Invited presentation

Regional climate changes and marine biodiversity in the Sea of Japan/East Sea

Andrey V. Adrianov

National Scientific Center of Marine Biology FEB RAS, Far Eastern Federal University, Vladivostok, Russia

Meteorological observations show that the average surface water temperature of the Sea of Japan/East Sea has increased over the past 30 years by more than 1°C; this is the highest value for the indicator over all the seas of the Russian Federation under conditions of pronounced climatic changes on the planet. Among the economic and environmental problems of our region related to these events, we can note changes in the fishing potential of some water areas; a significant growth of biological invasions, including invasions of harmful species (producers of toxins, foulings of hydrotechnical construction, etc.); and the need to strengthen the control and to ensure toxicological safety of marine areas and products of marine origin. Climatic changes lead to an increase in the dynamics of coastal marine ecosystems and marine biological diversity. So, for example, of the 316 fish species recorded in the Peter the Great Bay, 110 species are so-called southern migrants - they visit our waters only in the warm season; about 20% of them were recorded in the water area during the last 20 years. Presently, about 70 invader species have been identified in the Far Eastern seas of Russia, which have already passed the stages of acclimatization and naturalization and have become a part of the local coastal ecosystems. About 60 of these species are found in the area of the Peter the Great Bay, of which 35 invader species have been identified in the Far Eastern Marine Reserve. Among the introduced species found in the bay, 17 are foulings of hydrotechnical structures.






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