The influence of seasonal light variations on the growth of Sphaerotilus natans Kl. Mechsner OriginalPaper Pages: 193 - 197
Elevated planktonic rotifer biomass in acidified metal-contaminated lakes near Sudbury, Ontario N. D. YanW. Geiling OriginalPaper Pages: 199 - 205
The influence of nitrate on the phosphorus flux to and from oxygen depleted lake sediments Torbjörn TirénKurt Pettersson OriginalPaper Pages: 207 - 223
A model for rapid growth evaluation in fishes: the case of the Cyprinids of some large French rivers J. MoreauA. BelaudA. Nelval OriginalPaper Pages: 225 - 227
Microrépartition des populations de truite commune (Salmo trutta L.) de juvenile de saumon atlantique (Salmo salar L.) et des autres espès préntes dans la partie haute du Scorff (Bretagne) J. L. BagliniereD. Arribe-Moutounet OriginalPaper Pages: 229 - 239
Alto Sinú hydroelectric project in Colombia: possible consequences for the environment P. Leentvaar OriginalPaper Pages: 241 - 248
Carnivorous and detritivorous feeding of Mesocyclops leuckarti Claus (Cyclopoida Copepoda) Katarzyna Papirńska OriginalPaper Pages: 249 - 257
Revision and phylogenetic systematics of the Desmoscolecida (Nematoda) Wilfrida Decraemer OriginalPaper Pages: 259 - 283