Abiotic and Biotic Factors

• Abiotic factors affecting communities:

  • Light intensity, temperature, moisture levels, soil pH and mineral content, wind intensity and direction, carbon dioxide levels, and oxygen levels for aquatic animals
  • Abiotic factors can affect the rate of photosynthesis, plant growth, transpiration, and distribution of organisms
• Biotic factors affecting communities:

  • Food availability, new predators, new pathogens, and competition
  • Changes in biotic factors can impact population numbers and species interactions within a community
• Abiotic is a non-living factor that affects the environment.
• Biotic is a living factor that affects the population of an organism.