1. Mid-Po River zooplankton

   • Bruno Rossaro

   OriginalPaper Pages: 97 - 105

2. A simple vertical gill net system for variable current conditions

   • Sture Hansson

   OriginalPaper Pages: 107 - 110

3. Factors influencing nitrate depletion in a rural stream

   • Alan R. Hill

   OriginalPaper Pages: 111 - 122

4. Birgean heat budgets and rates of heat uptake in two monomictic lakes

   • Thomas J. Loranger
   • David F. Brakke

   OriginalPaper Pages: 123 - 127

5. Seasonal dynamics of the zoobenthic communities in the mesohaline zone of the Loire estuary (France)

   • Jocelyne Marchand
   • Didier Gascuel

   OriginalPaper Pages: 129 - 139

6. Physical and chemical conditions in an hypersaline spring in the Namib Desert

   • J. A. Day
   • M. K. Seely

   OriginalPaper Pages: 141 - 153

7. Invertebrate drift in the Dan River, Israel

   • J. D. Allan
   • G. N. Herbst
   • Y. Regev

   OriginalPaper Pages: 155 - 163

8. Diel vertical migration of a pelagic amphipod in the absence of fish predation

   • Dean W. Blinn
   • Nevin E. Grossnickle
   • Behrooz Dehdashti

   OriginalPaper Pages: 165 - 171

9. Changes in alkaline phosphatase activity and phosphate uptake in P-limited phytoplankton, induced by light intensity and spectral quality

   • D. Wynne
   • G. -Y. Rhee

   OriginalPaper Pages: 173 - 178

10. Seasonal variations of metabolically active bacteria in a hypertrophic lake (Hartbeespoort Dam, South Africa)

    • Richard D. Robarts
    • Lynne M. Sephton

    OriginalPaper Pages: 179 - 188

11. Life history of a lacustrine ostracod

    • David Strayer

    OriginalPaper Pages: 189 - 191