Effects of shipping on marine acoustic habitats in Canadian Arctic estimated via probabilistic modeling and mapping

Last modified: 
December 13, 2019 - 7:40pm
Type: Journal Article
Year of publication: 2017
Date published: 12/2017
Authors: Florian Aulanier, Yvan Simard, Nathalie Roy, Cédric Gervaise, Marion Bandet
Journal title: Marine Pollution Bulletin
Volume: 125
Issue: 1-2
Pages: 115 - 131
ISSN: 0025326X

Canadian Arctic and Subarctic regions experience a rapid decrease of sea ice accompanied with increasing shipping traffic. The resulting time-space changes in shipping noise are studied for four key regions of this pristine environment, for 2013 traffic conditions and a hypothetical tenfold traffic increase. A probabilistic modeling and mapping framework, called Ramdam, which integrates the intrinsic variability and uncertainties of shipping noise and its effects on marine habitats, is developed and applied. A substantial transformation of soundscapes is observed in areas where shipping noise changes from present occasional-transient contributor to a dominant noise source. Examination of impacts on low-frequency mammals within ecologically and biologically significant areas reveals that shipping noise has the potential to trigger behavioral responses and masking in the future, although no risk of temporary or permanent hearing threshold shifts is noted. Such probabilistic modeling and mapping is strategic in marine spatial planning of this emerging noise issues.

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