Using this graphic and referring to it is encouraged, and please use it in presentations, web pages, newspapers, blogs and reports.
For any form of publication, please include the link to this page and give the cartographer/designer credit (in this case Hugo Ahlenius, UNEP/GRID-Arendal)
Expert judgment by the report authors (Nellemann, C et al)
Uploaded on Saturday 25 Feb 2012
Major pathways and origins of invasive species infestations in the marine environment
Hugo Ahlenius, UNEP/GRID-Arendal
All across the planet, the number and severity of outbreaks and infestations of invasive species (i.e. species purposefully or accidentally introduced in non-native environments) is growing, and invasions of marine habitats are now occurring at an alarming rate. Exotic and invasive species have been identified by scientists and policymakers as a major threat to marine ecosystems, with dramatic effects on biodiversity, biological productivity, habitat structure and fisheries. This graphic presents the major pathways and origins of invasive or exotic species infestations in the marine environment. These
patterns are strikingly concurrent with major shipping routes.