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

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Presentation transcript:

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

Survivorship Curve

Reproductive Table

Population Growth Exponential Growth dN/dt = r max N dN = change in number dt = change in time r max = intrinsic growth rate N = number of ind.

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

Population Growth Reality

Life Histories 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

Population Limiting Factors Density Independent Natural disasters Density Dependent Disease

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

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