Accordingly, multiannual management plans include a number of management measures (e.g. spatio-temporal restrictions, effort and catch limitations, technical measures) and adaptive mechanisms to be implemented in order achieve objectives within a desired timeframe and maintain them (Table 29). It is important that management plans be drafted at least within a precautionary context and be adaptable to changing and evolving stocks, fisheries and environments. In the context of the GFCM, management plans are based on extensive technical work, such as the compilation of available scientific evidence useful for scientific advice, the identification of the management plan scope and objectives, and consultation with experts and national representatives on potential management measures to be established for particular fisheries.