1. Is KCl a reliable extractant of¹⁵NH ₄ ⁺ added to coastal marine sediments?

   • M. C. J. Laima

   OriginalPaper Pages: 83 - 95

2. Microbial oxidation of methane, ammonium and carbon monoxide, and turnover of nitrous oxide and nitric oxide in soils

   • Martin Bender
   • Ralf Conrad

   OriginalPaper Pages: 97 - 112

3. Groundwater nitrogen dynamics at the terrestrial-lotic interface of a small catchment in the Central Amazon basin

   • Michael E. McClain
   • Jeffrey E. Richey
   • Tania Pen Pimentel

   OriginalPaper Pages: 113 - 127

4. Sulfur and iron cycling in a coastal sediment: Radiotracer studies and seasonal dynamics

   • Lars Moeslundi
   • Bo Thamdrup
   • Bo Barker Jørgensen

   OriginalPaper Pages: 129 - 152