Institute of Parasitology, Slovak Academy of Sciences, 04001, Košice, Slovakia.
Institute of Geotechnics, Slovak Academy of Sciences, Košice, Slovakia.
Bull Environ Contam Toxicol. 2021 Mar;106(3):485-492. doi: 10.1007/s00128-021-03114-w. Epub 2021 Feb 5.
This study aims to evaluate the ecological risk and distribution of heavy metals in sediment, plants and fish in a seriously polluted water reservoir in Krompachy, Slovakia. Special attention was given to the different food web positions of individual fish species (predators, omnivores) and their size. The degree of heavy metal contamination in sediments decreased in the order Cu > Pb > Cr > Hg > Cd, and their mutual proportion was largely consistent with concentrations found in aquatic plants, i.e. water sedges (Carex acutiformis). Of the seven fish species investigated, piscivorous perch (Perca fluviatilis) accumulated higher quantities of metal than fish situated at lower trophic levels. Interestingly, co-equal levels of heavy metals to those found in perch (P. fluviatilis) also occurred in rudd (Scardinius erythrophthalmus). The Hg values in some fish muscles exceeded the maximum permissible limits suggesting a persistent problem of old environmental burden from former mining activities.
本研究旨在评估斯洛伐克克罗姆帕奇（Krompachy）一个重度污染水库中沉积物、植物和鱼类中重金属的生态风险和分布。特别关注了不同鱼类（捕食者、杂食者）在食物网中的位置及其大小。沉积物中重金属污染程度的顺序为 Cu> Pb> Cr> Hg> Cd，其相互比例与水生植物（如水莎草）中的浓度基本一致。在所研究的七种鱼类中，肉食性鲈鱼（Perca fluviatilis）积累的金属量高于处于较低营养级的鱼类。有趣的是，与鲈鱼（P. fluviatilis）中发现的重金属含量相等的水平也出现在鲃属（Scardinius erythrophthalmus）中。一些鱼类肌肉中的汞含量超过了最大允许限度，这表明过去采矿活动造成的旧环境负担仍然是一个持续存在的问题。
