The objective of multi-annual management strategies is to facilitate the long- and medium-term commitment of managers and to provide a better basis for fishers to plan their activities. The strategies must also be consistent with sustainable development and ensure the sustainability of the stocks. Where required they must also ensure the recovery of stocks from a depleted state. The study will be inter-disciplinary and focus on what elements must be in multi-annual management strategies to make them acceptable from fishers' and other actors' points of view to ensure commitment. The level of commitment is important in that it is fundamental in determining compliance with management regulations. The level of commitment is strongly influenced by social factors such as education as well as the economic constraints under which the fishing unit operates. Case studies will focus on mixed fisheries and the intention is to move away from stock to fishery-based advice. The various sources of uncertainty encountered in the management of fishery systems and their relative importance to the achievement of management objectives will be explicitly considered. In particular, the interactions between the intrinsic properties of natural systems and our ability to monitor, assess and control them will be evaluated. Evaluation will be performed using a simulation framework to evaluate candidate management strategies before implementation and in particular to investigate the interactions between system components and their relative importance to the overall success of the strategies. Strategies will be implemented via scientifically based harvest rules that reduce annual fluctuations in exploitation strategy by setting appropriate technical measures, catch and effort limits and/or targets. Harvest rules will be developed on a case-specific basis by evaluating the biological and economic impacts of candidate rules, including the effect of non-compli...
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