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Scientific Foundations for an IUCN Red List of Ecosystems

Table 2

Biotic and abiotic variables for assessing functional decline in the Aral Sea ecosystem, their reference values when the ecosystem was in a functional state (between 1911 and 1960) and bounded thresholds that define the collapsed state, assuming collapse occurred between 1976 and 1989.

Table 2

doi: https://doi.org/10.1371/journal.pone.0062111.t002