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Grégory Sempo, Laurent Dagorn, Marianne Robert and Jean-Louis Deneubourg Impact of increasing deployment of artificial floating objects on the spatial distribution of social fish species Journal of Applied Ecology 50

Version of Record online: 7 AUG 2013 | DOI: 10.1111/1365-2664.12140

In terms of fisheries management, the total catch volume is directly linked to the total number of floating objects (FOBs) for non-social species, and any limit on the number of sets would then result in a limit on the total catch. For social species (e.g. tuna), however, increasing the number of FOBs does not necessarily lead to an increase in the total catch, which is a non-intuitive result. Indeed, our model shows that, for specific values of the parameters, deploying a greater number of FOBs in the water (all other parameters being constant) does not necessarily help fishermen to catch more tuna, but does increase the level of fishing effort and bycatch.

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