Classify species as threatened using ConR rules.

IUCN.eval (from ConR) approximates a full classification based on criterion B, using the EOO, AOO, and an estimate of the number of locations for a species. This function implements that classification, then makes the prediction coarser to "threatened" or "not threatened".

conr_thresholds(eoo, aoo, locations)

Arguments

eoo

The EOO in km^2.

aoo

The AOO in km^2.

locations

The number of threat-defined locations estimated by ConR.

Value

classification of whether a species is threatened or not.