1. Mineralization of dissolved organic phosphorus from a shallow eutrophic lake

   • J. E. Cooper
   • J. Early
   • A. J. Holding

   OriginalPaper Pages: 89 - 94

2. Specific diversity and community structure of Rotifera in a salinity series of Ethiopian inland waters

   • J. Green
   • Seyoum Mengestou

   OriginalPaper Pages: 95 - 106

3. Physical and chemical characters, phytoplankton and primary production of Ezequiel Ramos Mexía Reservoir (Argentina)

   • Aldo Mariazzi
   • Victor Conzonno
   • Hector Labollita

   OriginalPaper Pages: 107 - 116

4. Contribution of picoplankton to primary production in estuarine, coastal and equatorial waters of Brazil

   • C. Teixeira
   • S. A. Gaeta

   OriginalPaper Pages: 117 - 122

5. Emergence of the damselfly Pyrrhosoma nymphula (Sulzer) (Zygoptera: Coenagrionidae) from two adjacent ponds in northern England

   • Simon D. Gribbin
   • David J. Thompson

   OriginalPaper Pages: 123 - 131

6. Snail cadavers as sources of short-chain carboxylic acids to scavenging freshwater invertebrates

   • P. W. G. Daldorph
   • J. D. Thomas

   OriginalPaper Pages: 133 - 140

7. Freshwater snails of São Tomé, with special reference to Bulinus forskalii (Ehrenberg), host of Schistosoma intercalatum

   • D. S. Brown

   OriginalPaper Pages: 141 - 153

8. A portable chamber for measuring algal primary production in streams

   • Randall L. Fuller
   • James B. Bucher

   OriginalPaper Pages: 155 - 159

9. The discrimination of roach Rutilus rutilus (Linnaeus, 1758) populations in different parts of a river system. An investigation using biochemical markers

   • Yvette Bouvet
   • Kadarwan Soewardi
   • Eric Pattee

   OriginalPaper Pages: 161 - 167

10. Anuraeopsis miraclei, a new planktonic rotifer species in karstic lakes of Spain

    • Walter Koste

    OriginalPaper Pages: 169 - 173