Assertion: whooper swan | /r/CapableOf | play vital role
Facets:
value: in affecting plant community structures
type: OTHER
value: due to the large quantities of biomass
type: CAUSE
Source sentences:
text: Whooper swans play a vital role in affecting plant community structures, due to the large quantities of biomass being lost when they feed on the submerged macrophyte they prefer, fennel pondweed, which stimulates the pondweed to grow at intermediate depths