Located or occurring outside the margins or edges; beyond the boundaries or limits of something.
From Latin 'extra' (outside) + 'marginal' (relating to margins or edges, from 'margo' meaning edge). The term appears in botanical and geographical literature to describe peripheral zones.
Extramarginal zones in ecology—areas beyond a species' mapped range—are where climate change is first pushing populations, creating new ecological communities scientists have never seen before!
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