B2.3 Organisms and their environments

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  • Created by: lridgeway
  • Created on: 05-06-17 10:16

Factors affecting distribution

  • Temperature
  • Availability of nutrients
  • Amount of light
  • Availability of water
  • Availability of oxygen and carbon dioxide
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Quadrats

  • Not very accurate
  • May be more of an organism in one area than another
  • Quite easy to get a rough estimate
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Transects

  • Used in steadily changing habitats to determine chnage in species
  • Place a tape and place quadrats at regular intervals
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