1. Environmental impact of former gold mining on the Orangi river, Serengeti N.P., Tanzania

   • R. J. Bowell
   • A. Warren
   • N. Kimaro

   OriginalPaper Pages: 131 - 160

2. Role of SO₄ adsorption and desorption in the long-term S budget of a coniferous catchment on the Canadian Shield

   • Daniel Houle
   • Richard Carignan

   OriginalPaper Pages: 161 - 182

3. Plant transport and methane production as controls on methane flux from arctic wet meadow tundra

   • Joshua P. Schimel

   OriginalPaper Pages: 183 - 200