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8 Cards in this Set
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ecosystem
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A community of interacting organisms plus the physical environment in which they live.
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gross primary production (GPP)
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The amount of energy that autotrophs capture by photosynthesis and chemosynthesis.
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leaf area index
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The area of leaves per unit of ground area (a dimensionless number, since it is an area divided by an area).
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net ecosystem production
(net ecosystem exchange) |
The combined ecosystem fluxes of CO2, including net primary production and heterotrophic respiration.
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net primary production (NPP)
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The amount of energy (per unit time) that autotrophs capture by photosynthesis and chemosynthesis, minus the amount used in cellular respiration.
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net secondary production
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The balance between energy gain through ingestion, and energy losses by cellular respiration and egestion in heterotrophs.
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primary production
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The chemical energy in an ecosystem generated by autotrophs, derived from the fixation of carbon during photosynthesis and chemosynthesis.
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secondary production
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Energy in an ecosystem that is derived from the consumption of organic compounds produced by other organisms.
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