Frame-based fisheries management

We’ve added frame based fisheries management. At the present moment that is only for F based fishing, but if you need it for other modes of fishing please let us know. This option allows fishing if biomass is greater than a threshold level.

To use this form of management

1. Set the species to be a TAC managed in the functional_group.csv file
2. Set YYY_flag_framebased to 1 for the fishery in the harvest.prm file.
3. Set up the period for which this form of management should apply for the fishery - using the YYY_start_manage and YYY_end_manage parameters (in days of the simulation run).
4. Set the allowed level of fishing for when the fishery is active. To do this set the TAC_XXX parameter for each species in that fishery.
5. To set the biomass level at which fishing is allowed for the fishery set the value for FC_high_thresh_XXX for each species in the fishery. This scalar will be applied to the initial biomass to give the threshold biomass. Above this threshold fishing will be allowed.

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