Outline the salient features of the ecosystem nitrogen cycling.
Salient features of the ecosystem nitrogen cycle are listed below. The ultimate source of nitrogen is an atmosphere that cannot be directly metabolized by living organisms. Nitrogen-fixing bacterial activities facilitate the entry of nitrogen into biological pathways. Azotobacter and Clostridium are the major free nitrogen-fixing bacteria in the soil. Ammonification is done by many bacteria. Ammonia is converted into nitrate by a group of chemoautotrophic bacteria through a two-step process called nitrification.
