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'''Population ecology''' is the branch of [[biology]] that studies the structures of [[population]]s 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 ==
<references />

[[Category:Ecology]]
[[Category:Population]]
[[Category:Biology]]

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Population ecology - Revision history

Prab: CSV import

Prab: CSV import