Biology 108

• Biodiversity


  The variety of plant and animal life (and microbes)
• Not all introduced species will be invasive, some will persist
• Invasive species


  Species that migrate into an ecosystem and completely take over, leading to change in the biodiversity of that ecosystem
• Types of diversity


  • Genetic diversity
  • Species diversity
  • Ecosystem diversity
• Genetic diversity


  Diversity within a population
• Species diversity


  Number of different species in an area and the relative abundance of each
• Ecosystem diversity


  Diversity of different ecosystems in a landscape
• Diversity is a term that represents the richness and evenness of species
• Alpha diversity


  Species diversity within a habitat
• Beta diversity


  Diversity between habitats in a landscape
• Gamma diversity


  Total species diversity across a landscape
• One must be careful with how the term diversity is used