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The 65 pages that link to Nitrogen cycle, each with the reason it gives.

• EutrophicationRelated: Nitrogen transformations determine how much biologically available nutrient reaches water.

• FertilizerRelated: Soil microbes transform fertilizer nitrogen into forms plants can use or lose.

• Ocean deoxygenationRelated: Low-oxygen conditions alter microbial nitrogen transformations and can increase nitrogen loss from ecosystems.

• Anaerobic respirationRelated: Denitrifying respiration returns biologically available nitrogen to the atmosphere.

• Aquarium fishRelated: Beneficial microbes process toxic fish waste through this cycle.

• MicroorganismRelated: Microorganisms perform essential transformations such as nitrogen fixation and denitrification.

• Soil microbiomeRelated: Soil microorganisms mediate nitrogen fixation, nitrification, and denitrification.

• Carbon-14Related: Atmospheric nitrogen supplies the nuclei from which natural carbon-14 is produced.

• GuanoRelated: Guano concentrates biologically cycled nitrogen into material that can enrich farmland.

• Soil microbiologyRelated: Soil microbes mediate nitrogen fixation, mineralization, nitrification, and denitrification.

• AquariumRelated: In aquariums, microbes convert toxic ammonia into nitrite and then less harmful nitrate.

• DecomposerRelated: Decomposition releases nitrogen compounds that other organisms can use.

• Carl BoschRelated: Industrial fixation added large quantities of reactive nitrogen to natural cycles.

• Carnivorous plantRelated: Prey provides nitrogen that nutrient-poor habitats often fail to supply.

• ManureRelated: Manure returns biologically available nitrogen to soils, where it can change form or escape.

• EricaceaeRelated: Ericaceae depend on nitrogen acquisition strategies suited to soils where nitrogen is scarce.

• Ammonium sulfateRelated: Soil microbes transform ammonium from this fertilizer into other forms of nitrogen.

• AquaponicsRelated: Aquaponics relies on microbial steps in this cycle to move nitrogen from waste to plants.

• Ammonia synthesisRelated: Industrial fixation adds reactive nitrogen at a scale that alters the global cycle.

• Sodium nitrateRelated: Nitrate from this salt enters the biological nitrogen cycle after agricultural use.

• Great AccelerationRelated: Synthetic fertilizer and combustion sharply increased human alteration of nitrogen flows.

• Human impact on the environmentRelated: Fertilizer production and use add reactive nitrogen and alter this global cycle.

• Agricultural landRelated: Fertilizer use on farmland alters nitrogen flows and can pollute air and water.

• Carnivory in plantsRelated: Prey supplies nitrogen that can be scarce in carnivorous plants’ habitats.

• Microbial metabolismRelated: Microbial metabolism drives nitrogen fixation, nitrification, and denitrification.

• Agricultural scienceRelated: Agricultural nitrogen inputs can alter this cycle and cause environmental losses.

• Environmental impact of agricultureRelated: Fertilizer and manure add reactive nitrogen, disrupting natural cycling and creating pollution.

• AnabaenaRelated: Anabaena’s nitrogen fixation links atmospheric nitrogen to biological nutrient cycling.

• RhizobiaRelated: Rhizobia connect atmospheric nitrogen to plant and soil nitrogen pools.

• Alnus rubraRelated: Nitrogen fixed by red alder enters wider ecosystem nutrient flows as tissues decompose.

• History of fertilizerRelated: Synthetic fertilizer altered the scale and speed of nitrogen flows through ecosystems.

• Isotopes of nitrogenRelated: Its processes alter nitrogen isotope ratios in environmental reservoirs.