Analysis of the occurrence of cetaceans in the Barents Sea and some factors determining their distribution in the autumn-winter period of 2007-2019
https://doi.org/10.36038/2307-3497-2022-188-87-97
Abstract
The aim of the paper is to analyze the species composition, distribution, habitat conditions of cetaceans, as well as their occurrence in relation to the distribution of mass fish species in ice-free areas of the Barents Sea and adjacent waters in October-December.
The material of the study was the data collected by the Polar Branch of VNIRO during the multi-species trawl-acoustic surveys on the account of juveniles and the assessment of bottom fish stocks in the Barents Sea (MS TAS), as well as information from fishing vessels.
Methods of geoprocessing and mapping of the studied parameters, comparative analysis of the obtained data.
Results: Data are presented on the species composition and occurrence of cetaceans, their habitat conditions (water temperature, salinity, depth), distribution of mass fish species in the Barents Sea in October-December 2007–2019. Сetaceans recorded mainly in the western regions of the study area. White-beaked dolphin and northern bottlenose whale predominated in numbers. Cetaceans were observed in a wide range of temperature (from –0.4 to 8.5 °C) and salinity (34–35.2 ‰), with an average depth of 376 m at the encounter points. Determined, that potential food items for baleen whales were capelin, polar cod, herring, norway pout, and for toothed whales — capelin, polar cod, herring, cod, haddock, blue whiting, redfish.
About the Authors
R. N. Klepikovskiy
Polar branch of «VNIRO» (N. M. Knipovich «PINRO»)
Russian Federation
Russian Federation
Roman N. Klepikovskiy
183038
6, Academician Knipovich St.
Murmansk
V. A. Ivshin
Polar branch of «VNIRO» (N. M. Knipovich «PINRO»)
Russian Federation
Russian Federation
Viktor A. Ivshin
183038
6, Academician Knipovich St.
Murmansk
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Review
For citations:
Klepikovskiy R.N., Ivshin V.A. Analysis of the occurrence of cetaceans in the Barents Sea and some factors determining their distribution in the autumn-winter period of 2007-2019. Trudy VNIRO. 2022;188:87-97. (In Russ.) https://doi.org/10.36038/2307-3497-2022-188-87-97
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