BRAINCAKENet Primary Productivity
Plants use some of the energy they fix in photosynthesis for their own respiration, to power processes such as active transport and protein synthesis. This energy is eventually lost as heat. What remains is stored in new plant biomass.
Net primary productivity (NPP) is the rate at which energy is stored in plant biomass, per unit area per unit time. It is the energy available to primary consumers and decomposers.
NPP = GPP − R
Sign in free to see the rest of this lesson, the R.E.C.I.P.E. recall steps and the quiz
BrainCake is free. Make an account in seconds and pick up where this page stops.
More in The Efficiency of Ecosystems
- Energy Losses in Producers
- Energy Losses between Consumers
- Efficiency of Energy Transfer
- Gross Primary Productivity
- The Limitations of Efficiency Calculations
- Energy Transfer and Food Chain Length
- Nutrient Recycling
- Conditions for Recycling Nutrients
All 20 lessons in The Efficiency of Ecosystems · All Edexcel A-level Biology topics