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A-Level Biology OCR A

Organisms Population Survive Intraspecific Reproduce Increase Size Explain

Intraspecific competition causes population fluctuations: plentiful resources lead to population increase, but then limited resources cause a decrease, followed by an increase as resources become less contended.

La competizione intraspecifica causa fluttuazioni della popolazione: le risorse abbondanti portano a un aumento della popolazione, ma portano anche a risorse limitate e a un calo della popolazione, seguito da un aumento man mano che le risorse diventano meno contese.

Front Explain the fluctuations caused by intraspecific competition.
Back Intraspecific competition:
  • Resource is plentiful - all organisms have enough to survive and reproduce - increase in population size
  • As a result, there are many more individuals that share the resources available - they become limited and not enough for all organisms to survive - decrease in population size
  • Smaller population means less organisms competing for same resources, more organisms survive and reproduce - population increase

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