Distributions of organisms

• What factors can influence the distribution of organisms?

  Abiotic factors such as light, temperature, and pH.
• What is an example of an abiotic factor that affects biodiversity?

  Light intensity.
• How is light intensity measured in an ecosystem?

  Using a light sensor.
• What are some biotic factors that can affect the distribution of organisms?

  Competition for resources, predation, and disease.
• Describe a method used to measure an abiotic factor like pH.

  Using a pH probe.
• Why should pitfall traps not be left too long?

  To prevent the death of captured organisms and ensure accurate sampling.
• How does shadowing affect light readings in an ecosystem?

  It can lead to inaccurate measurements of light intensity.
• What is the significance of taking readings at different times of the day?

  To capture variations in light intensity throughout the day.
• What are the main abiotic factors that influence ecosystems?

  • Light intensity
  • Temperature
  • pH
  • Moisture levels
• What are the key biotic factors affecting biodiversity?

  • Competition for resources
  • Predation
  • Disease
• What is the method for measuring temperature in an ecosystem?

  • Use a thermometer or temperature probe.
• Whats an abiotic factor?

  Non-living factors
• What is a biotic factor

  Living factors