Ecosystems and Distribution of Organisms B4

HideShow resource information
View mindmap
  • Ecosystems and Distribution of Organisms
    • ecosystems are self supporting
      • an ecosystem is all the organisms living in a particular area, as well as non-living conditions (temp and soil qualities)
      • an ecosystem isn't the same as a habitat (a habitat is the place where an organism lives)
      • Ecosystems are self supporting- they contain everything they need to maintain themselfs
        • the only thing they need from outside the ecosystem is an energy source (the sun)
    • Transects are used to investigate the distribution of organisms
      • Distribution= where organism are found in a particular area
      • to do a transect, you mark out a line using tape measure and place quadrats next to eachother along the line. count and record organisms you find
      • can do a percentage cover if it is too difficult to count the organisms
        • estimate the  area of the transect covered by the organism
      • Plot results in  a kite diagram- allows to map distribution
    • Kite diagrams
      • Show the abundance +  distribution of organisms
      • The  abundance of each organism is shown by the thickness of the kite shape
      • The x-axis shows the distance along the transect line
  • Show the abundance +  distribution of organisms



Information is accurate but it's exactly the same wording as in the CGP GCSE OCR Biology Higher Level book, and so it's kind of just copying...

Similar Biology resources:

See all Biology resources »See all resources »