An analysis of potential broad-scale impacts on harbour porpoise from proposed pile driving activities in the North Sea
Report of an expert group convened under the Habitats and Wild Birds Directives – Marine Evidence Group
Tougaard, J., Buckland, S., Robinson, S. and Southall, B.
An expert group was commissioned by the Habitats and Wild Birds Directives – Marine Evidence Group (co-ordinated by Defra) to provide an objective, scientific assessment of the potential impacts of planned large-scale offshore wind energy development on marine mammals in the North Sea focused around the following two questions: i. what would be the size of an anthropogenically-caused gap (or gaps) in distribution of harbour porpoises that would cause a population effect? ii. using existing information on the effects of (unmitigated) pile-driving, are there any thresholds (expressed in spatial distribution of pile-driving or other relevant noise generating projects) above which population-scale risks become significant?
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