wca environment Ltd, Brunel House, Volunteer Way, Faringdon, Oxfordshire, UK,
Environ Sci Pollut Res Int. 2014 Jan;21(1):193-204. doi: 10.1007/s11356-013-1851-2. Epub 2013 Jun 9.
A field-based evaluation of the biological effects of potential nickel (Ni) exposures was conducted using monitoring data for benthic macroinvertebrates and water chemistry parameters for streams in England and Wales. Observed benthic community metrics were compared to expected community metrics under reference conditions using RIVPACS III+ software. In order to evaluate relationships between Ni concentrations and benthic community metrics, bioavailable Ni concentrations were also calculated for each site. A limiting effect from Ni on the 90th percentile of the maximum achievable ecological quality was derived at "bioavailable Ni" exposures of 10.3 μg l(-1). As snails have been identified as particularly sensitive to nickel exposure, snail abundance in the field in response to nickel exposure, relative to reference conditions, was also analysed. A "low effects" threshold for snail abundance based on an average of spring and autumn data was derived as 3.9 μg l(-1) bioavailable Ni. There was no apparent effect of Ni exposure on the abundance of Ephemeroptera (mayflies), Plecoptera (stoneflies) or Tricoptera (caddisflies) when expressed relative to a reference condition within the range of "bioavailable Ni" exposures observed within the dataset. Nickel exposure concentrations co-vary with the concentrations of other stressors in the dataset, and high concentrations of Ni are also associated with elevated concentrations of other contaminants.
采用监测数据对英格兰和威尔士溪流的底栖大型无脊椎动物和水质参数进行了现场评估，以研究潜在镍（Ni）暴露的生物效应。使用 RIVPACS III+软件将观察到的底栖群落指标与参照条件下的预期群落指标进行了比较。为了评估 Ni 浓度与底栖群落指标之间的关系，还为每个地点计算了生物可利用的 Ni 浓度。在“生物可利用的 Ni”暴露浓度为 10.3μg l-1的情况下，Ni 对最大可实现生态质量的第 90 个百分位的限制效应被推导出来。由于已确定蜗牛对镍暴露特别敏感，因此还分析了现场中蜗牛的丰度对镍暴露的反应，相对于参照条件。根据春季和秋季数据的平均值，基于生物可利用的 Ni 浓度推导了蜗牛丰度的“低效应”阈值为 3.9μg l-1。当用数据集内观察到的“生物可利用的 Ni”暴露范围内的参照条件来表示时，Ni 暴露对蜉蝣目（蜉蝣）、蜻蜓目（石蝇）或毛翅目（石蛾）的丰度没有明显影响。Ni 暴露浓度与数据集中其他胁迫物的浓度共变，并且高浓度的 Ni 也与其他污染物浓度的升高有关。
