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overpopulation
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overpopulation

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Overpopulation or overabundance is a state in which the population of a species is larger than the carrying capacity of its environment. This may be caused by increased birth rates, lowered mortality rates, reduced predation or large scale migration, leading to an overabundant species and other animals in the ecosystem competing for food, space, and resources. The animals in an overpopulated area may then be forced to migrate to areas not typically inhabited, or die off without access to necessary resources.

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13 sections
Contents
  • Background
  • Well-studied species
  • Deer
  • Birds
  • Pets
  • Population cycles
  • Determining population size/density
  • Fish populations
  • Introduced species
  • Criticism
  • Human overpopulation
  • See also
  • References

Overpopulation or overabundance is a state in which the population of a species is larger than the carrying capacity of its environment. This may be caused by increased birth rates, lowered mortality rates, reduced predation or large scale migration, leading to an overabundant species and other animals in the ecosystem competing for food, space, and resources. The animals in an overpopulated area may then be forced to migrate to areas not typically inhabited, or die off without access to necessary resources.

thumb|Ōkunoshima is overpopulated with rabbits.

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