1. Evolution of temperature and salt structure of Lake Bonney, a chemically stratified Antarctic lake

   • Robert H. Spigel
   • John C. Priscu

   OriginalPaper Pages: 177 - 190

2. How many species of Cladocera are there?

   • N. M. Korovchinsky

   OriginalPaper Pages: 191 - 204

3. Influence of wastewater treatment on the microbial ecology of a large, temperate river system — the Danube River

   • Birgit Hoch
   • Barbara Berger
   • Gerhard J. Herndl

   OriginalPaper Pages: 205 - 218

4. Aquatic macrophytes, macroinvertebrate associations and water levels in a lowland Tasmanian river

   • Paul Humphries

   OriginalPaper Pages: 219 - 233

5. The gastric mill of euphausiid crustaceans: a comparison of eleven species

   • Hae-Lip Suh

   OriginalPaper Pages: 235 - 244

6. Evolution in ancient lakes

   • Geoffrey Fryer

   Opinion Pages: 245 - 254

7. Book reviews

   • T. J. Pandian
   • B. A. Whitton
   • H. Löffler

   BookReview Pages: 255 - 259