1. Distribution and biogeochemical importance of bacterial populations in a thick clay-rich aquitard system

   • J. R. Lawrence
   • M. J. Hendry
   • C. W. Greer

   OriginalPaper Pages: 273 - 291

2. Isolation and characterization of acetate-utilizing anaerobes from a freshwater sediment

   • J. C. M. Scholten
   • A. J. M. Stams

   OriginalPaper Pages: 292 - 299

3. Structure and colonization dynamics of epiphytic bacterial communities and of selected component strains on tomato (Lycopersicon esculentum) leaves

   • Edouard J. Jurkevitch
   • G. Shapira

   OriginalPaper Pages: 300 - 308

4. Culture-independent detection of changes in root-associated bacterial populations of common bean (phaseolus vulgaris L.) following nitrogen depletion

   • E. Schallmach
   • D. Minz
   • E. Jurkevitch

   OriginalPaper Pages: 309 - 316

5. The microbial food web in the recently flooded sep reservoir: Diel fluctuations in bacterial biomass and metabolic activity in relation to phytoplankton and flagellate grazers

   • L. -B. Jugnia
   • R. D. Tadonléké
   • J. Devaux

   OriginalPaper Pages: 317 - 329

6. The toxic symbiontCaedibacter caryophila in the cytoplasm ofParamecium novaurelia

   • J. Kusch
   • M. Stremmel
   • H. J. Schmidt

   OriginalPaper Pages: 330 - 335

7. Humic materials offer photoprotective effect toEscherichia coli exposed to damaging luminous radiation

   • A. Muela
   • J. M. García-Bringas
   • I. Barcina

   OriginalPaper Pages: 336 - 344

8. Evolution of bacterial diversity during enrichment of PCP-degrading activated soils

   • M. Beaulieu
   • V. Bécaert
   • R. Villemur

   OriginalPaper Pages: 345 - 355

9. Errata

   • A. Iakovlev
   • J. Stenlid

   Erratum Pages: 362 - 362