Assertion: blue whale's population | /r/HasProperty | uncertain
Facets:
value: over present abundance
type: OTHER
value: based on research from the iucn
type: OTHER
Source sentences:
text: The global population of blue whales is uncertain, but based on research from the IUCN, the global total for the species is estimated to be between 10,000-25,000 and classed as endangered.
text: The IUCN List of Endangered Species in its evaluation of the blue whales status writes, "Although there are uncertainties over present abundance, the total population has been depleted by at least 70%, and possibly as much as 90%, over the last three generations, assuming a 31-year average generation time.