Assertion: steller sea lion's population | /r/CapableOf | decline by 80 percent
Facets:
value: mysteriously
type: MANNER
value: in 30 years
type: TEMPORAL
value: over the past four decades
type: TEMPORAL
value: since the 1970s
type: TEMPORAL
value: since the late-1970s
type: TEMPORAL
value: from its peak
type: OTHER
Source sentences:
text: The population has declined by 80 percent from its peak about four decades ago.
text: The population of Steller's sea lions in Alaska has declined as much as 80% since the 1970s.
text: Though the number of sea lions is growing in Glacier Bay, the population in Western Alaska has decreased by 80 percent since the late-1970s leading to that portion of the population's current listing as endangered.
text: When the Steller sea lion was listed as threatened in 1990, its population had declined by over 80 percent in 30 years.
text: Researchers warn that there are not enough Steller sea lions being born each year to rejuvenate their population, which is alarming news considering that the marine mammal's population, which has declined by 80 percent over the past four decades, is continuing to decrease.
text: It is important work: 30 years ago, the population of this species mysteriously declined by 80 percent and never recovered.