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Definition of Term

vertical migration
(english) The upward and downward movement of organisms in a lake or the ocean. Movement is usually into surface waters at night to feed and into deeper waters to avoid predators during the day. (See also: diurnal, nyctoepipelagic, epipelagic)
migração vertical
(portuguese) Movimento para baixo e para cima na coluna de água frequentemente cumprindo um ciclo diário. (See also: diurnal, nyctoepipelagic, epipelagic)

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