Assessment of the socioeconomic impact of the invasion of Ivorian beaches by Sargassum algae based on an ethnobotanical study

The Sargassum seaweed that washes up on Ivory Coast beaches consists of two species: Sargassum fluitans and Sargassum natans. These strandings pollute the beaches and have a negative impact on the socioeconomic activities of local communities. The overall objective of this study is to assess the impact of sargassum seaweed strandings on the economic activities of local communities, as well as their interest in these activities. To this end, an ethnobotanical and socioeconomic survey was conducted among tourists, anti-pollution associations, and relevant economic operators. The survey interviewed 340 people. 57.92% of economic operators considered that Sargassum seaweed poses a threat to their activities. Fishing is the most affected activity, with more than 50% of annual turnover lost, and no use is made of this seaweed. At the end of this study, the results reveal that Sargassum seaweed disrupts socio-economic activities and is of no interest to local communities.