Autecological investigations on marine diatoms. 4:Biddulphia aurita (Lyngb.) Brebisson et Godey—A succession of spring diatoms J. W. M. Baars OriginalPaper Pages: 109 - 116
Analysis of the shape of P vs I curves of a natural phytoplankton assemblage during the year in the mesotrophic Lake Maarsseveen (I), The Netherlands Ben J. G. Flik OriginalPaper Pages: 117 - 122
Phytoplankton productivity and chlorophyll-A concentration of Oguta Lake in Southeastern Nigeria C. S. NwadiaroE. O. Oji OriginalPaper Pages: 123 - 131
A preliminary checklist of the phytoplankton of New Calabar River, Lower Niger Delta C. S. NwadiaroE. O. Ezefili OriginalPaper Pages: 133 - 138
Freshwater zooplankton sampling reconsidered: Preliminary results of a high-speed sampling device for small lakes W. R. SwainK. M. Roijackers OriginalPaper Pages: 139 - 152
Diel variation in the egg ratio of rotifers throughout the season (preliminary report) J. RingelbergJ. Steenvoorden OriginalPaper Pages: 153 - 158
Calculations of zooplankton grazing rates according to a closed, steady-state, three-compartment model applied to different14C methods M. H. DaroM. A. Baars OriginalPaper Pages: 159 - 170
Littoral sand zoobenthos and its relation to organic pollution in Lake Nemi (Central Italy) Luciana Mastrantuono OriginalPaper Pages: 171 - 178
Impedance conversion as a method of research for assessing behavioural responses of aquatic invertebrates F. HeinisW. R. Swain OriginalPaper Pages: 183 - 192
Observations on the seasonal and yearly occurrence and the distribution ofAtyaephyra desmaresti (Millet, 1831) (Crustacea, Decapoda, Natantia) in The Netherlands F. W. B. Van Den BrinkG. Van Den Velde OriginalPaper Pages: 193 - 198
Distribution of macroinvertebrates in the shallow part of ‘De Gijster’, a water storage lake in the Biesbosch (The Netherlands) Jolanda HuismanL. W. C. A. van Breemen OriginalPaper Pages: 199 - 206
The behaviour of Dutch fresh water ecologists in response to environmental concern Jacqueline Cramer OriginalPaper Pages: 207 - 216
