A mesocosm study with oil in ice was performed in Van Mijenfjorden in Svalbard to compare effects of the oil spill responses (OSR) in situ burning, chemical dispersion and natural attenuation on the physiological performance of the Arctic copepod Calanus glacialis. Seawater collected from the mesocosms in winter and spring was used in laboratory incubation experiments, where effects on fecal pellet production, egg production and hatching success were investigated over a period of 14 days. Polycyclic aromatic hydrocarbon (PAH) seawater concentrations were lowest in winter. Brine channel formation in spring resulted in an 18 times increase in PAH concentration in the chemical dispersion treatment (1.67 μg L⁻¹), and a 3 fold increase in the natural attenuation (0.36 μg L⁻¹) and in situ burning (0.04 μg L⁻¹) treatments. The physiological performance of female C. glacialis was unaffected by the PAH seawater concentrations. However, a higher mortality and deformity of nauplii was observed in the chemical dispersion treatment, highlighting the importance of considering secondary effects on next generation in future environmental risk assessment of OSR. This study shows that during the ice-covered period, chemical dispersion of oil spills leads to higher PAH exposure than natural attenuation and in situ burning, with potential consequences for recruitment of Arctic copepods.

在斯瓦尔巴特群岛的Van Mijenfjorden进行了冰中油的介观研究，比较了溢油反应（OSR）原位燃烧，化学分散和自然衰减对北极co足类Calanus glacialis生理性能的影响。冬季和春季从中层空间收集的海水用于实验室孵化实验，其中在14天的时间内研究了对粪便颗粒生产，产蛋量和孵化成功的影响。冬天的多环芳烃（PAH）海水浓度最低。春季形成的卤水通道使化学分散处理中的PAH浓度增加了18倍（1.67μgL ^-1），自然衰减（0.36μgL ^-1）和原位燃烧（0.04μgL ^-1）处理增加了3倍。雌性C. glacialis的生理性能不受PAH海水浓度的影响。然而，在化学分散处理中观察到无节幼体的更高死亡率和畸形，突出了在未来的OSR环境风险评估中考虑对下一代的次要影响的重要性。这项研究表明，在冰雪覆盖的时期，溢油的化学扩散比自然衰减和原位燃烧导致的PAH暴露量更高，这对北极pe足类动物的募集具有潜在的影响。