Biotics and abiotics

• Abiotic factor


  A non-living part of an ecosystem that shapes its environment
• Shapes


  Refer to the form or appearance of an object characterized by its outline or axemal surface, including squares, circles, triangles, rectangles, and more complex forms
• Biotic


  • Organic matter
  • Living things
  • Oysters
  • Blue Crabs
  • Zooplankton
  • Jellyfish
  • Phytoplankton
• Abiotic


  • Climate
  • Non-living things
  • Sunlight
  • Temperature
  • Nutrient enrichment
  • Humidity
• Biotic factors


  Living things within an ecosystem such as plants, animals, and bacteria
• Pyramid of numbers


  • Does not always have a regular pyramid shape because it does not take into account the biomass of the organisms
• Pyramid of biomass


  • Represents the mass of organisms at each trophic level
  • Trophic level position of an organism in a food chain, food web or pyramid
  • Biomass of the organisms in each level is decreasing by 10% per trophic level