population ecology
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Population Ecology

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Population Ecology - PowerPoint PPT Presentation


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Population Ecology. Population. A group of individuals of a single species in a given area Density Dispersion. Clumped. Uniform. Random. Demography. The study of statistics that affect population size. Life Table. Survivorship Curve. Reproductive Table. Life Histories. Semelparity

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PowerPoint Slideshow about ' Population Ecology' - meryle


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Presentation Transcript
population
Population
  • A group of individuals of a single species in a given area
    • Density
    • Dispersion
demography
Demography
  • The study of statistics that affect population size
life histories
Life Histories
  • Semelparity
  • Iteroparity
population growth
Population Growth
  • Exponential Growth
    • dN/dt = rmaxN
      • dN = change in number
      • dt = change in time
      • rmax = intrinsic growth rate
      • N = number of ind.
population growth1
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
life histories1
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
population limiting factors
Population Limiting Factors
  • Density Independent
    • Natural disasters
  • Density Dependent
    • Disease
human population and zpg
Human Population and ZPG
  • Which type of growth do humans follow?
  • What is ZPG?
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