Invasion
Invasion Description
1st record: Mare Island/CA/San Francisco Bay (1947, Carlton 1979)
Geographic Extent
CA/Morro Bay (2013, Ruiz et al. , unpublished data); Monterey Marina/CA/Monterey Bay (1984, Boyd et al. 1986; Boyd et al. 1990; 2003, deRivera et al. 2005; 2011, California Department of Fish and Wildlife 2014); Santa Cruz/CA/Santa Cruz Harbor, Monterey Bay (1995, Stoner et al. 2002; 2003, de Rivera et al. 2005a); Hudson Landing West/CA/Elkhorn Slough (2003, de Rivera et al. 2005a); Moss Landing/CA/Elkhorn Slough (1996, Stoner et al. 2002; de Rivera et al. 2005a; CA/Half Moon Bay (1994, Cohen 2005); Mare Island/CA/San Francisco Bay (1947, Carlton 1979); Sierra Point Marina/CA/South San Francisco Bay (2004, Cohen et al. 2005); San Leandro Marina/CA/South San Francisco Bay (2004, Cohen et al. 2005); Coast Guard Island, Oakland/CA/Oakland estuary (2004, Cohen et al. 2005); Presidio Yacht Club, San Francisco/CA/Golden Gate (2004, Cohen et al. 2005); Richmond Marina/CA/San Francisco Bay (2004, Cohen et al. 2005); Pete's Harbor /CA/South San Francisco Bay (2004, Cohen et al. 2005); Coyote Point Marina/CA/South San Francisco Bay (2004, Cohen et al. 2005); Fruitvale Bridge, Alameda/CA/Oakland estuary (2004, Cohen et al. 2005); China Camp/CA/San Pablo Bay (2005, Robinson et al. 2011); CA/Tomales Bay (2001, Fairey et al. 2002; Nick's Cove/CA/Tomales Bay (de Rivera et al. 2005a); Sacramento Landing/CA/Tomales Bay (de Rivera et al. 2005a); Shell Beach/CA/Tomales Bay (de Rivera et al. 2005); CA/Bodega Harbor (1969-1971, Boyd 1972, cited by Sorte and Stachowicz 20112011, California Department of Fish and Wildlife 2014); Snug Harbor/CA/Bodega Harbor (1997, Stoner et al. 2002); Porto Bodega Marina/ CA/Bodega Bay (de Rivera et al. 2005a); Mason's Marina/CA/Bodega Harbor (de Rivera et al. 2005a); CA/Bodega Harbor (2001, Fairey et al. 2002; Clade A, Bock et al. 2012)
Vectors
| Level | Vector |
|---|---|
| Alternate | Hull Fouling |
Regional Impacts
| Ecological Impact | Competition | |
| Botryllus sclosseri was one of the eight most abundant species in Bodega Harbor both in 1969-1971 and in 2006. Spawning periods and abundance of species in this group appeared to be favored by a 1⁰C increase in average temperatures at this site over a 30-year period (Sorte and Stachowicz 2011). Heavy recruitment of B. schlosseri can affect subsequent community development. When recruitment was artifically enhanced (at Santa Cruz), communities remained dominated by B. schlosseri for several months, compared to controls (Sams and Keough 2012). | ||
| Ecological Impact | Habitat Change | |
| i>B. schlosseri recruitment also had increased densites of Balanus crenatus and an unidentified sponge (Sams and Keoguh 2012). | ||