Assertion: dwarf mistletoe | /r/HasProperty | serious threat
Facets:
value: often
type: TEMPORAL
value: in extensively managed forests
type: LOCATION
Source sentences:
text: Dwarf mistletoes are often a serious threat in extensively managed forests, hence, control measures must be economical.
text: It is interesting that the dwarf mistletoes (Arceuthobium) that are serious pathogens on conifers in the western United States have not spread to any pine species in the southeastern U.S.