ECOLOGY
ENERGY FLOW AND PRIMARY PRODUCTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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R=NPP + GPP
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R=NPP-GPP
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R=GPP-NPP
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R=GPP/NPP
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Detailed explanation-1: -The formula is that the NPP = GPP-R. The NPP is the overall potency of the plants within the scheme. Hence option ‘c’ NPP=GPP-Plant respiration is the correct answer.
Detailed explanation-2: -Here, GPP stands for Gross Primary Productivity, NPP for Net Primary Productivity and R for Respiration loss. Net primary productivity is defined as the energy fixed by autotrophs (in the form of carbon) after subtracting the carbon lost in respiration. NPP = GPP – Aerobic Respiration.
Detailed explanation-3: -GPP can be calculated by measuring the decrease in DO when put in the dark (only respiration (R) will occur) • NPP = GPP – R so GPP = NPP + R Page 32 Experiments to Calculate Productivity (Light/Dark Rxns) • You start a light bottle/dark bottle measurement on algae Species X with 10 mg/L of oxygen in both bottles.
Detailed explanation-4: -Net Primary Production (NPP) = GPP – RA The amount of organic carbon produced by plants that is not consumed by their own respiration.