Population ecology

Population ecology is the branch of biology that studies the structures of populations and how they change. The field of population ecology often uses mathematical models to understand population dynamics and predict future trends.

Overview

Population ecology is a sub-field of ecology that deals with the dynamics of species populations and how these populations interact with the environment. It is the study of how the population sizes of species change over time and space.

History

The field of population ecology is relatively young, having been established in the 20th century. The first significant contributions to the field were made by Raymond Pearl and Alfred J. Lotka, who developed the Lotka–Volterra equations.

Key Concepts

Population Size and Density

The size of a population is the total number of individuals, while the density of a population is the number of individuals per unit area or volume.

Population Growth

Population growth is the change in a population size over time. It can be influenced by birth rates, death rates, immigration, and emigration.

Carrying Capacity

The carrying capacity of an environment is the maximum population size that the environment can sustain indefinitely.

See Also

• Community ecology
• Ecosystem ecology
• Behavioral ecology
• Evolutionary ecology

References

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