gaseous cycle

A gaseous cycle is a biogeochemical cycle where the reservoir is the air or oceans. These cycles involve the continuous circulation of essential elements within an ecosystem, moving between living organisms and their physical environment. Key elements in gaseous cycles include nitrogen, oxygen, carbon, and water.12

For example, the nitrogen cycle involves nitrogen moving through the atmosphere, soil, and water. Plants need nitrogen in forms like ammonia and nitrates, which are produced by nitrogen-fixing bacteria. Similarly, the carbon cycle involves the exchange of carbon dioxide between the atmosphere and oceans, and its assimilation by plants through photosynthesis. These cycles are crucial for sustaining life within ecosystems, as elements are recycled rather than lost.3412