Biogeochemical Cycles: the Nitrogen Cycle

Biogeochemical Cycles: the Nitrogen Cycle nitrogen cycle Nitrogen exists in the atmosphere as N 2 ‍ gas In nitrogen fixation, bacteria convert N 2 ‍ into ammonia, a form of nitrogen usable by plants nitrogen cycle Both the global and internal nitrogen cycles are biologically regulated, but the transformations are the result of biotic and abiotic interactions Electron

nitrogen cycle All of the nitrogen that is fixed out of the atmosphere goes into plants and then possibly into animals and then as those animals and plants die

cell cycle Abstract Global nitrogen fixation contributes 413 Tg of reactive nitrogen to terrestrial and marine ecosystems annually of which anthropogenic activities The nitrogen cycle Nitrogen is cycled through air, water and soil, undergoing many transformations made possible by the actions of specialized bacteria The