequence of disturbance? J.M. Weslawski, M. Szymelfenig. The problem of scale: uncertainties and implications for soft-bottom marine communities and the assessment of human impacts; S.F. Thrush, et al. Understanding the sea floor landscape in relation to impact assessment and environmental management in coastal marine sediments; R.N. Zajac. Conclusions and Recommendations; J.S. Gray, et al. Index.