Invasion
Invasion Description
1st Record: Berkeley/CA/San Francisco Bay (1932, Hartman 1936, cited by Carlton 1979)
Geographic Extent
Stege Marsh, Richmond/CA/San Francisco Bay (2010, Zakas and Wares 2012); Berkeley/CA/San Francisco Bay (1932, Hartman 1936, cited by Carlton 1979); Rodeo Marina/CA/San Pablo Bay (2004, Cohen et al. 2005); Pier 39, San Francisco/CA/San Francisco Bay (2004, Cohen et al. 2005); Port San Pablo Yacht Harbor/CA/San Pablo Bay (2004, Cohen et al. 2005); Palo Alto/CA/South San Francisco Bay (1981, Nichols and Thompson 1985); CA/Grizzly Bay (Peterson et al. 2010, dry years); Antioch/CA/Suisun Bay (Light 1977); Sherman Island/CA/Sacramento-San Joaquin Delta (Hopkins 1986); cargo ship 'Florikan'/CA/Suisun Bay (Llanso et al. 2011); Fresh-Brackish-Estuarine transition (Sacramento-River-Suisun-San Pablo, mean salinity 4.9 PSU) to Marine-Muddy (Central and South Bay, mean salinity 27.5 PSU)
Vectors
| Level | Vector |
|---|---|
| Alternate | Ballast Water |
| Alternate | Hull Fouling |
| Alternate | Oyster Accidental |
Regional Impacts
| Ecological Impact | Herbivory | |
| Nichols and Thompson (1985) suggested that an upstream movement of abundant suspension-feeding benthos, including S. benedicti, was responsible for a decline in phytoplankton biomass in Suisun Bay during a period of low river flow and high salinity 1976-1977. | ||