Assertion: common periwinkle | /r/CapableOf | have altered the ecosystem
Facets:
value: by competing with other species
type: MANNER
value: in its non-native habitat
type: LOCATION
Source sentences:
text: In its non-native habitat (i.e., the U.S. and Canada), the common periwinkle is thought to have altered the ecosystem by competing with other species, and grazing on green algae, which has caused other algae species to become overabundant.