[…] You have mentioned global change. How will it affect fisheries?
It is already affecting them and will continue to do so. We are observing how surface waters are getting warmer in most oceans except from some specific cases, such as the surroundings of the Antarctica due to ice caps melting, or some upwelling areas. There, due to the greater difference between land and sea, upwellings can intensify and bring cold water towards the surface. These areas can serve as pockets where cold water species can live. However, in general, surface waters getting warmer is causing the migration of many species to polar areas. This phenomenon can be studied, for instance, by checking the average temperatures of catches, which can indicate how the distribution of species is changing. In the future, these changes will go deeper. While in temperate areas the effects will not be very strong since some species are replaced by others, the impact on tropical areas will be terrible: each species that disappears will have no replacement. […]
Interview with Daniel Pauly, expert in sustainable fishery and professor at the University of British Columbia, by José Luis Sánchez Lizaso. Senior Lecturer at the Department of Marine Sciences and Applied Biology of the University of Alacant (Spain). You can read the original version in Catalan here.