Population Ecology Vocabulary

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Population Density

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The number of individuals per unit of area.

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Emigration

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Movement out of a range or area.

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Density-Independent Limiting Factors

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Factors that affect all populations similarly, regardless of population size or density.

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Demography

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The study of human populations.

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Density-Dependent Limiting Factors

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Factors that are influential only when population density reaches a certain level.

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Carrying Capacity

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The maximum number of individuals of a species that an environment can support.

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Logistic Growth

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A model of population growth that levels off as population size approaches carrying capacity.

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Exponential Growth

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A model of population growth where the population size increases rapidly without any limiting factors.

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Limiting Factor

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Any factor that restricts the size of a population.

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Immigration

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Movement into a range or area.