Abiotic and Biotic Factors

• Abiotic (non-living) factors which can affect a community are

  • Light intensity
  • Temperature
  • Moisture levels
  • Soil pH and mineral content
  • Wind intensity and direction
  • Carbon dioxide levels for plants
  • Oxygen levels for aquatic animals
• Biotic (living) factors which can affect a community are

  • Availability of food
  • New predators arriving
  • New pathogens
  • One species outcompeting another so the numbers are no longer sufficient to breed