Invasion
Invasion Description
1st record: Monterey/CA/Monterey Bay (8/2001, on floating docks, Silva et al. 2002)
Geographic Extent
Monterey/CA/Monterey Bay (8/2001, on floating docks, Silva et al. 2002); San Francisco Marina/CA/ San Francisco Marina Newsletter 2009; Zabin et al. 2009; Zabin et al. 2011; San Francisco/CA/South Beach Harbor (6/2009, Anonymous 2009; Zabin et al. 2011); Fort Mason, Pier 39, Fisherman's Wharf and along the Hyde Street pier, San Francisco/CA/San Francisco Bay (2012, Fimrite 6/20/2012); Pillar Point/CA/Half Moon Bay (6/2009, Zabin et al. 2009); Morro Bay Docks/CA/Morro Bay (2009, Kaplanis et al. 2016, 35º 22.2' N 120º 51.4' W)
Vectors
| Level | Vector |
|---|---|
| Alternate | Hull Fouling |
| Alternate | Natural Dispersal |
| Alternate | Ballast Water |
| Alternate | Fisheries Accidental (not Oyster) |
Regional Impacts
| Economic Impact | Aesthetic | |
| A 10-year program to control Undaria pinnatifida through hand removal by divers in the Monterey Bay National Marine Sanctuary has an allocation of $160,000. The motivation is to slow the spread of U. pinnatifida and protect native kelp communities. Evidence for negative impacts in California is unclear, but the native kelp community is highly valued (Anderson 2006; Davidson et al. 2015). | ||