Reasons for Conservation (Cambridge O Level Biology)

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Reasons for Conservation

  • There are numerous reasons why conservation programmes are important
    • Maintaining or increasing biodiversity
      • Which allows ecosystems to remain stable
    • Reducing extinction
      • Helps to retain iconic species and maintain biodiversity
    • Protecting vulnerable ecosystems which would have been quickly lost to human activity
    • Maintaining ecosystem functions
      • Nutrient cycling eg. carbon cycling to hold back climate change
      • Resource provision, such as
        • Food - making sure we have enough for the population
        • Drugs - having access to plants for plant-based remedies
        • Fuel - for important activities such as cooking
        • Genes - so the gene pool remains wide and variety exists in all species
  • Certain conservation techniques can be used to maintain biodiversity
  • Examples include
    • Artificial insemination (AI) in captive breeding programmes
      • This allows large numbers of offspring to be produced without the need for conventional sexual intercourse between males and femalesĀ 
    • In vitro fertilisation (IVF) in captive breeding programmes
      • This allows gametes with known alleles to be used in ensuring the next generation remains biodiverse

Risks to a species

  • If its population size decreases, a species will experience reduced genetic variation
  • This renders the species more susceptible to environmental change
  • The species is less resilient and has a greater risk of extinction

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Phil

Author: Phil

Expertise: Biology

Phil has a BSc in Biochemistry from the University of Birmingham, followed by an MBA from Manchester Business School. He has 15 years of teaching and tutoring experience, teaching Biology in schools before becoming director of a growing tuition agency. He has also examined Biology for one of the leading UK exam boards. Phil has a particular passion for empowering students to overcome their fear of numbers in a scientific context.