This article presents a description of the background material, and analyses used by UNEP-GIWA for the assessment of the Russian seas. It gives an overview of the development of fisheries over the last 100 years in the 2 Russian seas, the Barents and the Azov Sea. The major stages of fisheries development in the Barents and in the Azov Seas and the main reasons for their decreasing productivity are discussed. These 2 seas, with very different physical and geographical characteristics, both show similar trends in fish-catch dynamics. The natural fluctuations of marine ecosystems and anthropogenic interference with natural ecosystems functions have led to significant negative impact on ecosystem health and have resulted in a negative change in both the structure and the amounts of catches. The decreasing fish catch in the Russian seas has become a concern for the Russian Federation, and revised policies for the management of the Russian fisheries have been introduced. This policy document Concept of the Fishery Development in the Russian Federation for the Period up to the Year 2020 is presented and discussed.
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J Helminthol
January 2025
Center of Parasitology of A.N. Severtsov Institute of Ecology and Evolution of the Russian Academy of Sciences, Leninskii Prospect 33, 117071, Moscow, Russia.
Studying complexes of cryptic or pseudocryptic species opens new horizons for the understanding of speciation processes, an important yet vague issue for the digeneans. We investigated a hemiuroidean trematode across a wide geographic range including the northern European seas (White, Barents, and Pechora), East Siberian Sea, and the Pacific Northwest (Sea of Okhotsk and Sea of Japan). The goals were to explore the genetic diversity within through mitochondrial ( and genes) and ribosomal (ITS1, ITS2, 28S rDNA) marker sequences, to study morphometry of maritae, and to revise the life cycle data.
View Article and Find Full Text PDFLuminescence
January 2025
A.O. Kovalevsky Institute of Biology of the Southern Seas, Sevastopol, Russian Federation.
Bioluminescence is a functional property used by many marine organisms for multilateral communications. In the Arabian Sea, the dinoflagellate Noctiluca scintillans (Macartney) Kofoid and Swezy, 1921, contributes gradually to the bioluminescent potential (BP) of the phytoplankton community. Experiments, field sampling, and remote sensing were employed, to estimate the seasonal variation of the BP and the abundance of cells in the northwestern Arabian Sea.
View Article and Find Full Text PDFMar Drugs
November 2024
School of Medicine and Life Sciences, Far Eastern Federal University, 690922 Vladivostok, Russia.
Glycosylation is a ubiquitous and the most structurally diverse post-translational modification of proteins. High levels of phenotypic heterogeneity in brain tumors affect the biosynthetic pathway of glycosylation machinery, resulting in aberrant glycosylation patterns. Traditionally, unique glycocode readers, carbohydrate-binding proteins, have been used to identify differentially expressed carbohydrate determinants associated with the tumor cell surface.
View Article and Find Full Text PDFJ Acoust Soc Am
December 2024
Department of Geology and Geochemistry of Fossil Fuels, Faculty of Geology, Moscow State University, Moscow 119991, Russia.
This research quantifies the gas release rate from a natural shallow methane seep site in the Laspi Bay (Black Sea), whose origin is thermocatalytic. An adaptive single bubble identification technique was applied to analyze gas volume and release rates from passive acoustic data. Gas from the seafloor was emitted by single bubbles that occurred in clusters.
View Article and Find Full Text PDFSud Med Ekspert
December 2024
Bureau of Forensic Medical Examination, Petrozavodsk, Russia.
Objective: To establish the relevance of examining the internal organs for the presence of diatom plankton after drowning in the waters of the White Sea.
Material And Methods: We studied the biological material (fragments of lungs and kidneys) from the corpses of people found in the waters of the Kemskaya Bay and Onega Bay of the White Sea and waters from different areas of the White Sea for the presence of diatoms.
Results: In all cases of drowning in the waters of the White Sea (in the area of the city of Belomorsk and the Kem skerries), marine and freshwater diatoms were found in the lungs and kidneys of the deceased in quantities sufficient to diagnose death from drowning in water.
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