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  • What is productivity in an ecosystem? Explain the relationship between gross primary productivity and net primary productivity in an ecosystem.        

What is productivity in an ecosystem? Explain the relationship between gross primary productivity and net primary productivity in an ecosystem.

 

 

 

 

 
 
 
 
 

Answers (1)

The productivity of an ecosystem is the rate of biomass production. It is expressed in terms of g^{2}y^{-1} or (kcalm^{-2})y^{1} to compare the productivity of different ecosystems.

Gross Primary Productivity (GPP) is an ecosystem is the rate of production of organic matter during photosynthesis. A considerable amount of GPP is utilized by plants in respiration.

Gross Primary Productivity minus respiration losses (R) is the Net Primary Productivity (NPP)

GPP-R=NPP

Net primary productivity is available biomass for the consumption of heterotrophs  (herbivores and decomposes)

Posted by

Priyanka Kumari

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