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Seasonal human migration is the movement of people from one place or another on a seasonal basis. It occurs most commonly due to seasonal shifts in demand for labor . It includes migrations such as moving sheep or cattle to higher elevations during summer to escape the heat and find more forage .
Animal migration is the relatively long-distance movement of individual animals, usually on a seasonal basis. It is the most common form of migration in ecology. It is found in all major animal groups, including birds , mammals , fish , reptiles , amphibians, insects , and crustaceans .
Migration is the regular seasonal movement, often north and south, undertaken by many species of birds. Migration is marked by its annual seasonality and movement between breeding and non-breeding areas. [13] Nonmigratory bird movements include those made in response to environmental changes including in food availability, habitat, or weather.
The seasonal migration of birds across the globe is a remarkable wonder of our natural world. The National Audubon Society's Bird Migration Explorer provides an opportunity to track some of these ...
Animal migration is the relatively long-distance movement of individual animals, usually on a seasonal basis. It is the most common form of migration in ecology. [ 5 ] It is found in all major animal groups, including birds , [ 6 ] mammals , [ 7 ] fish , [ 8 ] [ 9 ] reptiles , [ 10 ] amphibians, insects , [ 11 ] and crustaceans .
Ocean migration of Atlantic salmon from Connecticut River [4] As with various other aspects of fish life, zoologists have developed empirical classifications for fish migrations. [5] The first two following terms have been in long-standing wide usage, while others are of more recent coinage.
Diel vertical migration (DVM), also known as diurnal vertical migration, is a pattern of movement used by some organisms, such as copepods, living in the ocean and in lakes. The adjective "diel" (IPA: / ˈ d aɪ. ə l /, / ˈ d iː. əl /) comes from Latin: diēs, lit. 'day', and refers to a 24-hour period.
It orchestrates seasonal growth, development, reproduction, migration, and dormancy that affect survivorship and reproductive success. [14] Changes in photoperiod over days and seasons created the opportunity for the development of internal clocks and eventually create circadian and circannual rhythms. [ 3 ]