Hydrocarbon bioremediation on Arctic shorelines: Historic perspective and roadway to the future. (15th July 2022) - Góngora, Esteban
Abstract: Climate change has become one of the greatest concerns of the past few decades. In particular, global warming is a growing threat to the Canadian high Arctic and other polar regions. By the middle of this century, an increase in the annual mean temperature of 1.8 °C–2.7 °C for the Canadian North is predicted. Rising temperatures lead to a significant decrease of the sea ice area covered in the Northwest Passage. As a consequence, a surge of maritime activity in that region increases the risk of hydrocarbon pollution due to accidental fuel spills. In this review, we focus on bioremediation approaches on Arctic shorelines. We summarize historical experimental spill studies conducted at Svalbard, Baffin Island, and the Kerguelen Archipelago, and review contemporary studies that used modern omics techniques in various environments. We discuss how omics approaches can facilitate our understanding of Arctic shoreline bioremediation and identify promising research areas that should be further explored. We conclude that specific environmental conditions strongly alter bioremediation outcomes in Arctic environments and future studies must therefore focus on correlating these diverse parameters with the efficacy of hydrocarbon biodegradation. Graphical abstract: Image 1 Highlights: Climate change increases Arctic ship traffic and the risk of accidental fuel spills. We review the factors that affect hydrocarbon biodegradation in Arctic shorelines. Biostimulation is a potential hydrocarbon remediation strategy for Arctic beaches. Omics techniques will allow to better understand and improve Arctic bioremediation.