What governs marine fouling assemblages on chemically-active antifouling coatings?

From an environmental perspective, there is a need to reduce the amount of biocides in chemically-active antifouling (AF) coatings, as these can cause severe damage marine life. In this study, six active molecules known booster were added at 3 wt% solvent and aqueous-based acrylic paints. DCOIT, dichlofluanid, zinc pyrithione, copper tralopyril zineb used alone mixed with lower (I) oxide thiocyanate (10 wt%) than currently or fillers. Field immersion tests carried out Atlantic Ocean (Ste Anne du Portzic) Mediterranean Sea (Toulon), contrasting physicochemical properties water macrofoulers' biodiversity. Microscopic analyses showed that AF coatings reduced bacterial density differently for short times Ste Portzic. After four/five months immersion, results, including multidimensional analyses, first specific patterns assemblages depending on site. addition, structure was affected by biocide itself combination binder. When efficient, appeared decrease richness strongest effect Toulon. DCOIT most performing whatever site polymer binder used. found be efficient against bacteria macrofoulers The pyrithione ZnO fillers paints exhibited highest activity over 16 immersion.