Available online: https://pub.norden.org/temanord2023-551/ The overall aim of this report is to provide an overview of the most relevant environmental effects and potential impacts on the marine environment related to seaweed cultivation in the Faroe Islands. The identified environmental impacts were evaluated for their relevance and significance for cultivation in the Faroe Islands. The report includes a number of potential effects and impacts that have been identified and addressed according to their expected significance. From this scoping of potential environmental impacts from seaweed cultivation in the Faroe Islands, a baseline programme is suggested. Such a baseline programme, and a consecutive monitoring program, is needed to safeguard a future sustainable and resilient macroalgal cultivation in Faroese fjords. The suggested baseline programme is a first step in this direction.
Available online: https://pub.norden.org/temanord2022-558/ A growing number of low sulphur fuel oils (LSFOs) are being marketed as a result of new international rules to reduce the sulphur content of ship fuels. This project aims to strengthen the knowledge base on environmental fate and behaviour of LSFO spills in cold seawater. The project includes laboratory experiments to investigate the effectiveness of combating LSFO spills by in-situ burning and chemical dispersion, and the potential for biodegradation. The results indicated that the LSFOs tested had a limited potential of natural and chemical dispersion, were ignitable and that between 20-50% were biodegraded in cold seawater. Overall, the results indicate that the tested LSFOs likely have a high degree of persistence on the sea surface and shoreline even when chemical dispersion or in-situ burning is attempted.
Shipping activities across the Artic are expected to increase with decreasing sea ice cover, thus increasing the risk of oil spills. Heavy Fuel Oil (HFO, a mixture of residual fuel and distillate diluent) is often used as fuel in marine vessels as it is relatively cheaper than e.g. lighter marine fuels. Knowledge about fate and behaviour of HFOs is important to select the most efficient countermeasures in an oil spill situation as well as in the risk assessment of possible oil spills in cold waters. The aim of this review is to collate and strengthen the knowledge base on HFO in cold seawater, its fate and behaviour, including weathering, biodegradation, environmental implications of HFO spills and HFO spill response including environmental considerations regarding use the of chemical dispersants and in situ burning. Knowledge gaps and research needs are identified and described.
Shipping activities across the Artic are expected to increase with decreasing sea ice cover, thus increasing the risk of oil spills. Heavy Fuel Oil (HFO, a mixture of residual fuel and distillate diluent) is often used as fuel in marine vessels as it is relatively cheaper than e.g. lighter marine fuels. Knowledge about fate and behaviour of HFOs is important to select the most efficient countermeasures in an oil spill situation as well as in the risk assessment of possible oil spills in cold waters. The aim of this review is to collate and strengthen the knowledge base on HFO in cold seawater, its fate and behaviour, including weathering, biodegradation, environmental implications of HFO spills and HFO spill response including environmental considerations regarding use the of chemical dispersants and in situ burning. Knowledge gaps and research needs are identified and described.
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