Suivi des espèces envahissantes marines à Saint-Pierre et Miquelon. Année 2013

This work, conducted in 2013 , is a first monitoring of marine invasive species in Saint-Pierre and Miquelon archipelago. In global changing context on coastal ecosystems , accentuated by direct or indirect effects of human activities, it became essential to implement a survey on marine invasive species on Saint-Pierre and Miquelon shoreline. Fukui traps and tunicates collectors implemented on different stations as well as the timely completion of observational dives , have established the following conclusions : several non native species were detected within the local marine ecosystem. This species , such as Carcinus maenas , Ciona intestinalis , Botryllus schlosseri , Caprella mutica , etc. ... threaten some local marine ecosystems and some local aquaculture activities. It seems to be essential to continue this type of annual monitoring to determine trends of marine invasive populations on the archipelago. Further works in collaboration with Canadian services should also allow the identification of human activities impacts on these populations movements. These reports will finally support a management plan for these introduced impacting organisms to limit and control biopollution impacts on marine environment and economy.