Komov V T, Ivanova E S, Poddubnaya N Y, Gremyachikh V A
Papanin Institute for Biology of Inland Waters, Borok, 152742, Russia.
Cherepovets State University, Lunacharski 5, Cherepovets, 162600, Russia.
Environ Monit Assess. 2017 Mar;189(3):104. doi: 10.1007/s10661-017-5799-4. Epub 2017 Feb 14.
The characteristic properties of uptake and distribution of mercury in terrestrial ecosystems have received much lesser attention compared to aquatic particularly in Russia. Terrestrial ecosystems adjacent to large industrial manufactures-potential sources of mercury inflow into the environment frequently remain unstudied. This is the first report on mercury (Hg) levels in the basic elements of terrestrial ecosystems situated close to a large metallurgical complex.Mean values of mercury concentration (mg Hg/kg dry weight) in the vicinity of city of Cherepovets were the following: 0.056 ± 0.033-in the humus layer of soil; 0.556 ± 0.159-in earthworms; in the organs of voles Myodes glareolus (kidneys-0.021 ± 0.001; liver-0.014 ± 0.003; muscle-0.014 ± 0.001; brain-0.008 ± 0.002); in the organs of shrew Sorex araneus (kidneys-0.191 ± 0.016; liver-0.124 ± 0.011; muscle-0.108 ± 0.009; brain-0.065 ± 0.000). Correlation dependences between Hg content in soil and earthworms (r = 0.85, p < 0.01) as well as soil and all studied shrews' organs (rs = 0.44-0.58; p ≤ 0.01) were found.The results obtained evidence for a strong trophic link in the bioaccumulation of Hg in terrestrial food webs. Despite the vicinity to a large metallurgical complex, mercury content in the studied objects was significantly lower than values of corresponding parameters in the soils and biota from industrial (polluted) areas of Great Britain, the USA, and China.
与水生生态系统相比，陆地生态系统中汞的吸收和分布特性受到的关注要少得多，尤其是在俄罗斯。靠近大型工业制造厂的陆地生态系统——汞流入环境的潜在源头，常常未得到研究。这是关于靠近大型冶金综合体的陆地生态系统基本元素中汞（Hg）含量的首份报告。切列波韦茨市附近汞浓度（毫克汞/千克干重）的平均值如下：土壤腐殖质层中为0.056±0.033；蚯蚓中为0.556±0.159；在田鼠（Myodes glareolus）的器官中（肾脏——0.021±0.001；肝脏——0.014±0.003；肌肉——0.014±0.001；大脑——0.008±0.002）；在鼩鼱（Sorex araneus）的器官中（肾脏——0.191±0.016；肝脏——0.124±0.011；肌肉——0.108±0.009；大脑——0.065±0.000）。发现土壤与蚯蚓中汞含量之间的相关系数（r = 0.85，p < 0.01）以及土壤与所有所研究鼩鼱器官中汞含量之间的相关系数（rs = 0.44 - 0.58；p≤0.01）。所获结果证明陆地食物网中汞生物累积存在很强的营养联系。尽管靠近大型冶金综合体，但所研究对象中的汞含量显著低于英国、美国和中国工业（污染）区土壤和生物群中相应参数的值。
