Introduction. The estuarine ecosystem / F. John Vernberg -- Microbial and environmental transitions in estuaries / Claude E. ZoBell -- The use of selective and differential media in the analysis of marine and estuarine bacterial populations / Darrell B. Pratt and John W. Reynolds -- Isolation of myxobacteria from marine habitats in the U.S. Virgin Islands / Ellis R. Brockman -- Gas chromatographic analysis of denitrification by marine organisms / W.J. Payne -- Determination of total microbial biomass by measurement of adenosine triphosphate / Osmund Holm-Hansen -- The use of numerical taxonomy in estuarine microbial ecology / R.R. Colwell -- The application of scanning electron microscopy to estuarine microbial research / R.L. Todd, W.J Humphreys, and E.P. Odum -- The raison d'ãetre of in situ microbial activity studies / Lawrence J. Albright and James W. Wentworth -- Distribution and activity of proteolytic bacteria in estuarine sediments / Ronald K. Sizemore, L. Harold Stevenson, and Bruce H. Hebeler -- Interactions of amino acids and marine bacteria / Carol D. Litchfield -- Utilization of dissolved organic compounds by microorganisms in an estuary / C.C. Crawford, J.E. Hobbie, and K.L. Webb -- Monosaccharide and disaccharide interactions on uptake and catabolism of carbohydrates by mixed microbial communities / Lindsay W. Wood -- Some difficulties in using 14C-organic solutes to measure heterotrophic bacterial activity / Richard T. Wright -- Salinity and temperature interactions and their relationship to the microbiology of the estuarine environment / Richard Y. Morita ... [et al.] -- An ecological survey of open ocean and estuarine microbial populations. 1, The importance of trace metal ions to microorganisms in the sea / Galen E. Jones -- An ecological survey of open ocean and estuarine microbial populations. 2, The oligodynamic effect of nickel on marine bacteria / Edward R. Gonye Jr. and Galen E. Jones -- The oceanography of Block Island Sound. Part 1, Sampling / James E. Alexander, Rudolph Hollman, and Steven A. Fisher -- Asking microorganisms to classify their environment / E.H. Anthony and G. Vilks -- Effects of thermal effluent on the microbiology and chemistry of the Connecticut River / John D. Buck -- Ecological evaluation of an estuary receiving treated sewage effluent prior to a major flow increase / E. Charles Pilcher and John D. Buck -- Bacterial treatment of oil spills : some facts considered / Paul A. LaRock and Merrily Severance -- Environmental effects of pulp mill wastes / M.L. Quammen, P.A. LaRock. and J.A. Calder -- Methods and techniques for the isolation and testing of Clostridia from the estuarine environment / Jack R. Matches and John Liston -- Phytoplankton cycle of Goose Creek, New York / Joseph M. Cassin and John J.A. McLaughlin -- The fate of freshwater algae entering an estuary / John W. Foerster -- The in vivo measurement of chlorophyll by fluorometry / Dale A. Kiefer -- Effects of environmental stress on aquatic yeast populations / Donald G. Ahearn -- Variations in soil fungus populations in a South Carolina salt marsh / G.T. Cowley -- Fungi associated with the degradation of mangrove (Rhizophora mangle L.) leaves in south Florida / Jack W. Fell and I.M. Master -- Succession and role of fungi in the degradation of red mangrove seedlings / Steven Y. Newell -- Nematological-microbial interrelationships and estuarine biodegradative processes / Samuel P. Meyers and Bruce E. Hopper -- Interrelationships between bacteria and protozoa / Robert D. Hamilton -- Estuarine meiofauna, a review : trophic relationships and microbial interactions / Bruce C. Coull -- Bacteria as potential nutritional resources for three sympatric species of tubificid oligochaetes / K.E. Chua and R.O. Brinkhurst -- Summations.