1. Evaluation of the polluted river Savinja with the help of macrophytes

   • Danijel Vrhovšek
   • Andrej Martinčič
   • Metka Kralj

   OriginalPaper Pages: 97 - 110

2. Phytoplankton of four rivers, the Tyne, Wear, Tees and Swale

   • N. T. H. Holmes
   • B. A. Whitton

   OriginalPaper Pages: 111 - 127

3. Nitrogen and phosphorus recycling in Lake Sammamish, a temperate mesotrophic lake

   • Peter B. Birch
   • Dimitris E. Spyridakis

   OriginalPaper Pages: 129 - 138

4. Potential impact of size-selective planktivory on phosphorus release by zooplankton

   • Steven M. Bartell

   OriginalPaper Pages: 139 - 145

5. Investigations into the occurrence of midge plagues in the vicinity of Harderwijk (Netherlands)

   • D. M. Beattie

   OriginalPaper Pages: 147 - 159

6. The crustacean zooplankton of Mali (West Africa)

   • Henri J. Dumont
   • Jeannine Pensaert
   • Isa Van de Velde

   OriginalPaper Pages: 161 - 187

7. A portable pump sampler for lotic periphyton

   • James A. Hamala
   • Scott W. Duncan
   • Dean W. Blinn

   OriginalPaper Pages: 189 - 191