1. The ecology of the calanoid copepod Eurytemora affinis in salt marsh tide pools

   • Marjolaine Castonguay
   • Gerard J. FitzGerald

   OriginalPaper Pages: 125 - 133

2. Allochthonous input and retention in a small mountain stream, South Africa

   • B. A. Stewart
   • B. R. Davies

   OriginalPaper Pages: 135 - 146

3. Heavy metal and PCB contamination of Bryozoan colonies in the River Meuse (Belgium)

   • V. Henry
   • J. C. Bussers
   • J. P. Thomé

   OriginalPaper Pages: 147 - 152

4. Ordination analysis and bioindices based on zoobenthos communities used to assess pollution of a lake in southern Finland

   • Pekka H. Kansanen
   • Lauri Paasivirta
   • Tarja Väyrynen

   OriginalPaper Pages: 153 - 170

5. Occurrence of Unionicola (Pentatax) macani Gledhill (hydrachnellae, acari) in the prosobranch mollusc Lanistes ovum Peters in Ajara Fish Ponds in Badagry, Nigeria

   • S. A. Fashuyi

   OriginalPaper Pages: 171 - 174

6. Species richness in tropical fresh waters of Australia

   • R. J. Shiel
   • W. D. Williams

   OriginalPaper Pages: 175 - 183

7. Depth-time distributions of detritus depositions in Lake Nemi (volcanic lake of central Italy)

   • Loreto Rossi
   • Laura Picciafuoco
   • Alberto Basset

   OriginalPaper Pages: 185 - 195

8. Contents of volume 202, 1990

   Legacy Pages: i - i

9. Author index, vol. 202, 1990

   Legacy Pages: ii - ii