1. Simulated effects of precipitation and nitrogen on Serengeti grassland productivity

   • Steven W. Seagle
   • S. J. McNaughton

   OriginalPaper Pages: 157 - 178

2. Nitrate limitation of N₂O production and denitrification from tropical pasture and rain forest soils

   • William F. J. Parsons
   • Martin E. Mitre
   • William A. Reiners

   OriginalPaper Pages: 179 - 193

3. Biomarker compounds as source indicators for dissolved fulvic acids in a bog

   • John R. Ertel
   • Jennifer M. Caine
   • E. Michael Thurman

   OriginalPaper Pages: 195 - 212

4. Contents volume 22 1993

   Legacy Pages: 219 - 219

5. Author index volume 22 1993

   Legacy Pages: 220 - 220