Monitoring of fish stocks in the river Scorff

Monitoring of fish stocks in the river Scorff

On the Scorff, in addition to the monitoring carried out at the trapping stations, various fish population monitoring operations are conducted throughout the river system.

The data from these various monitoring programmes are available in the annual report.

Tacon

Salmon juvenils IA SAT

These indicators (number of juveniles caught per five minutes of fishing) (Prévost et al 1993) have generally been carried out in late September since 1993

See : Salmon juvenils

 
Truite juvénile

Trout juvenils

Since 2007, IAT have generally been carried out in late September using the "Vigitruite®" method (Roussel 2004)

 
lamproies

Lampreys juvenisl

Abondances' lamprey indicators (Lasne 2010) have been compiled in the autumn since 2013

 
Frayére saumon

Counting of spawning grounds

These spawning ground couting (for salmon and/or lamprey) have been carried out since 2007