Acoustic telemetry
IFI is getting ready to deploy acoustic receivers in River Errif and Killary harbour to track migrating Atlantic salmon smolts.
River Erriff – Getting ready for smolt season
River Erriff – 2019
Acoustic Study
Study type: Acoustic
Listening stations deployed: 13
Tagged smolts: 20
Succeeded: 16
Survival rates (%)
Overall survival = Number of survivors / Total number of released fish * 100
Section survival = Fish that reached the end of the section / Fish that entered the section * 100
Study area
Red dots represent listening stations
Red flags represent release sites
Radio study
Study type: Radio
Listening stations deployed: 4
(complemented with manual tracking)
Tagged smolts: 43
Succeeded: 20
Survival rates (%)
Overall survival = Number of survivors / Total number of released fish * 100
Section survival = Fish that reached the end of the section / Fish that entered the section * 100
Study area
Red dots represent listening stations
Red flags represent release sites
River Erriff – 2018
Accoustic Study
Study type: Acoustic
Listening stations deployed: 13
Tagged smolts: 70 (35 wild & 35 hatchery)
Succeeded: 43 (17 wild & 26 hatchery)
Survival rates (%)
Overall survival = Number of survivors / Total number of released fish * 100 <br> Section survival = Fish that reached the end of the section / Fish that entered the section * 100
Study area
Red dots represent listening stations
Red flags represent release sites
Radio study
Study type: Radio
Listening stations deployed: 4
(complemented with manual tracking)
Tagged smolts: 30
Succeeded: 7
Survival rates (%)
Overall survival = Number of survivors / Total number of released fish * 100 <br> Section survival = Fish that reached the end of the section / Fish that entered the section * 100
Study area
Red dots represent listening stations
Red flags represent release sites
River Erriff – 2017
Study type: Acoustic
Listening stations deployed: 12
Tagged smolts: 40
Succeeded: 12
Survival rates (%)
Overall survival = Number of survivors / Total number of released fish * 100
Section survival = Fish that reached the end of the section / Fish that entered the section * 100
Study area
Red dots represent listening stations
Red flags represent release sites
