Assertion: beaver's population | /r/AtLocation | check
Facets:
value: at a small population size
type: OTHER
Source sentences:
text: They were first brought to Louisiana in the early 1930s for the fur industry, and the population was kept in check, or at a small population size, because of trapping pressure from the fur traders.
text: When sea otter populations are healthy, urchin populations are kept in check, and kelp is abundant.