The organism in the environment

• Population: All members of single species living in the same area at the same time
• Community: Groups of populations living and interacting with each other in an area
• Habitat: Environment in which species normally live in
• Ecosystem: Community and physical environment
• • Place quadrat randomly within sampling area
  • Count the number of members of the same specieswithin the quadrat
  • Repeat this numerous times within sampling area using the same size quadrat
  • Repeat the process in another area to compare results

  Population size = Total size/Sample size x number of organisms
• • Abiotic Factors can affect a range of Species as each organism is adapted to certain environments
  • Light Intensity
  • Soil pH
  • Carbon Dioxide Levels
  • Soil Moisture Level
  • Availability of Minerals and Nutrients
  • Availability of Water
  • Temperature
  • Oxygen Levels
• • Biotic Factors will affect all Species as they have the vulnerability of being food to Predators or being a host to diseases that can affect Population of Species
  • Grazing
  • Competition for Food
  • Fungi
  • Diseases
  • Competition for Shelter
  • Predators
  • Bacteria