Sea Urchin Embryogenesis as Bioindicators of Marine Pollution in Impact Areas of the Sea of Japan/East Sea and the Sea of Okhotsk

2017 ◽  
Vol 73 (2) ◽  
pp. 322-333 ◽  
Author(s):  
Olga N. Lukyanova ◽  
Elena V. Zhuravel ◽  
Denis N. Chulchekov ◽  
Andrey A. Mazur
Keyword(s):  
Sea Urchin ◽  
Sea Of Japan ◽  
Sea Of Okhotsk ◽  
Marine Pollution ◽  
East Sea ◽  
The Sea Of Japan ◽  
The Sea Of Okhotsk

Volcanogenic complexes of the Sea of Okhotsk and the Sea of Japan (Comparative analysis)

Oceanology ◽  
2007 ◽  
Vol 47 (2) ◽  
pp. 273-281 ◽  
Author(s):  
E. P. Lelikov ◽  
T. A. Emel’yanova
Keyword(s):  
Comparative Analysis ◽  
Sea Of Japan ◽  
Sea Of Okhotsk ◽  
The Sea Of Japan ◽  
The Sea Of Okhotsk

scholarly journals Trace element composition of the Southwestern Sakhalin Chum Salmon

2021 ◽  
Vol 937 (2) ◽  
pp. 022074
Author(s):  
A Litvinenko ◽  
N Khristoforova ◽  
V Tsygankov ◽  
M Kovalchuk
Keyword(s):  
Sea Of Japan ◽  
Sea Of Okhotsk ◽  
Chum Salmon ◽  
Trace Element Composition ◽  
Oncorhynchus Keta ◽  
The Sea Of Japan ◽  
The Sea Of Okhotsk ◽  
Lead And Cadmium ◽  
The Difference ◽  
The Impact

Abstract The study is devoted to the microelement composition of organs and tissues of chum salmon (Oncorhynchus keta), which came for spawning in September 2018 in the r. Lovetskaya on the southwestern coast of Sakhalin. Samples of organs and tissues of fish, prepared in Sakhalin, were frozen and delivered to Vladivostok for chemical analysis. Trace elements were determined from acid mineralizates by atomic absorption on a Shimadzu AA 6800. It was found that the content of microelements indicating anthropogenic impact on the environment (Zn, Cu and Ni) in the Sea of Japan chum was significantly higher than the content of those in the Okhotsk Sea fish. So, for example, the amount of zinc in the muscles of the Sea of Japan chum salmon was 2.5 times higher than in those of the Sea of Okhotsk fish. In the liver, the effect was even greater - the difference between the content of this element in the Sea of Japan and the Sea of Okhotsk reached 19 times. At the same time, in the organs and tissues of the Okhotsk chum salmon, which crossed the impact geochemical zone in the Kuril-Kamchatka region at least twice during its life cycle, the content of lead and cadmium, witnesses of underwater and surface volcanism in the Kuril straits, prevailed. The content of lead in the muscles of chum salmon from r. Raidovaya was 4 times more than in the muscles of chum salmon from the river. Lovetskaya; in the liver, the difference was 5 times.

Atmospheric mercury (Hg(0)) concentrations and Hg(0) fluxes in the Sea of Japan and the Okhotsk Sea in fall 2019

2020 ◽  
Author(s):  
Evgeny Lopatnikov ◽  
Viktor Kalinchuk ◽  
Anatoly Astakhov ◽  
Yang Gang ◽  
Jianjun Zou
Keyword(s):  
Sea Of Japan ◽  
Yellow Sea ◽  
Sea Of Okhotsk ◽  
The Yellow Sea ◽  
The Sea Of Japan ◽  
Air Masses ◽  
The Sea Of Okhotsk ◽  
Kurile Islands ◽  
The Pacific ◽  
The Pacific Ocean

<p>Continuous measurements of gaseous elemental mercury (Hg(0)) in the marine boundary layer (MBL) and Hg(0) fluxes were conducted in the Sea of Japan and the Sea of Okhotsk from September 7 to October 17, 2019. All Hg(0) measurements were carried out using two RA-915M mercury analysers (Lumex LLC, Russia). Hg(0) concentrations in the air were measured at two levels (about 2 m and 20 m above the sea surface) with a time resolution of 30 minutes. Hg(0) fluxes were measured at five sample stations using a dynamic flux chamber.</p><p>During the cruise Hg(0) concentrations varied in the range from 0,47 ng/m<sup>3</sup> to 1,55 ng/m<sup>3</sup>, and from 0,31 ng/m<sup>3</sup> to 2,71 ng/m<sup>3</sup> with medians of 0,92 ng/m<sup>3</sup> for 2 m and 20 m, respectively. Atmospheric Hg(0) concentrations in measurements sites were strongly depended on the regions from where air masses came to the study areas. As a result of the Concentration Weighted Trajectory (CWT) analysis we established 2 regions that influenced the Hg(0) concentrations during the cruise: the Northeast China with the Yellow Sea region and the Kurile Islands sector of the Pacific Ocean. The arrival of air masses from China and the Yellow Sea region caused an increase in Hg(0) concentrations in the air in the Sea of Japan and the Sea of Okhotsk. Elevated concentrations were also observed In the Sea of Okhotsk during the periods air masses came from the Kurile Islands sector of the Pacific Ocean.</p><p>Hg(0) fluxes were measured at 3 stations in the Sea of Japan and at 2 stations in the Sea of Okhotsk. The values ranged from 0,57 ng/m<sup>2</sup>/h to 1,55 ng/m<sup>2</sup>/h, with median value of 1,32 ng/m<sup>2</sup>/h. A positive relationships between Hg(0) flux and air and water temperature were observed.</p><p>This work was supported by the Russian Science Foundation (RSF) (Project № 19-77-10011) and by the National Natural Science Foundation of China (Projects №: 41876065, 41420104005, U1606401) and National Program on Global Change and Air-Sea Interaction (Project № GASI-GEOGE-04).</p>

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