When non-target wildlife species and alien species both affect negatively to an artisanal fishery: the case of trammel net in the Alboran Sea

Abstract In the Northern Alboran Sea, artisanal small-scale fisheries using trammel nets suffer economic losses, and local fishermen see their way-of-life endangered, due to interactions with wildlife species such as alien dolphins. On one hand, seaweed Rugulopteryx okamurae , which was first recorded in Sea 2015, has undergone an intensive expansion sub-region, monopolizing available seabed, causing radical changes underwater seascape clogging nets. other damage caused fishing by dolphin fish predation is ancient problem worldwide, but it intensifying last years. The main objective of this study understand environmental technical conditions that favor damages entails important loss catchability, (i) invasive seaweed, (ii) breaking predation. Through close monitoring port, we obtained direct information 548 sets. Our results indicate approximately 30% sets suffered a unwanted interaction seaweeds As invasion global while dolphin-fishing gear more local, concluded only large-scale management exotic algae, together involvement fishermen, could solve problems activity.