Assertion: pika's population | /r/HasProperty | stable
Facets:
value: usually
type: DEGREE
value: over time
type: TEMPORAL
Source sentences:
text: Northern pikas have stable populations but low reproductive rates.
text: Rock dwellers are generally long-lived (up to seven years) and occur at low density, their populations tending to be stable over time.
text: The population is usually stable with one litter of up to nine (usually three or four) offspring being produced each year, though two smaller litters may be produced in the more southerly part of the range.