HYDROLOGICAL CONDITIONS AND CATCHES OF BENTHIC FISHES IN SOUTHERN BERING SEA (Gidrologicheskie Usloviya i Ulovy Donnykh Ryb v Yuzhnoi Chasti Barentseva Morya)
The anomaly of water temperature in layer 0-200m along the Kola meridian from 70 degrees 30 minutes N to 72 degrees 30 minutes N, based on mean temperature during 1950-1965, was considered to be the variation index of heat conditions in the Barents Sea. In accordance with the heat conditions of the...
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| Format: | Text |
| Language: | English |
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1970
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| Online Access: | http://www.dtic.mil/docs/citations/AD0705821 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0705821 |
| Summary: | The anomaly of water temperature in layer 0-200m along the Kola meridian from 70 degrees 30 minutes N to 72 degrees 30 minutes N, based on mean temperature during 1950-1965, was considered to be the variation index of heat conditions in the Barents Sea. In accordance with the heat conditions of the sea, the benthic fishes of the western part of the Barents Sea were caught with the aid of trawls during the first half of the years. From July through October, the cod was observed over a large area of feeding grounds where it was caught by the Soviet trawling fleet. In November and December the cod migrated to wintering places. As a result, their habitat shrank and was displaced westward. It is thought that the trawling catches increase with eastern distribution of the cod and decrease with western distribution. Consequently, during the cold years, 1964 and 1965, the trawl catches were smaller than they could be in warmer years. Changes in heat conditions affecting the dates of arrival of cod and the duration of their sojourn diminish the commercial significance of some areas and increase it in others. Trans. of Polyarnyi Nauchno-Issledovatelskii Institut Morskogo Rybnogo Khozyaistva i Okeanografii. Trudy (USSR) n12 p8-12 1968, by M. Slessers. |
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