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Bergmann's rule - Penguins on the Earth (mass m, height h) [1] Bergmann's rule is an ecogeographical rule that states that, within a broadly distributed taxonomic clade, populations and species of larger size are found in colder environments, while populations and species of smaller size are found in warmer regions. The rule derives from the ...
Allen's rule - Hare and its ears on the Earth [1]. Allen's rule is an ecogeographical rule formulated by Joel Asaph Allen in 1877, [2] [3] broadly stating that animals adapted to cold climates have shorter and thicker limbs and bodily appendages than animals adapted to warm climates.
Foster's rule, the island rule, or the island effect states that members of a species get smaller or bigger depending on the resources available in the environment. [28] [29] [30] The rule was first stated by J. Bristol Foster in 1964 in the journal Nature, in an article titled "The evolution of mammals on islands". [31]
In 1847, Carl Bergmann published his observations that endothermic body size (i.e. mammals) increased with increasing latitude, commonly known as Bergmann's rule. [9] His rule postulated that selection favored within species individuals with larger body sizes in cooler temperatures because the total heat loss would be diminished through lower surface area to volume ratios. [8]
Allen's rule; B. Bergmann's rule; D. Deep-sea gigantism; F. Foster's rule; G. Gloger's rule; H. ... This page was last edited on 3 September 2014, at 22:14 (UTC).
Buffalo Bills quarterback Josh Allen (17) celebrates with wide receiver Curtis Samuel (1) after Samuel scored a touchdown against the Denver Broncos during the fourth quarter of an NFL wild card ...
While Allen charges can be used in federal court, 22 states prohibit their use in state-level proceedings, including Kentucky. Other states that prohibit the use of Allen charges are: Alaska
Examination of a 9 m (30 ft) giant squid, the second largest cephalopod, that washed ashore in Norway in 1954 In zoology, deep-sea gigantism or abyssal gigantism is the tendency for species of deep-sea dwelling animals to be larger than their shallower-water relatives across a large taxonomic range.