Invasion

Invasion Description

1st Record: OR-WA/Trestle Bay, Columbia River Estuary (1994, Hinton and Emmet 1995, cited by Sytsma et al. 2005; http://www.nwfsc.noaa.gov/publications/techmemos/tm39/tm39.pdf)

Geographic Extent

OR-WA/Trestle Bay, Columbia River Estuary (Sytsma et al. 2005, http://www.nwfsc.noaa.gov/publications/techmemos/tm39/tm39.pdf; 'However, Jeff Cordell has found N. vectensis in almost every salt marsh of Oregon and Washington he has sampled in the last 20 years.' Systma et al. 2005)