Assertion: myna's impact | /r/HasProperty | negative
Facets:
Source sentences:
text: Although recent research ... has suggested that the common myna has a negative impact on the long-term abundance of some native bird species, the significance of this impact has been questioned, as has the methodology used for the research.
text: There is concern that common mynas have a negative impact on native birds through competition for food, nesting sites and territories and because of this concern, community groups and local councils conduct myna trapping and killing programs.
text: Although recent research using long-term observations of bird abundance in Canberra has suggested that the common myna has a negative impact on the long-term abundance of some native bird species , the significance of this impact has been questioned, as has the methodology used for the research.