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Research Document 2017/008

Review of Mitigation Measures for Cetacean Species at Risk During Seismic Survey Operations

By Moors-Murphy, H.B., and J.A. Theriault

Abstract

Mitigation measures are required for seismic survey operations occurring in Canadian waters to reduce potential negative effects on marine mammals. Since 2008, the Statement of Canadian Practice with Respect to the Mitigation of Seismic Sound in the Marine Environment (SOCP) has been used to guide the minimum standard mitigation measures recommended for seismic operations in Canadian waters. The objectives of this paper are to determine if the mitigation measures outlined in the SOCP are likely to avoid Species at Risk Act (SARA)-prohibited impacts on listed cetaceans, to identify potential gaps or issues, and to provide additional or modified mitigation measures that should be considered to further reduce potential impacts. Specific reference to endangered North Atlantic Right Whales (Eubalaena glacialis), Atlantic Blue Whales (Balaenoptera musculus) and Scotian Shelf Northern Bottlenose Whales (Hyperoodon ampullatus) are provided as case studies.

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