Invasion
Invasion Description
1st Record: San Diego/CA/San Diego Bay (1905, Robertson 1905, cited by Cohen and Carlton 1995)
Geographic Extent
San Diego/CA/San Diego Bay (1905, Robertson 1905, cited by Cohen and Carlton 1995; 2001, Fairey et al. 2002); Sunroad Marina/CA/San Diego Bay (2003, de Rivera et al. 2005); Chula Vista Marina/CA/San Diego Bay (2003, de Rivera et al. 2005)
Vectors
| Level | Vector |
|---|---|
| Probable | Hull Fouling |
Regional Impacts
| Ecological Impact | Competition | |
| Amathia verticillata grows epiphytically on the leaves of eelgrass (Zostera marina) in San Diego Bay, killing them (Williams 2007). | ||
| Ecological Impact | Habitat Change | |
| Amathia verticillata kills eelgrass plants in San Diego Bay, creating gaps in the seagrass canopy and bare patches of sediment, which are then colonized by adult plants (Williams 2007). | ||