Gloger's rule (Ecogeographic rules π)
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 avian ...
Deep-sea gigantism (Ecogeographic rules π)
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. Proposed explanations for this type of gigantism include necessary adaptation to colder temperature, food scarcity, reduced predation pressure ...
https://en.wikipedia.org/wiki/Deep-sea_gigantism
#DeepSeaGigantism #AnimalSize #MarineOrganisms #EcogeographicRules
Jordan's rule (Ecogeographic rules π)
Jordan's rule 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. The rule is named after David Starr Jordan, the father of American ichthyology....
Jordan's rule (Ecogeographic rules π)
Jordan's rule 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. The rule is named after David Starr Jordan, the father of American ichthyology....
Deep-sea gigantism (Ecogeographic rules π)
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. Proposed explanations for this type of gigantism include necessary adaptation to colder temperature, food scarcity, reduced predation pressure ...
https://en.wikipedia.org/wiki/Deep-sea_gigantism
#DeepSeaGigantism #AnimalSize #MarineOrganisms #EcogeographicRules
Heuristic (Ecogeographic rules π)
A heuristic or heuristic technique is any approach to problem solving that employs a pragmatic method that is not fully optimized, perfected, or rationalized, but is nevertheless "good enough" as an approximation or attribute substitution. Where finding an optimal solution is impossible or impractical, heuristic methods can be used to s...
https://en.wikipedia.org/wiki/Heuristic
#Heuristic #Adages #Heuristics #RulesOfThumb #BiologicalRules #EcogeographicRules
Allen's rule (Ecogeographic rules π)
Allen's rule is an ecogeographical rule formulated by Joel Asaph Allen in 1877, broadly stating that animals adapted to cold climates have shorter and thicker limbs and bodily appendages than animals adapted to warm climates. More specifically, it states that the body surface-area-to-volume ratio for homeothermic animals varies with the average temperature of the habi...
Allen's rule (Ecogeographic rules π)
Allen's rule is an ecogeographical rule formulated by Joel Asaph Allen in 1877, broadly stating that animals adapted to cold climates have shorter and thicker limbs and bodily appendages than animals adapted to warm climates. More specifically, it states that the body surface-area-to-volume ratio for homeothermic animals varies with the average temperature of the habi...
Foster's rule (Ecogeographic rules π)
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 sm...
https://en.wikipedia.org/wiki/Foster's_rule
#FosterSRule #AnimalSize #InsularEcology #EcogeographicRules #EcologyTerminology #EvolutionaryBiology
Thorson's rule (Ecogeographic rules π)
Thorson's rule is an ecogeographical rule which states that benthic marine invertebrates at low latitudes tend to produce large numbers of eggs developing to pelagic ) and widely dispersing larvae, whereas at high latitudes such organisms tend to produce fewer and larger lecithotrophic eggs and larger offspring, often by viviparity or ovoviviparity, which are often brooded.
Planetary Ecologist
