Species Regional Summary
Amphibalanus improvisus
None ( B-IV )

Invasion History Vectors Impacts References

Invasion

Invasion Description

1st record? Copenhagen/Denmark/Oresund (1880, Jensen and Knudsen 2005); Helsingor/Denmark/Oresund (1880, Jensen and Knudsen 2005)

Geographic Extent

Copenhagen/Denmark/Oresund (1880, Jensen and Knudsen 2005); Helsingor/Denmark/Oresund (1880, Jensen and Knudsen 2005); Malmo/Sweden/Oresund (1902, Gislen 1950); Raa/Sweden/Oresund (Furman 1989; 1990); Germany/Darß-Zingst-Bodden-Chain (Wittfoth and Zettler 2013)

Vectors

Level Vector
Alternate Hull Fouling
Alternate Natural Dispersal

Regional Impacts

Economic ImpactShipping/Boating
Costs of fouling of recreational boats in Swedish waters, due to A. improvisus, were estimated at 122-331 million Swedish kroner, SK, equal to 18-49 million dollars, per year. Fouling of commercial vessels was estimated at 33-49 SK, equal to 5-7 million dollars, per year, for a total cost of 23-56 million dollars per year (Gren et al. 2009).
 
Economic ImpactIndustry
Costs of fouling of power plants in Swedish waters were estimated at 10-38 SK (=1.5-5.5 million dollars) per year (Gren et al. 2009).
 

References

Gislen, Torsten (1950) {On the invasion and distribution of Balanus improvisus along the coast of Sweden.], Fauna och Flora 45: 32-37

Gren, Ing-Marie; Isacs, Lina; Carlsson, Mattias (2009) Costs of alien invasive species in Sweden, Ambio 38(3): 135-140

Jensen, Kathe R.; Knudsen, Jorgen (2005) A summary of alien marine benthic invertebrates in Danish waters., Oceanological and Hydrobiological Studies 34 (suppl. 1): 137-161


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