Primary and Secondary Production

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Last updated 8:52 AM on 3/4/26
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10 Terms

1
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What is production in ecosystems defined as?

The accumulation of carbon compounds in the form of biomass.

<p>The accumulation of carbon compounds in the form of biomass.</p>
2
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Who are considered primary producers in ecosystems?

Autotrophs as they synthesize carbon compounds from CO2 and inorganic substances.

3
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What is primary productivity?

The accumulation of carbon compounds in the biomass of autotrophs.

4
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What is required for primary productivity to occur?

Solar energy input is required.

5
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What is primary production?
Accumulation of carbon compounds in autotroph biomass.
6
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What is gross primary productivity (GPP)?
Total biomass made by photosynthesis.
7
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What is net primary productivity (NPP)?
GPP minus plant respiration
8
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What affects primary productivity?
Sunlight, temperature, and rainfall.
9
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What is secondary production?
Accumulation of biomass in heterotrophs from consuming organic matter.
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Why is secondary production always lower than primary?
Respiratory losses reduce energy available for heterotroph growth.