Show:
Processes/Reactions
Reservoirs
Humans
The Twos'
Movement
100
Lots of specialized decomposer bacteria change this detritus into simpler nitrogen-containing inorganic compounds such as ammonia (NH3) and water-soluble salts containing ammonium ions (NH4)
What is Ammonification
100
Nitrogen in the atmosphere
What is a major organic reservoir
100
We add large amounts of nitric oxide into the atmosphere
What is N2 and O2 combining as we burn any fuel at high temperatures.
100
Leaves and skin
What is 2 organic compounds is nitrogen found in
100
Nitrogen oxides→ nitrogen in atmo→ ammonia in soil→ nitrate in soil→ either taken up by plants or run off into the ocean
What is the movement of nitrogen in the atmosphere
200
Specialized bacteria (in waterlogged soil and in the bottom of sediments of lakes, oceans, swamps, and bogs) convert NH3 and NH4 back into nitrate ions….then into nitrate gases…...these gases are released to the atmosphere to begin nitrogen cycle again.
What is Denitrification
200
animals (consumers), plants (producers)
What are other organic reservoirs
200
We add nitrous oxide (N2O) to the atmosphere through the action of anaerobic bacteria
What is commercial inorganic fertilizer or organic animal manure applied to the soil.
200
Electrical charges- i.e. lightening and in aquatic systems, soil, and the roots of some plants
What are two major ways that nitrogen is “fixed”
200
Nitrogen in the atmospheres-makes up 78% of the atmosphere, Humans
What is the input
300
(ammonia not taken up by plants) specialized soil bacteria convert most of the NH3 and NH4 in the soil to nitrate ions (NO3) which are easily taken up by the roots of plants…..the plants then use these forms to produce various amino acids, proteins, nucleic acids, and vitamins…..animals that eat these plants consume these nitrogen-containing compounds (as do decomposers)
What is Nitrification
300
nitrate in soil, ammonia in soil
What are organic reservoirs
300
release large quantities of nitrogen stored in soils and plants as gaseous compounds into the atmosphere
What is destruction of forests, grasslands, and wetlands.
300
Denitrification by bacteria, electrical storms, volcanic activity, decomposition,
What is the output
400
Specialized bacteria in soils as well as blue-green algae in aquatic environments combine gas N2 with hydrogen to make ammonia (NH3)....then, the bacteria use some of the ammonia they produce as a nutrient and excrete the rest into the soil or water….some of the ammonia is converted to ammonium ions (NH4) that plants can use as a nutrient.
What is Nitrogen Fixation
400
ocean sediments, loss to deep ocean sediment
What are other inorganic reservoirs
400
upseting the nitrogen cycle in aquatic ecosystems
What is adding excess nitrates to bodies of water through agricultural runoff of fertilizers and animal manure and through discharges from municipal sewage systems. (can cause excess growth of algae.
500
remove nitrogen from topsoil
What is harvest nitrogen-rich crops, irrigate crops (washing nitrates out of soils) and burn or clear grasslands and forests before planting crops.