Biology
Net Primary Productivity
Calculate net primary productivity.
NPP = GPP - R
Formula Explanation
Net primary productivity is gross primary productivity minus energy used in producer respiration, expressed on a consistent basis.
Variables Explained
NPP = Net primary productivity; GPP = Gross primary productivity; R = Producer respiration.
Solved Example
If GPP is 2,000 units and respiration is 700 units, calculate NPP.
NPP = 2000 - 700 = 1300 units.