Invasion
Invasion Description
1st Record: Astoria/OR/Columbia River (1965, Haertel and Osterberg 1967; Carlton 1979)
Geographic Extent
Astoria/OR/Columbia River (1965, Haertel and Osterberg 1967; Carlton 1979); Fort Canby, boat launch, high and low marsh/WA/Columbia River (2002, Systma et al. 2004); culvert, Clatsop County/OR/Lewis and Clark River (Sytsma et al. 2004, USGS Nonindigenous Aquatic Species Program 2008); Windust/WA/Snake River, Lake Sacajawea (Draheim et al. 2006, USGS Nonindigenous Aquatic Species Program 2008); just south of Wallula/WA/Columbia River, Lake Wallula (Draheim et al. 2007, USGS Nonindigenous Aquatic Species Program 2008)
Vectors
Level | Vector |
---|---|
Alternate | Hull Fouling |
Alternate | Oyster Accidental |
Alternate | Fisheries Accidental (not Oyster) |
Alternate | Aquatic Plant Shipments |