Department of Ecology, Environment and Plant Sciences, Stockholm, Stockholm University, Sweden.
Norwegian Radiation and Nuclear Safety Authority, Oslo, Norway.
Environ Toxicol Chem. 2021 Jun;40(6):1694-1705. doi: 10.1002/etc.5023. Epub 2021 May 6.
The Baltic Sea is one of the most polluted seas in the world, with widespread eutrophication and radionuclide contamination. Using key species of the Baltic Sea, the effects of eutrophication on uptake and trophic transfer of the radioactive micronutrients commonly found in nuclear power plant effluents were investigated experimentally using the brown macroalgae Fucus vesiculosus and the grazers Idotea balthica and Theodoxus fluviatilis in a controlled environment. Rapid uptake of Mn, Co, and Zn from water was observed in all biota; and eutrophication combined with grazing pressure strongly influenced the uptake in F. vesiculosus. Uptake of Mn, Co, and Zn to I. balthica and T. fluviatilis grazing on F. vesiculosus were also observed. The results indicate that ecosystems could be open for further trophic transfer as radionuclides accumulate quickly in the producers and are transferred to primary consumers. Environ Toxicol Chem 2021;40:1694-1705. © 2021 The Authors. Environmental Toxicology and Chemistry published by Wiley Periodicals LLC on behalf of SETAC.
波罗的海是世界上污染最严重的海域之一，存在广泛的富营养化和放射性核素污染。本研究使用波罗的海的关键物种，采用受控环境下的褐藻泡叶藻、食草动物冰岛帽贝和淡水黄道蟹，实验研究了富营养化对从水中摄取和营养转移常见于核电站废水中的放射性微量元素的影响。在所有生物群中都观察到 Mn、Co 和 Zn 从水中的快速摄取；富营养化加上放牧压力强烈影响了泡叶藻中的摄取。在食草动物冰岛帽贝和淡水黄道蟹以泡叶藻为食时，也观察到对 Mn、Co 和 Zn 的摄取。研究结果表明，由于放射性核素在生产者中迅速积累并转移到初级消费者，生态系统可能会进一步开放进行营养转移。 2021；40:1694-1705。 © 2021 作者。环境毒理化学由 Wiley Periodicals LLC 代表 SETAC 出版。
