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Population Ecology

This overview of population ecology explores key concepts such as population density, dispersion patterns, and demography, which includes life tables, survivorship curves, and reproductive strategies. It outlines population growth models, including exponential and logistic growth equations, and the intrinsic growth rate. Additionally, the distinctions between r-selected and K-selected species are highlighted, along with factors that limit populations, including density-dependent and independent factors. This comprehensive guide is crucial for understanding the dynamics of species populations and their ecological interactions.

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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. Clumped

  4. Uniform

  5. Random

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

  7. Life Table

  8. Survivorship Curve

  9. Reproductive Table

  10. Life Histories • Semelparity • Iteroparity

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

  12. 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

  13. Logistic Growth

  14. 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

  15. Population Limiting Factors • Density Independent • Natural disasters • Density Dependent • Disease

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

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