This paper analyzes data on the concentration and dynamics of 137Cs and 90Sr in marine organisms on the Arctic shelf under modern conditions (2013–2018). It is shown that the radiation pollution of the Arctic sea biota is low and poses no danger to humans. The dynamics of radionuclide pollution of macrophyte and fish suggests that self-purification of the biotic component of the ecosystem occurred in several stages determined by a change in the generations in the hydrobiont populations. Fish are most sensitive to radiation pollution and the most studied component of marine biota. In the study of modern radioactive contamination of the Arctic seas, attention should be focused on local waters, where an increase in isotope concentrations could be possible owing to the episodic leakage of radioactive materials.

中文翻译：

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北极大陆架生物群中人工放射性同位素的当前水平（2013-2018）

本文分析了现代条件下北极大陆架海洋生物中 137Cs 和 90Sr 的浓度和动态数据（2013-2018 年）。结果表明，北极海域生物群的辐射污染较低，对人类没有危害。大型植物和鱼类的放射性核素污染动态表明，生态系统生物成分的自我净化发生在由水生生物种群世代变化决定的几个阶段。鱼类对辐射污染最敏感，也是海洋生物群中研究最多的成分。在研究北极海域的现代放射性污染时，应将注意力集中在当地水域，因为放射性物质的偶发泄漏可能会导致同位素浓度增加。