Invasion

Invasion Description

1st Record? Ilwaco/WA/Baker Bay, Columbia River (1980, Furota and Emmett 1993)

Geographic Extent

Grays Harbor/WA/Chehalis River Estuary (http://www.nws.usace.army.mil/publicmenu/DOCUMENTS/Chehalis_Created_Slough_2000_Monitoring_.pdf); WA/Beardslee Slough, Grays Harbor (1999, Wilson and Partidge 2007); WA/upper Palix River, Willapa Bay (2000, Cohen et al. 2001); Astoria/OR/Youngs Bay (1975-1979, Banse 1979); Astoria Yacht Club/OR/Columbia River [4/17/2002, 7/8/2002] Samples: 53-ES-02, 16-ES-02, Dates: April 17, 2002, July 8, 2002, 46.1705, -123.8363, Temperature: 9 C, 20 C Salinity: 0.75ppt, 6ppt (Sytsma et al. 2005); Wallooskea/OR/Youngs River, [7/8/2002, Salinity: 4ppt, 46.1449, -123.8138, Sytsma et al. 2005); Ilwaco/WA/Baker Bay (Jones 1983; Systma et al. 2004, 5-20 PSU); Ilwaco/WA/Baker Bay, Ilwaco Harbor tideflat (7/9/2002. 8/13/2001, Salinity: 10ppt; Sytsma et al. 2005, 46.3025, -124.0366); OR/Trestle Bay Jetty (4/17/2002, 46.2227, -124.0023, Sytsma et al. 2005); WA/Mid-Lewis and Clark River [10/2/2002,Temperature: 16, Salinity: 5ppt, 46.1176, -123.8611, Sytsma et al. 2005); OR/Tillamook Bay (Golden et al. 1998, cited by Cohen 2004); OR/Salmon River estuary (Carlton 1989); Lincoln County/OR/Salmon River (after 1975, Banse 1979); OR/Siletz River estuary (after 1975, Banse 1979, Carlton 1989); OR/Yaquina Bay (Castillo et al. 2000); OR/Umpqua River (1983, Carlton 1989); Charleston/OR/Kunz Marsh, South Slough, Coos Bay (1998, Fritz, 2001)