Miklos Udvardy created the modern system for these regions in a 1975 paper for IUCN in an attempt to unify discussions in biogeography and conservation. For 10 points each:
[10h] Name these broadest biogeographical divisions of the world, which can be subdivided into “bioregions” or “biogeographical provinces.” While “kingdoms” and “regions” correspond to only flora and only fauna, these divisions encompass commonalities seen across all terrestrial organisms.
ANSWER: biogeographic realms [prompt on ecozones]
[10m] Boundaries between realms often have transitional zones called the “eco-” versions of this term. In evolutionary biology, this term refers to a gradient of a trait in a species across its geographical range.
ANSWER: cline [accept ecocline or ecotone]
[10e] Some ecoregions are defined by being “areas of [this trait]”. In ecology, this term refers to a species that is found exclusively in a small, well-defined geographic area.
ANSWER: endemism [or endemic species; accept areas of endemism]
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