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Ecotoxicological benthic impacts of experimental oil-contaminated marine snow deposition

Author:
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.
Source:
Marine pollution bulletin 2019 v.141 pp. 164-175
ISSN:
0025-326X
Subject:
Amphipoda, Copepoda, Gastropoda, benthic ecosystems, clay, dose response, ecotoxicology, fauna, food webs, invertebrates, kaolin, marine sediments, oil spills, oils, polycyclic aromatic hydrocarbons, water pollution
Abstract:
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.
Agid:
6343375