Definitions

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  • Created by: 990324
  • Created on: 17-02-17 15:59
Primary consumer
Animals that feed on producers (.e.g. plants). Primary consumers are typically herbivores
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Secondary consumer
Animals that feed on primary consumers. Secondary consumers are typically carnivores
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Producer
An organism capable of producing / synthesizing its own organic compunds by photosynthesis or chemosynthesis
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Food chain
A food chain shows how each living thing gets food, and how nutrients and energy are passed from creature to creature
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Food web
A number of interlinked food chains with a number of differnt organisms or populations at each trophic level
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Trophic level
The positiona organims or population occupies in a food chain or food web
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Biomass
The total quantity of matter in an organims, population or trophic level
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Productivity
The rate at which energy is incorporated into an organims, population or trophic level (units = kJm-2y-1)
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Primary productivity
The rate at which energy in incorporated by producers in the form of organic material that can be used as food material
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Secondary productivity
The rate at which energy in incorporated into consumers whatever their trophic level
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Gross primary productivity
Tthe amount of chemical energy as biomass that primary producers create (by photosynthesis) in a given length of time
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Net primary productivity
The rate at which all the plants in an ecosystem produce net useful chemical energy
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Other cards in this set

Card 2

Front

Animals that feed on primary consumers. Secondary consumers are typically carnivores

Back

Secondary consumer

Card 3

Front

An organism capable of producing / synthesizing its own organic compunds by photosynthesis or chemosynthesis

Back

Preview of the back of card 3

Card 4

Front

A food chain shows how each living thing gets food, and how nutrients and energy are passed from creature to creature

Back

Preview of the back of card 4

Card 5

Front

A number of interlinked food chains with a number of differnt organisms or populations at each trophic level

Back

Preview of the back of card 5
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