Automated imaging sonar system for seal deterrence in salmon rivers shows promise
By
Gillespie, Douglas, Harris, Robert N, Sparling, Carol
Baker's choice. Dense with flavour, light on filler.
Summary
This article presents research on an automated system using multibeam imaging sonar to detect and deter seals from entering salmon rivers, addressing the problem of pinniped predation on endangered Atlantic salmon in UK rivers. The system aims to overcome limitations of traditional acoustic deterrent devices (ADDs) by operating only when seals are detected, reducing impacts on non-target wildlife and minimizing seal habituation.
Key quotes
· 3 pulledReducing pinniped predation on salmonid fish in river environments is an important conservation priority in rivers globally.
Acoustic deterrent devices (ADDs) have often been considered a useful tool in preventing seals from entering rivers, but continuous operation raises concerns about impacts on non-target wildlife and the potential for seal habituation.
We developed an automated system that uses multibeam imaging sonar to detect seals and trigger targeted deterrents only when needed.
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