Aquatic Ecology and Water Quality Management Group, Department of Environmental Sciences, Wageningen University, Wageningen, The Netherlands.
Department of Animal Ecology, Wageningen Environmental Research (Alterra), Wageningen, The Netherlands.
Environ Toxicol Chem. 2019 Apr;38(4):883-895. doi: 10.1002/etc.4366. Epub 2019 Feb 27.
Increasing oil and gas activities may substantially increase chemical stress to benthic ecosystems in the Arctic, and it is necessary to evaluate such environmental risks in these systems. Risk assessment procedures for oil-related compounds (e.g., polycyclic aromatic hydrocarbons [PAHs]) should address differences in exposure between Arctic and temperate benthos. We compare for the first time the bioaccumulation of PAHs by Arctic benthic invertebrate species with that of temperate species, based on their biota-sediment accumulation factors (BSAFs). Measured PAH BSAFs were generally higher in temperate bivalves (Limecola balthica) than in Arctic bivalves (Macoma calcarea), whereas BSAFs in Arctic polychaetes (Nephtys ciliata) were higher than in temperate polychaetes (Alitta virens). Differences in measured BSAFs were explained by species-specific feeding modes and traits. However, modeled BSAFs revealed that steady state was not likely to be reached in the 28-d tests for all PAHs and organisms. Due to the low numbers of individuals, most species-specific parameters were too uncertain to reveal differences between Arctic and temperate species. The results of the present study suggest that data from temperate species could be used as a surrogate for Arctic species in risk assessment. Environ Toxicol Chem 2019;38:883-895. © 2019 The Authors. Environmental Toxicology and Chemistry published by Wiley Periodicals, Inc. on behalf of SETAC.
增加石油和天然气活动可能会大大增加北极海底生态系统的化学压力，有必要评估这些系统中的此类环境风险。与石油相关的化合物（例如多环芳烃[PAHs]）的风险评估程序应考虑北极和温带海底生物之间暴露的差异。我们首次比较了基于生物群-沉积物积累因子（BSAFs）的北极底栖无脊椎动物物种与温带物种对 PAHs 的生物积累。与北极双壳类动物（Macoma calcarea）相比，温带双壳类动物（Limecola balthica）中测量的 PAH BSAFs 通常更高，而北极多毛类动物（Nephtys ciliata）的 BSAFs 则高于温带多毛类动物（Alitta virens）。测量的 BSAFs 的差异可以用物种特有的摄食模式和特征来解释。但是，模型化的 BSAFs 表明，对于所有 PAHs 和生物体，在 28 天的测试中不太可能达到稳定状态。由于个体数量较少，大多数特定于物种的参数太不确定，无法揭示北极和温带物种之间的差异。本研究的结果表明，在风险评估中，可以使用温带物种的数据来替代北极物种。环境毒理化学 2019；38：883-895。 © 2019 作者。环境毒理化学由 Wiley 期刊出版公司代表 SETAC 出版。
