The research project will adopt a bottom up approach, combined with a literature review of historical fisheries studies focusing on the BPNS. Central to the study is a period of field work during which the ecological knowledge from fishermen (LEK) will be collected by interviews. Apart from the interviews, the preparation of the working instruments, the discussion of the results and the verification of the outcome with other data resources will be vital to this project. Firstly, we will collect and synthesize ecological knowledge from fishermen of fish resources and a changing sea environment during the past 50 years. Secondly, the results of this information will undergo a validation/interpretation process based on comparable scientific ecological knowledge (SEK) provided by the members of the Follow-up Committee and by historical data gathered from the current literature. Thirdly, LEK and SEK results will be discussed with the stakeholders (fishermen, officials from the fisheries administration, fishery scientists). Finally, the evolution of fishery activities in the BPNS will be mapped.