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They also showed why lifespan scales as the + 1 ⁄ 4 power and heart rate as the - 1 ⁄ 4 power. Blood flow (+ 3 ⁄ 4) and resistance (-3 ⁄ 4) scale in the same way, leading to blood pressure being constant across species. [37] Hu and Hayton in 2001 discussed whether the basal metabolic rate scale is a 2 ⁄ 3 or 3 ⁄ 4 power of body mass.
The pygmy mammoth is an example of insular dwarfism, a case of Foster's rule, its unusually small body size an adaptation to the limited resources of its island home.. A biological rule or biological law is a generalized law, principle, or rule of thumb formulated to describe patterns observed in living organisms.
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 relationship between size in linear dimensions meaning that both ...
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 ...
Bruun Rule: Earth science Per Bruun Buys Ballot's law: Meteorology: C.H.D. Buys Ballot: Byerlee's law: Geophysics: James Byerlee: Carnot's theorem: Thermodynamics: Nicolas Léonard Sadi Carnot: Cauchy's integral formula Cauchy–Riemann equations See also: List of things named after Augustin-Louis Cauchy: Complex analysis: Augustin Louis Cauchy
Rensch's rule is a biological rule on allometrics, concerning the relationship between the extent of sexual size dimorphism and which sex is larger. Across species within a lineage, size dimorphism increases with increasing body size when the male is the larger sex, and decreases with increasing average body size when the female is the larger sex.
Jordan's rule (sense 1) is an ecogeographical rule that describes the inverse relationship between water temperature and meristic characteristics in various species of fish. The most commonly observed relationship is that fin ray , vertebrae , or scale numbers increase with decreasing temperature.
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.