1. Editorial

   • Gerard Muyzer
   • Lesley A. Robertson
   • Piet Bos

   Editorial Notes 14 July 2006 Pages: 305 - 305

2. “Microbiology is my hobby”—a short biography of Prof. J. Gijs Kuenen, Professor of Microbiology in Delft

   • Lesley A. Robertson

   Original Paper 05 October 2006 Pages: 307 - 308

3. Microbial diversity in natural environments: focusing on fundamental questions

   • David M. Ward

   Original Paper 25 October 2006 Pages: 309 - 324

4. Microbial transport: Adaptations to natural environments

   • Wil N. Konings

   Original Paper 17 October 2006 Pages: 325 - 342

5. Bacterial endosymbioses in Solemya (Mollusca: Bivalvia)—Model systems for studies of symbiont–host adaptation

   • Frank J. Stewart
   • Colleen M. Cavanaugh

   Original Paper 07 October 2006 Pages: 343 - 360

6. Nitrogen transformations in stratified aquatic microbial ecosystems

   • Niels Peter Revsbech
   • Nils Risgaard-Petersen
   • Lars Peter Nielsen

   Original paper 11 October 2006 Pages: 361 - 375

7. Biological control of the size and reactivity of catalytic Pd(0) produced by Shewanella oneidensis

   • Wim De Windt
   • Nico Boon
   • Willy Verstraete

   Original paper 11 October 2006 Pages: 377 - 389

8. Alcoholic fermentation of carbon sources in biomass hydrolysates by Saccharomyces cerevisiae: current status

   • Antonius J. A. van Maris
   • Derek A. Abbott
   • Jack T. Pronk

   Original Paper 11 October 2006 Pages: 391 - 418