Nitrogen Cycle Flashcards
1
Q
What is Ammonification?
A
Nitrogen present in the soil is decomposed by fungi and bacteria and released as ammonium NH4+.
2
Q
What bacteria is responsible for nitrification? (Monster trucks)
A
Nitrosomonas.
Nitrobacter
3
Q
Explain Denitrification.
A
Waterlogged soil, N2 gas is used up by bacteria in water - uses up oxygen to do this.
4
Q
4 different types of Nitrogen from least usable to most usable.
A
N.
NO2.
NH4+.
NO3-.
5
Q
Precipitation.
A
Air 78% N, rain contains N.
6
Q
Explain Leaching.
A
Loss of nutrients from the soil. Occurs more likely in higher rainfall areas.
7
Q
Nitrogen fixation.
A
Nitrogen gas made available to living organisms by being converted to ammonia by blue green algae/bacteria. Clostridium (free), or rhizobium (symbiotic).
