Biodiversity

• Biodiversity can be considered in 3 ways

  • Species diversity
  • Genetic diversity
  • Ecosystem diversity
• Species diversity- number of species and individuals of each species in a community
• Genetic diversity- variety of genes (alleles) possessed by individuals in a population
• Ecosystem diversity- Range of habitats (local habitat or the whole earth)
• Species diversity

  • Species richness
  • Species evenness
• Species richness- How many different species there are
• Species evenness- how evenly spread the number of individuals of each species is
• Diversity index:

  $d=$$\frac{\text{N(N-1)}}{\text{Σn(n-1)}}$