BIOL&213 Chapter 55: Ecosystem Dynamics

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6 Terms

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Primary Production

The amount of light energy converted to chemical energy by autotrophs during a given time period

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What are the two measures of primary productivity?

Gross primary productivity (GPP) and net primary productivity (NPP)

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Gross Primary Productivity (GPP)

The energy assimilated by autotrophs by photosynthesis

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Net Primary Productivity (NPP)

The remaining organic matter after respiration by autotrophs

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Standing crop

the total biomass of photosynthetic autotrophs at a given time

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