Invasion
Invasion Description
1st Record: Morrison Street BridgePortland/OR/Willamette River (Lampman
Geographic Extent
Astoria/OR/mouth of Columbia River (Chapman 1942); near Kalama/WA/Columbia River (Chapman 1942),WAPortland/OR/Willamette-Columbia Rivers (Farr and Ward 1993); Kelly Point Park/Portland/Columbia Slough (2002, Sytsma et al. 2004)
Vectors
Level | Vector |
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