Ecosystems III
Biogeochemical Cycles
I Global Cycles
A. Atmospheric cycles
1.Water Cycle
a. Major pools
b. Movements
2.Oxygen/Carbon
a. Photosynthesis
b. Respiration
c. Biogeochemistry of carbon
3. Nitrogen
a. Forms of Nitrogen
b. Major pools
c. Dynamics
i. fixation N2 => NH3
ii. denitrification N03- => N20 => N2
iii. nitrification NH3 + NO2- => NO3iv. ammonification organic matter => NH3
4. Sulfur
B. Sedimentary Cycles
1. Phosphorus.
2. Others "trace" minerals
3.) Ecosystem cycles
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