Invasion
Invasion Description
The date of invasion in the Gulf of Riga is unknown, but it probably occurred in the late 19th century.
Geographic Extent
Estonia-Latvia/Parun Bight, Gulf of Riga (Olenin and Leppakoski 2000)
Vectors
| Level | Vector |
|---|---|
| Alternate | Hull Fouling |
| Alternate | Ballast Water |
Regional Impacts
| Ecological Impact | Competition | |
| In the Gulf of Bothnia, A. improvisus was classified as having some community impacts (Zaiko et al. 2011). | ||
| Ecological Impact | Habitat Change | |
| In the Gulf of Riga, A. improvisus was classified as having some habitat impacts (Zaiko et al. 2011). | ||