mcbem-2014-01-submission-wwf-en
mcbem-2014-01-submission-wwf-en
mcbem-2014-01-submission-wwf-en
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Killer whales. © forwhales.org<br />
Acoustic Monitoring<br />
Recomm<strong>en</strong>dation 5: Noise monitoring should be expanded off the coast of BC.<br />
Noise levels should be monitored (using calibrated hydrophone systems) in repres<strong>en</strong>tative areas<br />
coast-wide, recognizing that underwater sound transmission varies with depth, bathymetry, etc.<br />
Underwater noise data or modelled results should be a layer in the spatial data sets used by<br />
planners and managers, and modelled noise levels should be validated with measurem<strong>en</strong>ts.<br />
Ambi<strong>en</strong>t baselines should be established for key areas, based on existing data collected during<br />
various <strong>en</strong>vironm<strong>en</strong>tal assessm<strong>en</strong>ts and multiple research initiatives (DFO, Ocean Initiatives,<br />
port developm<strong>en</strong>ts, etc.).<br />
Noise measuring stations should be linked to the AIS system to monitor source levels from<br />
individual vessels and id<strong>en</strong>tify the noisiest vessels in differ<strong>en</strong>t ship classes. This could be a useful<br />
means of noise reduction around shipping lanes, as noise reduction measures could initially be<br />
targeted at these vessels. Since such noise reduction in part requires improved maint<strong>en</strong>ance,<br />
vessel-specific noise reductions would affect their areas of operation, rather than just being<br />
local in effect (as would be the case with managing through slow-down requirem<strong>en</strong>ts).<br />
Acoustic Quieting and Marine Protected Areas<br />
Recomm<strong>en</strong>dation 6: A quiet<strong>en</strong>ed or quiet area, such as within an existing or proposed MPA in BC,<br />
should be designated in Canada’s Pacific.<br />
The need to establish a framework for determining approaches to id<strong>en</strong>tify areas for quiet<strong>en</strong>ing was<br />
id<strong>en</strong>tified. In g<strong>en</strong>eral, managem<strong>en</strong>t of underwater noise in BC could be framed around the need to<br />
protect critical habitat for one or more whale species on Canada’s Pacific Coast, with SARA-designated<br />
critical habitat (or candidate or proposed habitat) being an initial subset of habitats for consideration for<br />
acoustic protection. Marine protected areas offer promise as an underwater noise solution in some<br />
situations. This tool is not being used to its fullest. A review by Erich Hoyt (this workshop’s keynote<br />
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