Ecotoxicological benthic impacts of experimental oil-contaminated marine snow deposition
2019
van Eenennaam, Justine S. | Rohal, Melissa | Montagna, Paul A. | Radović, Jagoš R. | Oldenburg, Thomas B.P. | Romero, Isabel C. | Murk, AlberTinka J. | Foekema, Edwin M.
Marine Oil Snow Sedimentation and Flocculent Accumulation (MOSSFA) can pose serious threats to the marine benthic ecosystem as it results in a deposition of oil contaminated marine snow on the sediment surface. In a microcosm experiment we investigated the effects of oil in combination with artificial marine snow or kaolin clay on two benthic invertebrate species and benthic meiofauna. The amphipod showed a dose-dependent decrease in survival for both oil-contaminated clay and oil-contaminated marine snow. The gastropod was only affected by the highest concentration of oil-contaminated marine snow and had internal concentrations of PAHs with a similar distribution as oil-contaminated marine snow. Benthic copepods showed higher survival in presence of marine snow. This study revealed that marine snow on the sediment after oil spills affects organisms in a trait-dependent way and that it can be a vector for introducing oil into the food web.
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