Phosphorous Cycle Flashcards
1
Q
Why is phosphorous important?
A
Phosphorous is used in many biological processes such as ATP energy and membrane structure (phospholipids
2
Q
What is the function of the availability of phosphorous?
A
It is a function of geological constraints (weathering) and biotic and abiotic processes
3
Q
What form of phosphorous is environmentally active?
A
Orthophosphate
4
Q
What are the 3 factors that affect the mobility of phosphorous in soil and waterways?
A
- Adsorption / Desorption (Physical)
- Precipitation / Dissolution (Chemical/Physical)
- Mineralization / Immobilization (Biological)
5
Q
What is Adsorption?
A
The adhesion of atoms, ions or molecules from a gas, liquid or dissolved solid to a surface
6
Q
What is Desorption?
A
A process where a previously adsorbed substance is released from a surface.
