Seasonal variations in water circulation in the southwestern Barents Sea and their consequences for fish distribution| Seasonal variations in water circulation in the southwestern Barents Sea and their consequences for fish distribution |
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A.V. Rodin This paper is based on the long-term observations of hydrographic, meteorological, ichthyological and fishery data distribution in the Barents Sea.The paper is aimed at paying attention to the processes which were outside the investigations or have not been presented in a proper way. In the first place, meant are the currents appearing in the late winter and directed westward which the papers by scientists from PINRO considered as early as the 1960s (Kislyakov, Penin, Kudlo), but there were neither explanation nor development. In the end of the last century, on the author's initiative, in the Russian State Hydrometeorological University (RGGMU), the mentioned processes were modelled with a positive result and the Norwegian colleagues also got the corroboration through the experiments. The author presented his point of view regarding those processes in his papers of 1989-2005. At present, the new data and arguments for the existence of currents, in spring directed westward in this sea area, have appeared. The main fish species, cod, capelin, herring et al., use the currents in spawning migrations. Situations, behaviour and distribution of capelin, cod and herring are described. Based on these data a catastrophic reduction in capelin stocks in 1986 is explained. The character of herring stock conservation and the recommencement of that species fishery in the early 1990s due to the number of activities by Soviet and Russian fishery science and governing structures are presented. Measures to provide for more efficient management of the stocks are suggested, some forecasts are made and recommendations are given. FISHERY IN NORTH ATLANTIC: REALITY AND PROSPECTS
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