in ecosystem grass primary productivity 300 k cal what is net primary productivity of secondary cornivore where respiratory loss is 20 percent
Answer (1)
26th Dec, 2019
The rate of production of organic matter during photosynthesis is called Gross Primary Productivity (GPP) of the ecosystem.
When respiratory losses (R) is subtracted from GPP, we get Net Primary Productivity (NPP). Net primary productivity is the available biomass for the consumption of heterotrophs.
GPP = 300 kcal
R = 20% of GPP = 20/100x300 = 60 kcal
NPP = GPP - R
= 300-60
= 240 kcal
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