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Gloger's rule is an ecogeographical rule which states that within a species of endotherms, more heavily pigmented forms tend to be found in more humid environments, e.g. near the equator. It was named after the zoologist Constantin Wilhelm Lambert Gloger , who first remarked upon this phenomenon in 1833 in a review of covariation of climate and ...
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".
Ecogeographic rules describe similar patterns of variation within and across species and their correlation to biogeography, particularly latitude. While they are ...
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.
Biological rules describe patterns of variation within and across species most often in regard to size. While they are described as rules there are often many ...
This colouring strongly follows Gloger's rule, as it helps to regulate the impact of sunlight. [7] This allows the paler tortoise to stay in the desert heat for longer. [citation needed] It is also an effective camouflage in the desert. [citation needed] The plastron is light yellow, often with two dark triangles on each abdominal scute.
A Food Safety Expert Breaks It Down Amid New FDA Rules. Korin Miller. January 23, 2025 at 12:52 PM. This Berry Is Most Likely To Carry Illnesses Stefan Tomic - Getty Images.
Sieverts's law, in physical metallurgy, is a rule to predict the solubility of gases in metals. Named after German chemist Adolf Sieverts (1874–1947). Smeed's law is an empirical rule relating traffic fatalities to traffic congestion as measured by the proxy of motor vehicle registrations and country population. After R. J. Smeed.