1. Obituary Professor Dr Karl Wuhrmann Editorial Board 1974–1985

   • Peter Perret

   Announcement Pages: 245 - 245

2. Zooplankton induced changes in dissolved free amino acids and in production rates of freshwater bacteria

   • Bo Riemann
   • Niels O. G. Jørgensen
   • Jed A. Fuhrman

   OriginalPaper Pages: 247 - 258

3. Bacterial productivity in ponds used for culture of penaeid prawns

   • D. J. W. Moriarty

   OriginalPaper Pages: 259 - 269

4. Diel changes in the specific growth rate and mean cell volume of natural bacterial communities in two different water masses in the Irish sea

   • C. Turley
   • K. Lochte

   OriginalPaper Pages: 271 - 282

5. Nitrate reduction activity in a continuous flow-through system in marine sediments

   • Jose Luis Esteves
   • Gilbert Mille
   • Jean Claude Bertrand

   OriginalPaper Pages: 283 - 290

6. Temporal relationship between the deposition and microbial degradation of lignocellulosic detritus in a Georgia salt marsh and the Okefenokee Swamp

   • Ronald Benner
   • A. E. Maccubbin
   • Robert E. Hodson

   OriginalPaper Pages: 291 - 298

7. Growth kinetics ofPseudomonas fluorescens microcolonies within the hydrodynamic boundary layers of surface microenvironments

   • Douglas E. Caldwell
   • John R. Lawrence

   OriginalPaper Pages: 299 - 312

8. Book review

   • J. M. Lynch

   BookReview Pages: 313 - 313