Assessing Monitored Natural Recovery (MNR) for remediating crude oil spills in freshwater environments: The Freshwater Oil Spill Remediation Study (FOReSt) at the Experimental Lakes Area, Canada

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چکیده

ABSTRACT (#667537) Monitored natural recovery (MNR) was assessed as a non-invasive method for limiting residual oil exposure in the aquatic environment following contained spills of Cold Lake Blend diluted bitumen (CLB) and conventional heavy crude (CHV) at IISD-Experimental Lakes Area Canada. Oils were applied left place 72h to simulate potential spill cleanup response times. After physical removal free surface oil, biological (microbes, zooplankton communities, emergent insects, benthic invertebrate) over 80d polycyclic aromatic compounds (PACs) their alkylated forms (aPACS) water sediment characterized. Embryonic development fathead minnow eggs exposed from each enclosures used determine impacts on fish early life stage development. There significantly different concentrations PACs treated with CHV immediately after application attenuation differed between two products throughout study period. Water primarily 3 ring aPACs. Microbial taxa known degrading capacity increased relative total community abundance. Emergent insect abundance lower both reference enclosures, but not impacted by treatments. could be successfully affected freshwater shorelines, additional data are required long term trajectories.

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ژورنال

عنوان ژورنال: Proceedings

سال: 2021

ISSN: ['0890-1740']

DOI: https://doi.org/10.7901/2169-3358-2021.1.667537