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Evolution associated with altered habit and habitat, usually in isolated species populations.



(from Greek klados, “branch,” and “genesis”), a form of evolution of a group of living organisms leading by means of divergence to an increase in the number of separate species, genera, and families. The term, introduced by the German biologist B. Rensch in 1947, is often used as a synonym for speciation in the narrow sense—not completely accurately, since cladogenesis includes any increase in evolutionary diversity. The concept of cladogenesis is closely related to adaptive radiation and idioadaptation.


Takhtadzhian, A. L. Sistema i filogeniia tsvetkovykh rastenii. Moscow-Leningrad, 1966. Pages 15–25.
Rensch, B. Neuere Probleme der Abstammungslehre: Die transspezifische Evolution, 2nd ed. Stuttgart, 1954.
References in periodicals archive ?
Of the 68 cladogenetic events, 40 speciation events exhibit a biogeographic shift indicating speciation by dispersal (= 37.
There are three prediction models that explain patterns of colonization in islands with montane and lowland biomes, including: (1) a montane clade nested within a lowland clade on the same island is predicted when a single colonization event of the lowland biome is followed by a cladogenetic colonization by a new population of the montane biome, (2) a lowland clade nested within a montane clade within an island is predicted when a single highland colonization event is followed by lowland colonization by a new population, and (3) a separate montane and lowland clade is predicted during multiple parallel colonization events.