Nitrogen Cycle review.

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Presentation transcript:

Nitrogen Cycle review

Nitrogen Fixation Starts with: nitrogen gas Processes: Lightning Fixation with bacteria in nodules on roots of plants Organism(s): Nitrogen fixing bacteria Ends with: Nitrates (NO3)

Ammonification Starts with: Detritus Processes: Conversion of nitrogen in tissue by decomposition Organism(s): Bacteria and fungi Ends with: Ammonia (NH3) or ammonium (NH4)

Nitrification Starts with: Ammonia Processes: Converting ammonia into nitrates Organism(s): Nitrifying bacteria in the soil (aerobic) Ends with: Converts ammonia into nitrites (NO2) and then into nitrates (NO3)

Denitrification Starts with: Detritus Processes: Decomposition – Nitrates (NO3) into nitrogen gas(N2) Organism(s): Denitrifying bacteria in soil (anaerobic) Ends with: Nitrates (NO3) converted to nitrites (NO2) and finally into nitrogen gas (N2)