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Foster's rule - Wikipedia

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Foster's rule, also known as the island rule or the island effect, is an ecogeographical rule in evolutionary biology stating that members of a species get smaller or bigger depending on the resources available in the environment. For example, it is known that pygmy mammoths evolved from normal mammoths on small islands. Similar evolutionary paths have been observed in elephants, hippopotamuses, boas, sloths, deer (such as Key deer) and humans.[1][2] It is part of the more general phenomenon of island syndrome which describes the differences in morphology, ecology, physiology and behaviour of insular species compared to their continental counterparts.

Foster's rule - Wikipedia Jump to content From Wikipedia, the free encyclopedia Ecogeographical rule in evolutionary biology "Island rule" redirects here. For the concept in black hole theoretical physics, see Black hole information paradox § Recent developments . Garganornis ballmanni , a very large fossil goose from the Gargano and Scontrone islands of the Late Miocene Foster's rule , also known as the island rule or the island effect , is an ecogeographical rule in evolutionary biology stating that members of a species get smaller or bigger depending on the resources available in the enviro

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