1. Variation in Streamwater Chemistry Throughout the Hubbard Brook Valley

   • Gene E. Likens
   • Donald C. Buso

   OriginalPaper Pages: 1 - 30

2. Estimating the Mean Residence Time of Lead in the Organic Horizon of Boreal Forest Soils using 210-lead, Stable Lead and a Soil Chronosequence

   • Jonatan Klaminder
   • Richard Bindler
   • Harald Grip

   OriginalPaper Pages: 31 - 49

3. Hydroxyl Radical Production from Irradiated Arctic Dissolved Organic Matter

   • Amanda M. Grannas
   • Christopher B. Martin
   • Matthew Platz

   OriginalPaper Pages: 51 - 66

4. Iron Reduction and Soil Phosphorus Solubilization in Humid Tropical Forests Soils: The Roles of Labile Carbon Pools and an Electron Shuttle Compound

   • Noemi Chacon
   • Whendee L. Silver
   • Daniela F. Cusack

   OriginalPaper Pages: 67 - 84

5. Biochemical Origin and Refractory Properties of Humic Acid Extracted from the Maize Plant

   • Fabrizio Adani
   • Manuela Spagnol
   • Pierluigi Genevini

   OriginalPaper Pages: 85 - 96

6. Nitrogen Cycling and Mass Balance for a Forested Catchment in the Italian Alps. Assessment of Nitrogen Status

   • Raffaella Balestrini
   • Norma Di Martino
   • Helga Van Miegroet

   OriginalPaper Pages: 97 - 123