ECOLOGY
ENERGY FLOW AND PRIMARY PRODUCTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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cannot be determined from the information given
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1, 000 gC/m2yr
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9, 000 gC/m2yr
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-1, 000 gC/m2yr
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Detailed explanation-1: -You can see that your bank account balance is determined as follows: Your Net production is equal to your Gross Production minus Respiration, which is the same as the equation above that states the Net Primary Production (NPP) = the Gross Primary Production (GPP) minus Respiration (R).
Detailed explanation-2: -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-3: -NPP = GPP + Animal respiration. Hint: Gross primary Production (GPP) is the total rate at which material is produced and net primary production (NPP) is the rate at which material is accumulated in excess of respiration.
Detailed explanation-4: -Gross primary productivity, or GPP, is the rate at which solar energy is captured in sugar molecules during photosynthesis (energy captured per unit area per unit time). Producers such as plants use some of this energy for metabolism/cellular respiration and some for growth (building tissues).