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It was finally identified that the cycle of high and low catches ran over approximately a ten-year period. The most well known example of creatures which have a population cycle is the lemming. [3] The biologist Charles Sutherland Elton first identified in 1924 that the lemming had regular cycles of population growth and decline. When their ...
Fluctuations in the lemming population affect the behaviour of predators, and may fuel irruptions of birds of prey such as snowy owls to areas further south. [8] For many years, the population of lemmings was believed to change with the population cycle , but now some evidence suggests their predators' populations, particularly those of the ...
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Here populations are allowed to increase above their normal capacity because there is a time lag until negative feedback mechanisms bring the population back down. This effect has been used to explain the widely fluctuating population cycles of lemmings, [3] forest insects as well as the population cycles of larger mammals such as moose and ...
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The Canadian lemming was formerly thought to be a subspecies of the Siberian brown lemming (Lemmus sibiricus), but those were split into two distinct species. They were still considered the same species as the Beringian lemming ( Lemmus nigripes ); the combined species was named the North American brown lemming with the scientific name L ...
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An insular population inhabits Novaya Zemlya; a 2021 study which performed genetic analysis on the mtDNA of the Novaya Zemlya population found them to group with the Norway lemming (L. lemmus) despite their similar appearance to mainland L. sibiricus, and classified them as the subspecies L. l. chernovi, or Novaya Zemlya lemming.