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Kim S.T.,Sakhalin Scientific Research Institute of Fisheries and Oceanography SakhNIRO
ICES Journal of Marine Science | Year: 2012

This article provides a brief review of climatic, oceanographic, and biological changes in the Sea of Okhotsk in recent decades. The Sea of Okhotsk is distinguished by its high biological productivity and its significant impact on the Pacific Ocean through water exchanges. Long-term temperature data have shown periodic cooling and warming of the Sea that in turn have resulted in changes to its biological communities. In the 1980s, a generally warm period, the Sea of Okhotsk had abundant fish, primarily large stocks of gadoids, especially walleye pollock. The second half of the 1990s was a transitional period when the marine ecosystem was being restructured. In particular, by the mid-1990s, the total biomass of fish in the Sea of Okhotsk had decreased significantly. In the early 2000s, the situation reached a critical level, but by the end of that decade, there was a renewed warming and an increase in the abundance of walleye pollock. © 2012 International Council for the Exploration of the Sea. Published by Oxford University Press. All rights reserved.


A review of Melita group (fam. Melitidae) from the shelf of Sakhalin Island based on literature and own data is provided. Based on new material, four new species of the genus Megamoera are described: M. similidentata sp. nov. and M. striata sp. nov. from north-east shelf of Sakhalin Island; M. falsomikulitschae sp. nov. and M. aequidentatum sp. nov. from Aniva Bay (southern Sakhalin). The new genus Armatomelita gen. nov. and new species A. tshayensis sp. nov. are described from Aniva Bay (southern Sakhalin). A key to the world species of the genus Megamoera is provided. Cladistic analysis of morphological relationships within the genus Megamoera is implemented. Copyright © 2013 Magnolia Press.


Based on new material, three new species of the genus Quasimelita are described: Q. tolyza sp. nov., Q. jarettii sp. nov. and Q. serraticoxae sp. nov. from northern shelf of Sakhalin Island and contiguous area. The new species of the genus Melitoides, M. kawaii sp. nov. is described from north-east shelf of Sakhalin Island. Keys to the world species of genera Quasimelita and Melitoides are provided. Cladistic analysis of morphological relationships within genera Quasimelita and Melitoides are implemented. Copyright © 2014 Magnolia Press.

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