| 释义 | 
		Definition of adaptive radiation in English: adaptive radiationnoun mass nounBiology The diversification of a group of organisms into forms filling different ecological niches.  Example sentencesExamples -  Under the ecological theory of adaptive radiation, adaptation and reproductive isolation are thought to evolve as a result of divergent natural selection.
 -  As in other oceanic islands, the Canaries are characterized by a large number of endemic species as a result of apparent extensive speciation, putatively due to adaptive radiation and genetic drift.
 -  Thus, nowadays, these four species represent progressive stages of late speciation and constitute an excellent example of ecological speciation and adaptive radiation.
 -  Over the long-term, appearance of new species may result from speciation and adaptive radiation.
 -  In an insular environment a plant family may undergo adaptive radiation with new taxa adapted to and occupying different and sometimes narrow habitats.
 
    Definition of adaptive radiation in US English: adaptive radiationnoun Biology The diversification of a group of organisms into forms filling different ecological niches.  Example sentencesExamples -  Over the long-term, appearance of new species may result from speciation and adaptive radiation.
 -  Thus, nowadays, these four species represent progressive stages of late speciation and constitute an excellent example of ecological speciation and adaptive radiation.
 -  Under the ecological theory of adaptive radiation, adaptation and reproductive isolation are thought to evolve as a result of divergent natural selection.
 -  As in other oceanic islands, the Canaries are characterized by a large number of endemic species as a result of apparent extensive speciation, putatively due to adaptive radiation and genetic drift.
 -  In an insular environment a plant family may undergo adaptive radiation with new taxa adapted to and occupying different and sometimes narrow habitats.
 
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