They should also establish the research capacity necessary to assess the effects of climate or environment change on fish stocks and aquatic ecosystems. ( Some countries consider that fisheries management can be improved, under the responsibility of the administration, by the active participation of management bodies and by the use of management instruments that enhance fisher’s sense of shared involvement in solutions. For some other countries, co-management frameworks that provide for input from fishers are considered to be valuable by providing improved user right and stewardship over the resource, in addition to being a valuable source of information.