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Mean Species Abundance

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Mean species abundance, the average abundance of originally occurring species relative to their abundance in an undisturbed reference state, expressed as a fraction between 0 and 1 where 1 is an intact ecosystem.

notation05.06
broader (up)unece:biodiversity-and-land-use
scopeNoteThe GLOBIO indicator, used by the Global Biodiversity Score among others. Offered beside potentially disappeared fraction of species because ESRS E4 names a family of acceptable indicators rather than prescribing one. ESRS E4; TNFD LEAP approach.
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