Species Regional Summary
Sargassum muticum
Northern California to Mid Channel Islands ( NEP-V )

Invasion History Vectors Impacts References

Invasion

Invasion Description

1st record; Berkeley Marina /CA/San Francisco Bay (1973, Cohen and Carlton 1995)

Geographic Extent

CA/Tomales Bay (1973?, Cohen 2005, Kjeldsen 1995, A checklist of the marine algae in the vicinity of Sonoma State University, Rohnert Park, California. Collections from Sonoma, Marin, and Mendocino counties., cited at http://ucjeps.berkeley.edu/guide/brown83.html ); Berkeley Marina /CA/San Francisco Bay (1973, Cohen and Carlton 1995); Golden Gate Bridge, San Francisco/CA/Golden Gate (1984, Silva 1979, Danek 1984, cited by Cohen and Carlton 1996); San Francisco Yacht Harbor/CA/San Francisco Bay (1984, Silva 1979, Danek 1984, cited by Cohen and Carlton 1996); Tiburon/CA/San Francisco Bay; Alameda/CA/San Francisco Bay (1984, Silva 1979, Danek 1984, cited by Cohen and Carlton 1996);; Sausalito/CA/San Francisco Bay (1984, Silva 1979, Danek 1984, cited by Cohen and Carlton 1996) ; Pier 39, San Francisco/CA/San Francisco Bay (2004, Cohen et al. 2005); Presidio Yacht Club, San Francisco/CA/Golden Gate (2004, Cohen et al. 2005); Fruitvale Bridge, Alameda/CA/Oakland estuary 2004, Cohen et al. 2005); Twin Sisters/CA/San Pablo Bay (1983, Josselyn and West 1985, infrequent, 37.988333, -122.441111); Monterey/CA/Monterey Bay (1977, Carlton et al. 1996; Cohen 2005); CA/Elkhorn Slough (1977, Cohen 2005); Moss Landing/CA/Moss Landing Harbor (2011, California Department of Fish and Wildlife 2014); Carmel/CA/Carmel Bay (1977, Carlton et al. 1996; Cohen 2005); San Luis Obispo County/CA/Pacific Ocean (1973, Norton 1981); Diablo Canyon/CA/Pacific Ocean (2004, Maloney 2006)

Vectors

Level Vector
Alternate Oyster Accidental
Alternate Hull Fouling
Alternate Natural Dispersal

Regional Impacts

Ecological ImpactHabitat Change
In field cage experiments, juvenile Chinook Salmon (Oncorhynchus tshawystcha) were reared in several habitats, bare sand, Eelgrass (Zostera marina, Sargassum muticum and mixed Eelgrass-Sargassum. Growth was best in the mixed habitat, suggesting that habitat variety is important (Hughes et al. 2020).
 

References

Full Reference List for Sargassum muticum

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