A sketchy outline of the fate of organic matter in the Dutch Wadden Sea J. H. Vosjan OriginalPaper Pages: 127 - 132
Depth variations in the chemistry of Oguta Lake in Southeastern Nigeria C. S. Nwadiaro OriginalPaper Pages: 133 - 139
Differentiation betweenPhaeocystis pouchetii (Har.) Lagerheim andPhaeocystis globosa Scherffel J. JahnkeM. E. M. Baumann OriginalPaper Pages: 141 - 147
Nutrients and phytoplankton primary production in the marine tidal Oosterschelde estuary (The Netherlands) F. VegterP. R. M. De Visscher OriginalPaper Pages: 149 - 158
Species richness of aquatic macrophyte communites in Central Canada Eva Pip OriginalPaper Pages: 159 - 165
Plant biomass and nutrient levels of a tropical macrophyte (Cyperus papyrus L.) receiving domestic wastewater Francis M. M. Chale OriginalPaper Pages: 167 - 170
Effects of weed control on species composition of aquatic plants and bank plants and macrofauna in ditches B. Beltman OriginalPaper Pages: 171 - 179
The macroinvertebrate fauna of littoral and bottom substrata as a tool for biotypology of Frisian waters T. H. L. Claassen OriginalPaper Pages: 181 - 191
The effect of heated effluent on the occurrence and the reproduction of the freshwater limpetsAncylus fluviatilis Müller, 1774,Ferrissia wautieri (Mirolli, 1960) andAcroloxus lacustris (L., 1758) in two Dutch water bodies R. H. HadderinghG. Van Der VeldeP. G. Schnabel OriginalPaper Pages: 193 - 205
Effects of stormwater sewer discharges on the aquatic community in urban canals in Lelystad C. RoosE. J. B. Uunk OriginalPaper Pages: 207 - 212
Chironomids as water quality indicators in the River Mignone (Central Italy) Marcello BazzantiFranco Bambacigno OriginalPaper Pages: 213 - 222
The scope of mission-orientation in Dutch fresh-water ecology Jacqueline Cramer OriginalPaper Pages: 223 - 234
