To estimate abundance of a spawning stock, e.g. in the Barents Sea (Haug and Nakken, 1977).Ģ. To establish indices of 0-group fish, e.g. To illustrate this, the following examples from published work are given:ġ. The individual surveys may be carried out with widely varying objectives depending on their location, timing, the nature of the resource, and also on the specific questions asked. In these contexts, the working objectives of acoustic surveys may be diverse, although in essence they are focussed on fish distribution and abundance. Also, the monitoring of fish stocks and their scientific management have become increasingly important in recent years. Therefore, the working objectives of the survey must be consistent with the information needed to make wise investment decisions". "The ultimate aim of most resource surveys is to provide facts and information to potential investors who are interested in developing a new fishery or extending an existing fishery, Mackett (1973). Two further ingredients are required: (1) a learned profession requires years of preparation of the whole man and of his knowledge and skills (2) it also requires the learning approach throughout life, as a means of fulfilling one's responsibility to one's fellow men, through the ready application of new knowledge." 8.2 Planning and Design of SurveysĨ.2.1 Objectives and Background Information #TOTAL RECORDER 8.4 PRO FREE#"A profession is man-centred in two ways: (1) it demands practitioners who are free and responsible individuals and who, through their personal integrity, dedication, and courage, can be depended upon to establish and maintain their personal standards of performance (2) a profession, no matter how technical the procedures it employs, demands that its practitioners be primarily motivated by service to their fellow men.Ī learned profession is a still more demanding occupation. #TOTAL RECORDER 8.4 PRO PROFESSIONAL#In this connection Scientists and Engineers consider themselves to be professional in a very broad sense, as shown by the following quotation from Brown (1962). #TOTAL RECORDER 8.4 PRO FULL#Members of the team must ensure continuity of survey records, with strict regard to their annotation including a full description of unusual occurrences.Įxperience in FAO Projects has shown that the biologist can profit from the skills of the engineer, and the engineer needs the knowledge supplied by the fishery biologist. Each person shares the general watchkeeping duties, but must be ready to apply his individual skills at any time for the benefit of the team as a whole. Fisheries acoustic surveys are usually carried out by a team of biologists, oceanographers, electronics engineers, fisheries engineers and fishing gear technologists, ie essentially a group of scientists and engineers. Such surveys may be carried out at different levels of complexity and their objectives may range from a purely academic nature to the fishery resources surveys dealt with in this manual.Ĭommon to the whole range of surveys is their multi-disciplinary nature, a fact that necessitates cooperation and collaboration between personnel from different disciplines. Effective team work is important for the successful conduct of acoustic surveys.
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