In-field Recordings of Adds and Risk-Based Mapping of Potential Impacts to Target and Non-Target Species

The use of Acoustic Deterrent Devices (ADDs) at fish farms to deter seals is common practice in the coastal regions of the west coast of Scotland. This practice aims to reduce stress to farmed fish and damage to nets and livestock. Other non-target species are potentially impacted by this practice, and those of greatest concern are whales, dolphins and porpoises (cetaceans). One key knowledge gap lies in noise level measurements of the devices in the real-world and how the sound emitted from these devices propagate...