Invasion
Invasion Description
1st record: Talinn/Estonia/Gulf of Finland (1869, Leppakoski and Olenin 2000)
Geographic Extent
Talinn/Estonia/Gulf of Finland (1869, Leppakoski and Olenin 2000); Paldiski/Finland/Gulf of Finland (1887, Gislen 1950); Kunda/Estonia/Gulf of Finland (Kotta et al. 2002, http://www.sea.ee/); Kotka/Finland/Gulf of Finland (Furman 1990; Furman 1990); Helsinki/Finland/Gulf of Finland (Furman 1990; Furman 1990); Tvarminne/Finland/Gulf of Finland (Furman 1990; Furman 1990)
Vectors
| Level | Vector |
|---|---|
| Probable | Hull Fouling |
Regional Impacts
| Economic Impact | Industry | |
| In the Baltic Sea, where it is the only barnacle species present, A. improvisus is reported to contribute to hull fouling of ships and the fouling of power plants (Vuorinen et al. 1986). | ||
| Economic Impact | Shipping/Boating | |
| In the Baltic Sea, where it is the only barnacle species present, A. improvisus is reported to contribute to hull fouling of ships and the fouling of power plants (Vuorinen et al. 1986). | ||
| Ecological Impact | Competition | |
| In the Gulf of Finland, A. improvisus was classified as having moderate community impacts (Zaiko et al. 2011). | ||
| Ecological Impact | Habitat Change | |
| In the Gulf of Finland, A. improvisus was classified as having some habitat impacts (Zaiko et al. 2011). | ||
| Ecological Impact | Trophic Cascade | |
| In the Gulf of Finland, A. improvisus was classified as having moderate ecosystem impacts (Zaiko et al. 2011). | ||