A nitrogen compound metabolic process that contributes to the nitrogen cycle. The nitrogen cycle is a series of metabolic pathways by which nitrogen is converted between various forms and redox states; it encompasses pathways in which nitrogen is acted upon directly, such as nitrification, denitrification, nitrogen fixation, and mineralization. [ GOC:mah http://www.ncbi.nlm.nih.gov/pubmed/16675690 http://en.wikipedia.org/wiki/Nitrogen_cycle ]

This is just here as a test because I lose it