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Long-term biodegradation of crude oil in high-arctic backshore sediments: The Baffin Island Oil Spill (BIOS) after nearly four decades.
Schreiber, Lars; Hunnie, Blake; Altshuler, Ianina; Góngora, Esteban; Ellis, Madison; Maynard, Christine; Tremblay, Julien; Wasserscheid, Jessica; Fortin, Nathalie; Lee, Kenneth; Stern, Gary; Greer, Charles W.
Afiliación
  • Schreiber L; Energy, Mining and Environment Research Centre, National Research Council Canada, Montreal, Quebec, Canada. Electronic address: lars.schreiber@nrc-cnrc.gc.ca.
  • Hunnie B; Centre for Earth Observation Science, University of Manitoba, Winnipeg, Manitoba, Canada.
  • Altshuler I; Department of Natural Resource Sciences, McGill University, Montreal, Quebec, Canada.
  • Góngora E; Department of Natural Resource Sciences, McGill University, Montreal, Quebec, Canada.
  • Ellis M; Department of Natural Resource Sciences, McGill University, Montreal, Quebec, Canada.
  • Maynard C; Energy, Mining and Environment Research Centre, National Research Council Canada, Montreal, Quebec, Canada.
  • Tremblay J; Energy, Mining and Environment Research Centre, National Research Council Canada, Montreal, Quebec, Canada.
  • Wasserscheid J; Energy, Mining and Environment Research Centre, National Research Council Canada, Montreal, Quebec, Canada.
  • Fortin N; Energy, Mining and Environment Research Centre, National Research Council Canada, Montreal, Quebec, Canada.
  • Lee K; Fisheries and Oceans Canada, Ecosystem Science, Ottawa, Ontario, Canada.
  • Stern G; Centre for Earth Observation Science, University of Manitoba, Winnipeg, Manitoba, Canada.
  • Greer CW; Energy, Mining and Environment Research Centre, National Research Council Canada, Montreal, Quebec, Canada; Department of Natural Resource Sciences, McGill University, Montreal, Quebec, Canada.
Environ Res ; 233: 116421, 2023 09 15.
Article en En | MEDLINE | ID: mdl-37327845
With an on-going disproportional warming of the Arctic Ocean and the reduction of the sea ice cover, the risk of an accidental oil spill from ships or future oil exploration is increasing. It is hence important to know how crude oil weathers in this environment and what factors affect oil biodegradation in the Arctic. However, this topic is currently poorly studied. In the 1980s, the Baffin Island Oil Spill (BIOS) project carried out a series of simulated oil spills in the backshore zone of beaches located on Baffin Island in the Canadian High Arctic. In this study two BIOS sites were re-visited, offering the unique opportunity to study the long-term weathering of crude oil under Arctic conditions. Here we show that residual oil remains present at these sites even after almost four decades since the original oiling. Oil at both BIOS sites appears to have attenuated very slowly with estimated loss rates of 1.8-2.7% per year. The presence of residual oil continues to significantly affect sediment microbial communities at the sites as manifested by a significantly decreased diversity, differences in the abundance of microorganisms and an enrichment of putative oil-degrading bacteria in oiled sediments. Reconstructed genomes of putative oil degraders suggest that only a subset is specifically adapted for growth under psychrothermic conditions, further reducing the time for biodegradation during the already short Arctic summers. Altogether, this study shows that crude oil spilled in the Arctic can persist and significantly affect the Arctic ecosystem for a long time, in the order of several decades.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Petróleo / Contaminación por Petróleo País/Región como asunto: America do norte Idioma: En Revista: Environ Res Año: 2023 Tipo del documento: Article Pais de publicación: Países Bajos
Texto completo
Añadir a Mi BVS
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Petróleo / Contaminación por Petróleo País/Región como asunto: America do norte Idioma: En Revista: Environ Res Año: 2023 Tipo del documento: Article Pais de publicación: Países Bajos