Invasion
Invasion Description
1st record: OR-WA/Columbia River Estuary (1999, Systsma et al. 2004)
Geographic Extent
OR-WA/Columbia River Estuary (1999, Systsma et al. 2004); Wallooskea/OR/Youngs River (2002, Systsma et al. 2004); Sauvie Island, Portland/OR/Crane Lake (2002, Systsma et al. 2004); Not found in long-term sampling at Vancouver, WA (2005-2013, Dexter est al. 2015)
Vectors
| Level | Vector |
|---|---|
| Probable | Ballast Water |
Regional Impacts
| Ecological Impact | Competition | |
| Sinocalanus doerrii has a substantial period of temporal overlap and potential competition with the native Northeast Pacific form of 'Eurytemora affinis' in the Columbia estuary (Bollens et al. 2012). | ||