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Encyclopedia

migration refers to directed, regular, or systematic movement of a group of objects, organisms, or people, including:

In ecology and anthropology:

In science:

In computing:

In arts and entertainment:

  • "Migrate" (song), a song from Mariah Carey's album E=MC²
  • Great Migrations (Greyhawk), a concept in the Dungeons & Dragons roleplaying game

Other uses:

  • Piercing migration, in body modification, a process that occurs when a body piercing moves from its initial location

See also

  • Diffusion


Wiktionary

Up to date as of January 15, 2010

Definition from Wiktionary, a free dictionary

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Contents

English

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Pronunciation

Noun

Singular
migration

Plural
migrations

migration (plural migrations)

  1. moving a place to live to another place for a while
  2. seasonal moving for animals, birds or fishes to breed or find a new hanging field
  3. (computing) changing a platform from an environment to another one

Derived terms

Related terms

Translations

The translations below need to be checked and inserted above into the appropriate translation tables, removing any numbers. Numbers do not necessarily match those in definitions. See instructions at Help:How to check translations.

French

Noun

migration f. (plural migrations)

  1. migration (of animals)
  2. migration (of people)

Related terms


Swedish

Noun

migration

  1. migration
Common
Singular Plural
Indefinite Definite Indefinite Definite
Nominative migration migrationen migrationer migrationerna
Genitive migrations migrationens migrationers migrationernas

Simple English

For people see Human migration; for data see Data migration.

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Migration is when animals move on an annual cycle. For example, caribou in the Arctic go south in winter and return in summer when it is warmer. Many birds migrate, such as geese and storks.

Migration is the travelling of long distances in search of a new habitat. The trigger for the migration may be local climate, local availability of food, or the season of the year. To be counted as a true migration, and not just a local dispersal, the movement should be an annual or seasonal event.

Many birds migrate south for the winter, and young Atlantic salmon leave the river of their birth when they have reached a few inches in size.[1]

Many species in the sea have a daily migration. Plankton go up for the day where there is light, and down at night, where they are less easy to find. The many species which feed on them follow them up and down.

Migration is an evolutionary force. This is because it is a major source of natural selection. The success or failure of individual animals to make the journey is usually needed for them to reproduce.

Many parts of the world have a strongly seasonal climate. In order to survive, many species need to breed in one place and, later, eat in another place. The simplest example is the African herbivores, who follow the growth of grass in East Africa. This region has seasonal rainfall, and so it has seasonal growth of grass. Their predators follow them.[1]

References

  1. 1.0 1.1 David Attenborough (1990). The trials of life. London: Collins/BBCBooks. p. 123. ISBN 0002199408. 


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