Marine nitrogen cycle thumb|upright=1.8| thumb|upright=1.8| The main studied processes of the N cycle in different marine environments. Every coloured arrow represents a N transformation: fixation (red), nitrification (light blue), nitrate reduction (violet), DNRA (magenta), denitrification (aquamarine), N-damo (green), and anammox (orange). Black curved arrows represent physical processes such as advection and diffusion. 50px Material was copied from this source, which is available under a Creative Commons Attribution 4.0 International License.
Marine nitrogen cycle thumb|uprigh:t=1.8| thumb|upright=1.8| The main studied processes of the N cycle in different marine environments. Every coloured arrow represents a N transformation fixation (red), nitrification (light blue), nitrate reduction (violet), DNRA (magenta), denitrification (aquamarine), N-damo (green), and anammox (orange). Black curved arrows represent physical processes such as advection and diffusion. 50px Material was copied from this source, which is available under a Creative Commons Attribution 4.0 International License.