Introduced Marine Organisms in Norwegian Waters, Including Svalbard

Abstract

This chapter documents the various alien marine organisms and their associated pathogens in Norwegian waters, including Svalbard. It estimates that about 45 alien marine species have become established in these waters, comprising about 22 plant species (ca 12 macroalgae and 10 phytoplankton), 22 invertebrate species including parasites and pathogens, and a single fish species. Attention is drawn to the ecological and socio-economic damage that has been or potentially may be caused by introductions and transfers of free-living organisms and their associated parasites and pathogens/diseases in Norway.