Assertion: krill's population | /r/CapableOf | decline by 70 to 80 percent
Facets:
value: over the past 40 years
type: TEMPORAL
value: in those areas
type: LOCATION
Source sentences:
text: Over the past 40 years, populations of adult Antarctic krill have declined by 70 to 80 percent in those areas, though researchers debate whether that drop is due to the effects of climate change, a rebound in whale populations after the end of commercial whaling or some combination of those pressures.