After a mass extinction event, the organisms that survive face unique circumstances in which there are fewer predators and more resources available. This is termed Adaptive Radiation.
Adaptive Radiation
- Adaptive radiation, which occurs when an environmental change makes new resources available, modifies biotic interactions, or creates new environmental niches, is a process in evolutionary biology wherein animals rapidly diverge from an ancestral species into a variety of different forms.
- This process culminates in the speciation and phenotypic adaptation of numerous species with various physical and physiological features, all descended from a single ancestor. Finch speciation on the Galapagos Islands, often known as "Darwin's finches" is the classic instance of adaptive radiation, although there are other cases throughout the world.
- An ecological opportunity or a new adaptive zone is assumed to be the catalyst for adaptive radiations.
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