1. Physiological effects of hydrocarbons on the marine diatomCyclotella cryptica

   • M. Karydis
   • G. E. Fogg

   OriginalPaper Pages: 281 - 290

2. Effect of light intensity on macromolecular synthesis in cyanobacteria

   • Allan Konopka
   • Marilyn Schnur

   OriginalPaper Pages: 291 - 301

3. Response of thermal algal-bacterial mat to grazing by brine flies

   • Conrad E. Wickstrom
   • Richard G. Wiegert

   OriginalPaper Pages: 303 - 315

4. Microbial succession on a chitinous substrate in a woodland stream

   • Nicholas G. Aumen

   OriginalPaper Pages: 317 - 327

5. Measurement of in situ rates of nitrification in sediment

   • Kaj Henriksen

   OriginalPaper Pages: 329 - 337

6. Effects of temperature, ph, salinity, and inorganic nitrogen on the rate of ammonium oxidation by nitrifiers isolated from wetland environments

   • R. D. Jones
   • Mary A. Hood

   OriginalPaper Pages: 339 - 347

7. N₂ Fixation (C₂H₂ reduction) by epiphylls on coffee,Coffea arabica

   • Joann P. Roskoski

   OriginalPaper Pages: 349 - 355

8. Effect of Kepone on estuarine microbial activity

   • Steve A. Orndorff
   • R. R. Colwell

   OriginalPaper Pages: 357 - 368