Monitoring of Caged Bluefin Tuna Reactions to Ship and Offshore Wind Farm Operational Noises
MetadataShow full item record
AuthorsSantaella-Álvarez, E. (Eladio); Cort, J.L. (José Luis); Bou-Cabo, Manuel; de-la-Gándara, F. (Fernando); Moszynski, Marek; Ordoñez-Cebrián, Patricia; Ramis-Soriano, Jaime; Poveda-Martínez, Pedro; Espinosa, Victor; Pérez-Arjona, Isabel; Soliveres, Ester; Puig-Pons, Vicente
Abstract: Underwater noise has been identified as a relevant pollution affecting marine ecosystems in different ways. Despite the numerous studies performed over the last few decades regarding the adverse effect of underwater noise on marine life, a lack of knowledge and methodological procedures still exists, and results are often tentative or qualitative. A monitoring methodology for the behavioral response of bluefin tuna (Thunnus thynnus) when exposed to ship and wind turbine operational noises was implemented and tested in a fixed commercial tuna feeding cage in the Mediterranean sea. Fish behavior was continuously monitored, combining synchronized echosounder and video recording systems. Automatic information extracted from acoustical echograms was used to describe tuna reaction to noise in terms of average depth and vertical dimensions of the school and the indicators of swimming speed and tilt direction. Video recordings allowed us to detect changes in swimming patterns. Different ...
The following license files are associated with this item: