A multidisciplinary approach for mitigating the risk of harm to marine mammals from sound exposure
Day, A.C. (2022). A multidisciplinary approach for mitigating the risk of harm to marine mammals from sound exposure. Defence Research and Development Canada Scientific Report, DRDC-RDDC-2022-R032. Her Majesty the Queen in Right of Canada, Department of National Defence: Ottawa. 39 pp.
Part of: Defence Research and Development Canada Scientific Report. Defence Research and Development Canada: Ottawa. , more
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| Keywords |
Aquatic organisms > Marine organisms > Aquatic mammals > Marine mammals
Marine/Coastal |
| Author keywords |
agent based modelling; risk modelling; risk; noise exposure |
| Abstract |
This Scientific Report reviews the models that make up existing decision support tools for mitigating the risk of sonar exposure to marine mammals. The models include: a density model to simulate the location of marine mammals, an acoustic model to determine sound propagation, an exposure model to determine the total sound exposure and impact to a simulated mammal, and behaviour models that allow the simulated mammal to move through the sound field. Although the challenges are considerable, understanding theworkflow of the various models and the importance of the data is key. Joining the models into a system or workbench, does progress the work towards a mitigation tool. However, incorporating defined risk assessment measures that address mammal-specific requirements is a critical component.Using aspects of financial risk management, examples of risk measures that may be applicable to quantifying risk of harm to marine mammals due to sound exposure are described. In addition, the complexity of risk and of combining these models into a single tool for marine mammal risk mitigation is highlighted. A deficiency in data and issues associated with real-time data assimilation into many of the models are also indicated. |
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