The major transformations of nitrogen are nitrogen fixation, nitrification, denitrification, anammox, and ammonification (Figure 1). The transformation of nitrogen into its many oxidation states ...

This process is called ammonification. Additional species of bacteria use ammonia and ammonium to generate nitrates that plants need. This process is called nitrification. In addition to nitrogen ...

which returns it to biologically inert nitrogen gas (N2,), or ammonification, which turns nitrate into ammonium (NH4+) and keeps the nitrogen biologically useable. Because microbial ecosystems are ...

One of the most interesting new processes is when nitrogen reduction takes place under aerobic conditions and without any need of carbon with the total reaction called aerobic de-ammonification ...

Bacteria and archaea help convert atmospheric nitrogen gas to ammonia by nitrogen fixation (or ammonification) to make nitrogen usable for plants. Unlike many free-living nitrogen-fixing bacteria ...

The major transformations of nitrogen are nitrogen fixation, nitrification, denitrification, anammox, and ammonification (Figure 1). The transformation of nitrogen into its many oxidation states ...