Biology Chapter 4 Review- Population Ecology

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What is population density?

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Population density is the number of individuals of a species per unit area or volume, often expressed as individuals per square kilometer or individuals per liter.

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How do you calculate population density?

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Population density = Total number of individuals / Total area or volume.

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What is emigration?

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Emigration is the process of individuals moving out of a population, which can lead to a decrease in population size.

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What is immigration?

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Immigration is the process of individuals moving into a population, which can lead to an increase in population size.

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What are limiting factors?

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Limiting factors are environmental conditions that restrict population growth, such as food availability, habitat space, and predation.

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What is zero population growth?

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Zero population growth occurs when the number of births equals the number of deaths, resulting in a stable population size.

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What is exponential growth?

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Exponential growth is a rapid increase in population size when resources are unlimited, often represented by a J-shaped curve.

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What is logistic growth?

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Logistic growth is a population growth model that accounts for limiting factors, resulting in an S-shaped curve as the population reaches carrying capacity.

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What is carrying capacity?

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Carrying capacity is the maximum number of individuals of a species that an environment can sustainably support.

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What is a biotic factor?

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Biotic factors are living components of an ecosystem that affect population dynamics, such as competition, predation, and disease.