A study on recreational boating in Atlantic Canada as a potential vector for the introduction and spread of non-native biofouling species

No abstracts are to be cited without prior reference to the author.

Information on the role of recreational boating in the introduction and spread of non-native biofouling species was a critical knowledge gap identified during a recent Canadian national risk assessment on ship-mediated introductions of non-native species. To provide information on this vector, a study was conducted by Fisheries and Oceans Canada (DFO) in Atlantic coastal waters to provide information on recreational boat usage, maintenance and movement. In addition to surveys of boaters, selected high risk harbours were surveyed using a combination of underwater video, SCUBA divers and settling plates to determine the biofouling and presence of non-native species on manmade structures and boat hulls. This information is then augmented by the (DFO) biofouling monitoring program data in Atlantic Canada to provide a broader view of the introduction and spread of invasive biofouling organisms in the region over time. Information obtained from this study will be used to determine best practices for recreational boat management and to aid in the prevention of the spread of biofouling non-native species on man-made harbour infrastructures by recreational boating vessels.