基于物种敏感度分布推导的海洋溶解态铜的无效应浓度的中观模型验证。
Mesocosm validation of the marine No Effect Concentration of dissolved copper derived from a species sensitivity distribution.
机构信息
IMARES Wageningen UR, PO Box 57, 1780 AB Den Helder, The Netherlands.
IMARES Wageningen UR, PO Box 57, 1780 AB Den Helder, The Netherlands.
出版信息
Sci Total Environ. 2015 Jul 15;521-522:173-82. doi: 10.1016/j.scitotenv.2015.03.086. Epub 2015 Mar 30.
The Predicted No Effect Concentration (PNEC) for dissolved copper based on the species sensitivity distribution (SSD) of 24 marine single species tests was validated in marine mesocosms. To achieve this, the impact of actively maintained concentrations of dissolved copper on a marine benthic and planktonic community was studied in 18 outdoor 4.6m(3) mesocosms. Five treatment levels, ranging from 2.9 to 31μg dissolved Cu/L, were created in triplicate and maintained for 82days. Clear effects were observed on gastropod and bivalve molluscs, phytoplankton, zooplankton, sponges and sessile algae. The most sensitive biological endpoints; reproduction success of the bivalve Cerastoderma edule, copepod population development and periphyton growth were significantly affected at concentrations of 9.9μg Cu/L and higher. The No Observed Effect Concentration (NOEC) derived from this study was 5.7μg dissolved Cu/L. Taking into account the DOC concentration of the mesocosm water this NOEC is comparable to the PNEC derived from the SSD.
基于 24 种海洋单物种试验的物种敏感性分布（SSD），对溶解态铜的预测无效应浓度（PNEC）进行了海洋中观生态系统验证。为了实现这一目标，在 18 个户外 4.6m3 的中观生态系统中，研究了主动维持的溶解态铜浓度对海洋底栖和浮游生物群落的影响。设置了 5 个处理水平，范围从 2.9 到 31μg 溶解 Cu/L，重复 3 次，并维持 82 天。在腹足纲和双壳类软体动物、浮游植物、浮游动物、海绵和固着藻类上观察到明显的影响。最敏感的生物终点，即双壳类贻贝 Cerastoderma edule 的繁殖成功率、桡足类种群发育和周丛生物生长，在 9.9μg Cu/L 及更高浓度下受到显著影响。本研究得出的无观察效应浓度（NOEC）为 5.7μg 溶解 Cu/L。考虑到中观生态系统水的 DOC 浓度，该 NOEC 与 SSD 得出的 PNEC 相当。
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