Why Is Net Primary Production (NPP)a More Useful Measurement to an Ecosystem

question 67

Multiple Choice

Why is net primary production (NPP) a more useful measurement to an ecosystem ecologist than gross primary production (GPP) ?

• A) NPP can be expressed in energy/unit of area/unit of time.
• B) NPP can be expressed in terms of carbon fixed by photosynthesis for an entire ecosystem.
• C) NPP represents the stored chemical energy that is available to consumers in the ecosystem.
• D) NPP is the same as the standing crop.
• E) NPP shows the rate at which the standing crop is utilized by consumers.

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