Population Ecology

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  • Population Ecology
    • sampling techniques are used to estimate population size
    • The exponantial growth pattern occurs in an ideal, unlimited environment
      • J shaped curve
    • the phases shown in the sigmoid curve can be explained by relative rates of natality, mortality, immigration and emigration
      • s - shaped curve
      • natality > mortality - exponential phase
      • Natality rate approaches mortality rate - transitional phase
      • carrying capacity - plateau phase
    • population growth slows as a population reaches the carrying capacity of the environment
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