In the equation GPP - R = NPP, where GPP is Gross Primary Productivity and NPP is Net Primary Productivity, R here is ___________
Reproductive allocation
Photosynthetically active radiation
Respiratory quotient
Respiratory loss
Gross primary productivity (GPP) refers to the rate of production of organic matter during photosynthesis. A considerable amount of this GPP is utilised by plants in respiration. The Gross Primary Productivity minus respiration losses (R) is defined as the Net Primary Productivity (NPP), expressed by the equation GPP – R = NPP .
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