1. Genetic nature, stability, and improved virulence of hybrids from protoplast fusion in Beauveria

   • Y. Couteaudier
   • M. Viaud
   • G. Riba

   OriginalPaper Pages: 1 - 10

2. The effect of temperature on viability of carbon- and nitrogen-starved Escherichia coli

   • S. M. Nelson
   • R. W. Attwell
   • C. A. Smith

   OriginalPaper Pages: 11 - 21

3. Exopolysaccharide production and attachment strength of bacteria and diatoms on substrates with different surface tensions

   • K. Becker

   OriginalPaper Pages: 23 - 33

4. A comparison of the survival of intraperiplasmic and attack phase bdellovibrios with reduced oxygen

   • A. J. Schoeffield
   • H. N. Williams
   • W. A. Falkler Jr.

   OriginalPaper Pages: 35 - 46

5. Seasonal denitrification in flooded and exposed sediments from the Amazon floodplain at Lago Camaleão

   • J. Kern
   • A. Darwich
   • W. J. Junk

   OriginalPaper Pages: 47 - 57

6. Relationship between abundance of N₂-fixing cyanobacteria and environmental features of Spanish rice fields

   • A. Quesada
   • E. Fernández-Valiente

   OriginalPaper Pages: 59 - 71

7. Studies on the aquatic hyphomycetes of a sulfur spring in the Western Ghats, India

   • M. Rajashekhar
   • K. M. Kaveriappa

   OriginalPaper Pages: 73 - 80

8. Evaluation of extracellular, high-affinity β-N-acetylglucosaminidase measurements from freshwater lakes: An enzyme assay to estimate protistan grazing on bacteria and picocyanobacteria

   • J. Vrba
   • K. Šimek
   • R. Psenner

   OriginalPaper Pages: 81 - 97

9. Evaluation of Extracellular, High-affinity β-N-acetylglucosaminidase Measurements from Freshwater Lakes: An Enzyme Assay to Estimate Protistan Grazing on Bacteria and Picocyanobacteria

   • J. Vrba
   • K. S˘imek
   • R. Psenner

   Pages: 81 - 99