Classification and Biodiversity

• Scientific names


  Used as they are universal, avoiding confusion from language barriers or common names
• Adaptations


  • Living things become adapted to their habitat
  • Adaptations can be morphological (e.g. large ears to reduce heat loss)
  • Adaptations can be behavioural (e.g. nocturnal activity to avoid heat)
• Types of competition


  • Interspecific (between different species)
  • Intraspecific (between members of the same species)
• Measuring biodiversity using quadrats

  1. Take a random sample

  2. Use a larger sample for a more accurate estimate

  3. Count the different species and number of each in each quadrat

  4. Take the mean and multiply up to estimate the whole area
• Measuring biodiversity using capture-recapture

  1. Carefully collect organisms from an area

  2. Mark and return them

  3. Recollect after time for reintegration

  4. Use an equation to calculate estimated population size
• Biological control


  The use of one organism to control the population size of another species by eating it
• Types of species


  • Predator
  • Prey
  • Pest
  • Native species
  • Alien species
  • Invasive species
• Assumptions when using capture-recapture data include no death, immigration or emigration, and marking technique does not affect survival
• 5 vertebrates


  Mammals

  Fish

  Birds

  Reptiles

  Amphibians