Biodiversity – species diversity index

  • define the terms species, ecosystem and niche
  • explain that biodiversity is considered at three different levels:
    • variation in ecosystems or habitats
    • the number of species and their relative abundance
    • genetic variation within each species
  • explain the importance of random sampling in determining the biodiversity of an area
  • describe suitable methods, such as frame quadrats, line transects, belt transects and mark-release-recapture, to assess the distribution and abundance of organisms in a local area
  • use Spearman’s rank correlation and Pearson’s linear correlation to analyse the relationships between the distribution and abundance of species and abiotic or biotic factors
  • use Simpson’s Index of Diversity (D) to calculate the biodiversity of a habitat and
  • state the significance of different values of Simpson’s Index of Diversity (D)