Species Regional Summary
Amathia verticillata
San Diego Bay ( P020 )

Invasion History Vectors Impacts References

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 ImpactCompetition
Amathia verticillata grows epiphytically on the leaves of eelgrass (Zostera marina) in San Diego Bay, killing them (Williams 2007).
 
Ecological ImpactHabitat 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).
 

References

Full Reference List for Amathia verticillata

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