Biogeochemical Cycling of Nitro­gen | Microbiology

The key processes of biogeochemical cycling of nitro­gen are: 1. Nitrogen Fixation 2. Ammonification 3. Nitrification 4. Denitrification. 1. Nitrogen Fixation: Nitro­gen fixation is a process of conver­sion of gaseous form of nitrogen (N2) into combined forms i.e. ammo­nia or organic nitrogen by some bacteria and cyanobacteria. There are free-living as well as symbiotic microorganisms which fix N2 into proteins. [...]