Assertion: carp's introduction | /r/HasSubevent | river
Facets:
value: in asia
type: LOCATION
value: in north america
type: LOCATION
value: in europe
type: LOCATION
Source sentences:
text: In river and lake ecosystems in North America, Asia and Europe, the introductions of Asian carps have resulted in the decline of many native fish species, with planktivorous fish and fish with planktivorous stages being particularly affected (e.g., Arthur et al. 2010; Pegg et al. 2009).