Biodiversity

• Define species richness


  The richness of different species in a particular area in a given time.
• What is genetic diversity?


  The variety of genes possessed by individuals that make up any one species
• Define ecosystem diversity 


  The range of different habitats within a particular area
• Define species diversity


  the number of different species and the number of individuals of each species within any one community
• What 2 components is the Species diversity index made up of?

  Number of different species in an given area and The proportion of the community that is made up of individual species
• What is used to measure biodiversity

  Species diversity index
• Name practices with indirect effects on biodiversity

  Use of pesticides and inorganic fertilisers, Escape of effluent from silage stores and slurry tanks into water courses and Absence of crop rotation which would have enriched the soil.
• Balance between conservation and farming 


  Removal of hedgergrows and grubbing out woodland, creating monocultures (growing cereals in meadows) , etc