biogeographic realm


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biogeographic realm

[‚bī·ō‚jē·ə‚graf·ik ′relm]
(ecology)
Any of the divisions of the landmasses of the world according to their distinctive floras and faunas.
References in periodicals archive ?
The mayfly genus Heptagenia Walsh, 1863, (Insecta: Ephemeroptera: Heptageniidae) is distributed throughout the Holarctic biogeographic realm and part of the Oriental realm, with twelve species currently recognized from North America (Webb et al.