Assertion: beaver | /r/HasProperty | a keystone species
Facets:
value: in an ecosystem
type: LOCATION
value: in north america
type: LOCATION
Source sentences:
text: Beavers are a "keystone species", meaning they provide more important ecosystem services than their numbers alone would suggest.
text: The beaver is known as a 'keystone species' because of its significant positive influence on its environment.
text: While beavers are considered to be pests by some, scientists actually have proven that beavers are a “Keystone” species in North America.
text: This is why beavers are regarded as a keystone species–a species that disproportionately affects its environment and alters its ecosystem.
text: The beaver is a keystone species that affects habitat structure and dynamics through the damming and diverting of streams, and the felling of trees and other woody vegetation.
text: The beaver (Castor canadensis) is a keystone species that affects habitat structure and dynamics through the damming and diverting of streams, and the felling of trees and other woody vegetation.
text: Beavers are a keystone species, having the ability to change the flow and nutrient cycling of a watershed by building dams to regulate water depth.
text: Beavers’ activity helps keep stream beds healthy and in good repair, and beavers are a keystone species in an ecosystem because they create wetlands that are used by many other species.
text: Beavers are so important in ecology that they are known as a keystone species.