[MARMAM] Marine noise budgets in practice

Nathan Merchant (Cefas) nathan.merchant at cefas.co.uk
Tue Oct 24 04:10:06 PDT 2017


Dear Colleagues,

We are pleased to announce a paper in Conservation Letters on the management of cumulative underwater noise pollution, one of the major anthropogenic pressures on marine mammals. Includes working example with North Sea harbour porpoise. Now available online as an accepted manuscript (fully formatted version to follow):

Merchant, N.D., Faulkner, R.F., Martinez, R. (in press) Marine noise budgets in practice. Conservation Letters. https://doi.org/10.1111/conl.12420

Abstract:
Many countries have made statutory commitments to ensure that underwater noise pollution is at levels which do not harm marine ecosystems. Nevertheless, coordinated action to manage cumulative noise levels is lacking, despite broad recognition of the risks to ecosystem health. We attribute this impasse to a lack of quantitative management targets – or ‘noise budgets’ – which regulatory decision-makers can work towards, and propose a framework of risk-based noise exposure indicators which make such targets possible. These indicators employ novel noise exposure curves to quantify the proportion of a population or habitat exposed, and the associated exposure duration. This methodology facilitates both place-based and ecosystem-based approaches, enabling the integration of noise management into marine spatial planning, risk assessment of population-level consequences, and cumulative effects assessment. Using data from the first international assessment of impulsive noise activity, we apply this approach to herring spawning and harbor porpoise in the North Sea.

Kind regards,

Nathan


Dr Nathan Merchant
Principal Scientist, Noise & Bioacoustics Team
Pakefield Road, Lowestoft, Suffolk, NR33 0HT, UK
Tel: +44(0) 1502 527780 | Mob: +44 (0) 7789 651086
Email: nathan.merchant at cefas.co.uk<mailto:nathan.merchant at cefas.co.uk>
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https://www.cefas.co.uk/services/research-advice-and-consultancy/underwater-noise/
https://www.cefas.co.uk/media/52916/noise-bioacoustics.pdf
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