EFA: I have visited the station in Buisdorf and I was impressed to see the Salmo salar in central Europen waters.
Can you give your view on the purity of our waters and the trend ? DFP:
Our main problems in freshwater are still:
smolt losses through turbine passage,
and in-river-fisheries in the Rhinedelta area.
We still work on these issues, but it is definitely a task for generations EFA: what is the number of salmon that return each year, is it being increasing
throughout the years ? What was the numbers of salmon in 2010 ? DFP:Since 2000 we monitor about 250 and 550 salmon a year in NRW (North Rhine-Westphalia). Our registration rate is about 50 %. In 2010 we counted around 400.
There is an increasing number since 2000, but this is due to restocking improvements during this period.
We learned what are the most successful restocking strategy is and have more returner by nearly the same (or even less) restocking numbers.