Invasion

Invasion Description

1st record: OR/Coos Bay (1950, Hedgpeth 1952, cited by Carlton 1979)

Geographic Extent

OR/Coos Bay (1950, Hedgpeth 1952, cited by Carlton 1979); Graveyard Point/OR/Coos Bay-Coos River (1970, Carlton 1989); Coos Bay/OR/Isthmus Slough (1971, Carlton 1989); OR/Haynes Inlet, Coos Bay (1971, 1983, Carlton 1989); Barview/OR/Joe Ney Slough (1989, Carlton 1989)