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Population Ecology

Population Ecology. Population. A group of individuals of a single species in a given area Density Dispersion. Demography. The study of statistics that affect population size. Life Table. Reproductive Table. Population Growth. Exponential Growth dN/dt = r max N dN = change in number

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Population Ecology

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  1. Population Ecology

  2. Population • A group of individuals of a single species in a given area • Density • Dispersion

  3. Demography • The study of statistics that affect population size

  4. Life Table

  5. Reproductive Table

  6. Population Growth • Exponential Growth • dN/dt = rmaxN • dN = change in number • dt = change in time • rmax = intrinsic growth rate • N = number of ind.

  7. Population Growth • Logistic Growth • dN/dt = rmaxN (K-N) K • dN = change in number • dt = change in time • rmax = intrinsic growth rate • N = number of ind. • K = Carrying Capacity

  8. Logistic Growth

  9. r selected Large number of offspring No parental care Small in size Short lifespan K selected Small number of offspring Large amounts of parental care Large in size Longer lifespan Life Histories

  10. Human Population and ZPG • Which type of growth do humans follow? • What is ZPG?

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