Energy and Ecosystems

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  • Energy & Ecosystems
    • Energy transfer = (energy available after / before) x100
    • Net productivity = gross productivity - respiratory losses
    • Biological control
      • Specific
      • Self reproducing
      • Always effective
      • Takes time
      • Never rid of pests completely
    • Chemical control
      • Needs to be reapplied
      • Resistence
      • effects non-target species
    • Intensive rearing
      • restricted movement
      • warm environment reduces heat loss
      • high protein food
      • predators are excluded
      • hormones increase growth
      • cheap production

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