1. Denitrification measured by a direct N₂ flux method in sediments of Waquoit Bay, MA

   • Michael G. Lamontagne
   • Ivan Valiela

   OriginalPaper Pages: 63 - 83

2. Landscape patterns of free amino acids in arctic tundra soils

   • Knut Kielland

   OriginalPaper Pages: 85 - 98

3. Dissolved organic carbon and its utilization in a riverine wetland ecosystem

   • Carroll J. Mann
   • Robert G. Wetzel

   OriginalPaper Pages: 99 - 120