The equation that best represents NPP is NPP = P - R, where NPP is the net primary productivity, P is the rate of carbon fixation by photosynthesis, and R is the respiration rate.
The equation that best represents Net Primary Productivity (NPP) is:
NPP = P - R
Where:
- NPP is the net primary productivity
- P is the rate of carbon fixation by photosynthesis
- R is the respiration rate
NPP quantifies the amount of energy that remains in the primary producers after accounting for respiration and heat loss. It represents the energy available to the organisms at the next trophic level.