1. An assessment of the global impact of anthropogenic vanadium

   • BRUCE K. HOPE

   OriginalPaper Pages: 1 - 13

2. Experimental investigation of drought induced acidification in a rich fen soil

   • VÉRONIQUE VAN HAESEBROECK
   • DIRK BOEYE
   • RUDOLF F. VERHEYEN

   OriginalPaper Pages: 15 - 32

3. Nitrogen fixation in a desert stream ecosystem

   • NANCY B. GRIMM
   • KEVIN C. PETRONE

   OriginalPaper Pages: 33 - 61

4. Nutrient limitation and soil development: Experimental test of a biogeochemical theory

   • PETER M. VITOUSEK
   • HERALDO FARRINGTON

   OriginalPaper Pages: 63 - 75

5. Enhanced CH₄ emission from a wetland soil exposed to Elevated CO₂

   • J. PATRICK MEGONIGAL
   • W.H. SCHLESINGER

   OriginalPaper Pages: 77 - 88